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Research Institute ofElectrical Communication
Tohoku University
2011/2012

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CONTENTS• Chronology……………………………………………1• Organization …………………………………………5• Nation‑wide Cooperative Research Projects …8• Research Fields ……………………………………9• Research Division
Information Devices Division ………………11
Broadband Engineering Division…………17

Human Information Systems Division ……25
Systems & Software Division ………………31
Sponsored Division ……………………………38• Laboratory for Nanoelectronics
and Spintronics …………………………………40• Laboratory for Brainware Systems …………47

IEEE Electrical Engineering Milestone
for Yagi-Uda Antenna• Research Center for 21st Century
Information Technology……………………53• Flexible Information System Research Center …57• Fundamental Technology Center ……………59• Management Office for Safety and Health …60• Research Activities
Study Groups on Electrical Communication …61
Symposiums Organized by the Institute …62
Periodicals Published by the Institute ……64
• Educatonal Activities……………………………65• International Activities …………………………66• RIEC Open Day ……………………………………68• Staff …………………………………………………69

IEEE Electrical Engineering Milestone
for Yagi-Uda Antenna（in Katahira Campus）

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Greeting from the Director

Director Prof.
Masataka NAKAZAWA

③

①

②

① Experimental equipment for Yagi-Uda Antenna（1929）② Experimental equipment for Split Anode Magnetron（1927）③ Experimental equipment for AC-bias magnetic recording（1937）

It would be no exaggeration to say that we owe thecivilization created between the nineteenth and the twenty-first
centuries to the information and communications industry andthe electronics industry. This is represented by suchtechnologies as the telephone, television, personal computer,mobile phone, and the Internet. Moreover, in terms of GDP,
while most of Japan’s industries have been showing little
growth, the information and communications technology (ICT)
sector has continued to expand at an annual rate of about 7
percent.
Tohoku University’s Research Institute of ElectricalCommunication was established in 1935 in affiliation with the
School of Engineering, where pioneering work on informationand communications had already resulted in breakthroughssuch as the Yagi-Uda antenna and the split-anode magnetron.
Well known both by its Japanese abbreviation “Tsuken” andby the acronym RIEC, the Institute has contributed in no small
measure to the progress that has been made on
telecommunications technology over the past 75 years. From
its early work with weak-current electricity, RIEC first becamea leader in the field of electromagnetic and electronic devices.
We have since added transmission, human interface, andsoftware technologies, and today our integrated researchcovers everything from devices to software. Our organizationconsists of four major research divisions (Information Devices,
Broadband Engineering, Human Information Systems, andSystems and Software), two experimental facilities (theLaboratory for Nanoelectronics and Spintronics, and theLaboratory for Brainware Systems), and the Research Centerfor 21st Century Information Technology, or IT21 Center.
The massive disaster that struck the Tohoku region on
March 11 taught those of us concerned with the informationand communications infrastructure some severe lessons. The
fact that the mobile phone service was all but lost and opticalfiber networks were disrupted revealed that an information andcommunications network on the cutting edge of global
technology is vulnerable to a disaster of this magnitude. The
task of building a disaster-resistant network falls naturally to
our Tohoku University Group of Electrical Engineering,
Communication Engineering, Electronic Engineering, andInformation Engineering, whose nearly 80 laboratories make it
Japan’ s largest electronic and computer engineeringcommunity, and our future depends on rising to this challenge.
It is important that we identify real needs by asking people
living in the disaster stricken areas what problems they faced,
and then bring our proposed solutions to the practical stage as
quickly as possible and introduce them in cooperation withlocal authorities in the affected areas, through a partnershipamong academia, industry, and government. I feel sure thatmany innovative technologies will see the light of day as aresult of this work. The challenge that lies ahead will require anationwide response, and we are committed to serve as its
nucleus.
I look forward to your continuing support and encouragement
as we at RIEC forge ahead toward achieving our goals, unitedin our renewed commitment and enthusiasm.

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Chronology
1. Birth
Telecommunications research at Tohoku University began in 1919 with the establishment of the Department
of Electrical Engineering in the university's School of Engineering. In that era, work was centered on strongcurrent electrical engineering, but upon the establishment of this department attention turned to weak-current
electrical engineering.
In 1924, the Saito Foundation granted what in those days was a huge sum to fund research by threeprofessors, Hidetsugu Yagi, Heiichi Nukiyama, and Shigetaro Chiba, into communication methods using
electricity. As a result, telecommunications related research was conducted systematically for the first time inJapan. The department was subsequently strengthened by the addition of a succession of gifted young
researchers such as Yasushi Watanabe, Masatoshi Matsudaira, Kinjiro Okabe, Shintaro Uda, Kenzo Nagai, andKatsuichiro Kobayashi. The fruits of their research were considerable, as reflected by the publication ofnumerous papers in journals both in Japan and overseas that attracted widespread attention.
Along with subsequent advances in telecommunications technologies and the spread of communications
equipment, the importance of telecommunications related research became increasingly recognized, fueling agroundswell of opinion in favor of setting up a research establishment to undertake telecommunications research at
the Tohoku Imperial University. The university's statutes were revised and an affiliated telecommunications
research institute was established. Professor Heiichi Nukiyama was appointed as the first head of the new
institute, and he had a full-time staff comprising three assistant professors, six assistants, and one secretary.
Given its intended evolution into an entity independent of the Department of Electrical Engineering, this research
institute was designed to function in parallel with the School of Engineering, but shared premises with the
Department of Electrical Engineering, and its research facilities were conventional. It maintained an arm's length
relationship with the Department of Electrical Engineering and the number of people who functioned effectively
as regular staff was far larger than the number of regular staff prescribed by its statutes. This strengthened boththe organization and the content of its research, enabling it to produce noteworthy results.

2. Cradle and growth
In response to society’s need for telecommunications engineers, the Department of Electrical Communication
was established within the School of Engineering in 1941. As part of a three-entity cooperative structure that
included the Department of Electrical Engineering and the Department of Electrical Communication, theResearch Institute of Electrical Communication (RIEC) achieved considerable success in a diverse range of
research projects and produced a large number of skilled personnel through its research and education
activities. In this way, it steadily built up a tradition of combined operations.
As a result of a statutory change, in 1944, RIEC, hitherto a telecommunications research institute affiliatedwith Tohoku University, was given the status of an integral research institute. It had an independent research
institute structure comprising five divisions staffed by full-time professors, but firmly retained a system of close
links with the Department of Electrical Engineering and with communications engineering.
During the difficult circumstances of the postwar period, work continued in the research facilities, which had
narrowly escaped wartime destruction. As a result of the promulgation of the National School Establishment Act
in 1949, Tohoku University was re-established with the status of a national university, and RIEC became one of
its integral research institutes.

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Owing to the subsequent rapid progress made in the field of electronics, there were successive increases in
the number of research divisions with the addition of one in 1954 and 1957, four in 1961, three in 1962 and
1963, and one in each of 1965, 1969, and 1976. This saw RIEC develop into a major research institute with 20
research divisions and some 100 teaching staff.
The year 1956 saw the completion of the institute's first independent building (currently part of the Institute ofMultidisciplinary Research for Advanced Materials) on the Katahira Campus, formerly in the Sakurakoji district of
Sendai. The end of March 1963 saw the completion of a new building (currently S Block No. 1 Building) that was
double the size of its predecessor on the Katahira Campus formerly in the Minami Rokken-cho district, marking
the beginning of a move from the Sakurakoji district to the Minami Rokken-cho district. When the School ofEngineering transferred to Aobayama in 1966, the former Department of Electronic Engineering building(currently N Block, No. 1 Building) became an RIEC building, as did the building (currently No. 2 Building) of theTraining School of Engineering Teachers upon its closure in 1969. This completed the transfer of all thedivisions.
The Laboratory for Microelectronics (operating for a limited period until March 1994) was established in 1984,
and the Super Clean Room block was completed in 1986. The Laboratory for Electronic Intelligent Systems wasestablished in April 1994 as an advanced version of the Laboratory for Microelectronics.
In 1958 the electricity related departments of the School of Engineering, with which RIEC was closely
associated, were supplemented by the addition of the Department of Electronic Engineering. Subsequent
milestones included the establishment of the Research Center for Applied Information Science in 1972 andincreases in the number of information engineering majors in the Graduate School of Engineering in 1973 and in
the information engineering departments in the School of Engineering in 1984. With this as a basis, theGraduate School of Information Sciences was newly established in 1993.
With greater emphasis being placed on graduate schools, in 1994 the electrical, communication science, andelectronic engineering majors in the Graduate School of Engineering became electrical and communicationengineering and electronic engineering majors. With greater emphasis being placed on graduate schools, in1994 the courses in electrical, communication science, and electronic engineering in the Graduate School ofEngineering were replaced with courses in electrical and communication engineering and electronic engineering.
A total of nine courses were instituted, including full-time courses. In addition, four electricity related departments
and the Department of Applied Physics were amalgamated in 2007 to form the Department of Information andIntelligent Systems. In addition, 2008 saw the establishment of Japan's first Department of Biomedical
Engineering, with the aim of fusing medicine and engineering with active input from the electrical field.

3. Development: From national collaborative research institute to joint
usage/research centerIn 1995 RIEC celebrated the 60th anniversary of its establishment. To mark the occasion it sought to meet theneeds of the impending advanced information society by reorganizing itself as a national collaborative research
institute. In June 1994, approval was given for RIEC to become a national collaborative research instituteengaging in both theoretical and applied research relating to high-density and advanced information
communications, whereupon it reorganized into three broad research divisions: Brain Computing, Materials
Science and Devices, and Coherent Wave Engineering. In addition, to replace the Laboratory for

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Microelectronics, which had reached its specified duration, the Laboratory for Electronic Intelligent Systems wasestablished across the three divisions.
The backdrop to this was the IT revolution, characterized by rapid progress in information and communication
technologies, which made the information society a reality. To ensure that RIEC played a leading role in theinformation society, in 2001 its philosophy, objectives, and goals were reformulated.
RIEC has defined its philosophy as follows: "Close and smooth communication between people isfundamental to maintaining and developing a flourishing and humane society. We will contribute to the wellbeing not only of Japan but also of human society as a whole through the rapid development of science andtechnology related to communication." In addition, RIEC pledged that, based on the results of research
conducted hitherto in relation to high-density and advanced information communications, it would play a pivotal
role in undertaking comprehensive research into the theory and application of science and technology that will
provide communication approaches that benefit humankind.
Also, in April 2002, RIEC established the Research Center for 21st Century Information Technology incompliance with a ministerial ordinance. Straddling the three research divisions, the center's aim is to address,
through collaborations between industry and academia, the changes that occur in the fabric of society, leading to
the creation of new information and communication industries.
In 2009, major changes were made to the organization of university research institutes and centers; the national
collaborative research institutes were abolished, and joint usage/research centers were established. A council
for joint usage/research centers was set up in April 2010. These centers involve not only the joint use of facilities
but also the conduct of joint research; something that is strongly desired by the research community.
At the time of the change to a collaborative research institute in 1994, RIEC's intention was to operate with its
orientation towards joint research, gathering research scientists together from a broad range of backgrounds
both within Japan and overseas, and pursuing joint research projects. In this regard, RIEC anticipated the main
goal of these new centers. In recognition of its achievements, RIEC has been accredited as a joint
usage/research center.

4. Leap forward: As a world center of excellence
To realize RIEC's philosophy and goals in the coming era of next-generation global, ubiquitous information
communication, an appropriate research system has been put in place. In fiscal 2004 a reorganization wasundertaken that considered the research time scale, in addition to the research fields themselves. Research was
divided broadly into short-, medium-, and long-term research, and we introduced flexibility to enable theorganization to be changed fluidly according to the progress of the research. A major role in short-term researchis played by the Research Center for 21st Century Information Technology, which facilitates the practicalapplication of the excellent research results achieved by RIEC within approximately five years throughcollaboration between industry and academia. We have also set up a Laboratory for Nanoelectronics andSpintronics to engage in research over medium-term spans of approximately 10 years. It undertakes
comprehensive and intensive research into material and device technologies based on nanotechnology. We
have also established the Laboratory for Brainware Systems, whose aim is to build intelligent integrated systems
that break down the barriers of present-day information technologies, conducting fundamental research with a

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欧文2011̲本文̲2011‐2012 11/09/17 16:00 ページ 4view to practical applications. To promote research at the Laboratory for Nanoelectronics and Spintronics, inMarch 2004 we completed the Nanoelectronics and Spintronics integrated research block, which is equippedwith the latest technology.
Long-term research has been reorganized into four major research divisions. The Materials Science andDevices Division and the Coherent Wave Engineering Division, which developed scientific techniques fortransmitting large volumes of information accurately at high speed, are both in fields in which RIEC has
traditionally been strong. These units have been reorganized into the Information Devices Division and theBroadband Engineering Division, respectively. Moreover, to build an advanced information society in whichhumankind and the environment are in harmony, we have established the Human Information Systems Division,
which aims to elucidate the ways in which human beings process information, and the Systems and Software
Division, whose goal is to develop software and systems to advance and enhance the information andcommunication systems that underpin the information society.
RIEC has structures for close cooperation in the spheres of research and education with the School ofEngineering (Electrical and Communication Engineering, Electronic Engineering), the Graduate School ofInformation Sciences, and the Graduate School of Biomedical Engineering. At the same time it welcomes
researchers from within Japan and from all over the world, and as a world center of excellence its duty is toengage vigorously in research activities in a wide range of fields related to telecommunications. Building on the
proud record of achievement of our distinguished predecessors and colleagues, we are entering a new era inwhich we hope to make further leaps forward amid the rapid development of information and communication
technologies and the rising tide of globalization.

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Organization
1.Organization Chart
Information Devices Division
Director

Advisory
Council
DeputyDirector

Broadband Engineering Division

Research
Divisions
Human Information Systems Division
FacultyCouncil
Systems & Software Division

Sponsored Division
Laboratory for Nanoelectronics and Spintronics

Research
Facilities

Laboratory for Brainware Systems

Research Center for 21st Century
Information Technology
Management Office for Safety and HealthCommon Research Facilities

Flexible Information System Research Center
Fundamental Technology Center

Administration Office

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Nano‑Photoelectronics
Quantum‑Optical Information Technology
Solid State Electronics
Dielectric Nano‑Devices
Materials Functionality Design
Magnetic Devices(Visitor Section)
Ultrahigh‑Speed Optical Communication
Applied Quantum Optics
Advanced Wireless Information Technology
Information Storage Systems
Ultra‑Broadband Signal Processing
Basic Technology for Broadband Communication(Visitor Section)
Electromagnetic Bioinformation Engineering
Advanced Acoustic Information Systems
Visual Cognition and Systems
Ubiquitous Communications System
Multimodal Computing (Visitor Section)
Software Construction
Computing Information Theory
Communication Network
Information Contents
Information Social Structure(Visitor Section)
Environmental‑Adaptive Information and Communication Engineering
Atomically Controlled Processing
Semiconductor Spintronics
Nano‑Molecular Devices
Nano‑Spin Memory
Real‑World ComputingIntelligent Nano‑Integration System
Microarchitecture
New Paradigm VLSI System
Project Planning Division
Technology Development Division:
Mobile Wireless Technology Group
Storage Technology GroupIntelligence Archive Group(Visitor Section)

Machine Shop Division
Evaluation Division
Process Division
Software Technology Division
General Affairs Section
Cooperative Research Section
Library Section
Accounting Section
Purchasing Section

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2.Staff(2011.7.1)

Classification

Laboratory for Laboratory for
Nanoelectronics Brainware
and Spintronics Systems

Division

Professors
Associate Professors
Assistant Professors
Research Fellows
Technical Officials
Administrative Officials
Total

19
13
18
13

3
5
3
4

ResearchCenter for21st Century
Information
Technology

4
1
6
2

Fundamental
Technology
CenterAdministration
Office
Total

1
1

15
63

15

13

2

15

2
13
15

27
20
27
19
17
13
123

3.Land and Buildings
Site:
Total building area:
Total floor area:
Name of Buildings
Building No.1

Katahira 2-1-1, Aoba-ku, Sendai 980-8577, Japan
12,913m2
28,776m2
Structure
Reinforced Concrete, 4 floors

Building No.2
Reinforced Concrete, 4 floors
Laboratory for Nanoelectronics and Spintronics Steel-frame, 5 floors
Reinforced Concrete, 1 floor
Laboratory for
Brainware Systems
Reinforced Concrete(partly steel-frame), 2 floors
Steel-frame 1 floor
Light-weight steel-frame, 2 floors
Research Center for 21st Century Reinforced Concrete, 3 floors
Information Technology
Steel-frame 1 floor
Evaluation and Analysis Center Reinforced Concrete, 2 floors
Helium Sub-Center
Reinforced Concrete(partly light-weight steel-frame),1 floor
Machine Shop
Reinforced Concrete(partly light-weight steel-frame),1 floor
OthersTotal(2011.7.1)

Year of Completion Floor Area
Building-S:1962,1963
7,772m2
Building-N:1959,1960
1962,1963
7,085m2
2004
7,375m2
1967,1968,1972
525m2
1986
1,553m2
1996
598m2
1999
147m2
1930
1,343m2
2002
435m2
1981
790m2
1972
166m2
1965,1966,1978
479m2
508m2
28,776m2

4.BudgetFinancial Year

2006
2007
2008
2009
2010

7 RIEC2011/2012(Unit:1,000Yen)

Personnel
Expenditure

Supplies
Expenditure

971,482
970,961
879,481
1,026,511
777,776

927,090813,724
953,000
1,562,318
735,496

Research Grant
Partnership Between
Ministry of Education,
Universities and Industry
Science and Culture
599,040
937,441
700,615
888,833
694,883
1,069,832
605,100
798,053
418,680
962,712

Total

3,435,053
3,374,133
3,597,196
3,991,982
2,894,664

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Nation-wide Cooperative Research
Projects

The Institute has a long history of fundamental contributions in many fields of engineering and science that include
the fields of semiconductor materials and devices, magnetic recording, optical communication, electromagnetic
technology, applications of ultrasonics, acoustic communication, non-linear physics and engineering, and computer
software. On the basis of this rich historical background the Institute was designated as National Center for
Cooperative Research in 1994. Accompanying Tohoku University’s transformation to “ a national university juridical
entity” in April, 2004, this institution plays a leading role on the world stage, as its researchers, both domestic andforeign, continue the task of “investigating the theory and application of universal science and technology to realize
communication, to the enrichment of humanity.”
In such background, the Institute organizes Nation-wide Cooperative Research Projects by coordinating its activities
with research workers. The main themes for Cooperative Research are selected annually by the Committee for
Cooperative Research. Then invitations for project proposals and participation are extended to university faculties andgovernment laboratories as well as industrial research groups. Each project approved by the Faculty Council of theInstitute is carried out by a team of researchers that include members of the Institute as well as outside participants.
The Advisory Council which includes members from other institutions has an advisory function to the Director in
defining the general direction of the research at the Institute and its Nation-wide Cooperative Research Projects.
The Project Judging Committee that includes members from the outside of Tohoku University has a judging function
for project proposals.The purpose of the Project Steering Committee is the proper operation of approved projects.

Director

Advisory
Council

Outline of the Operation Policy

Cooperative Projects
Study Committee

Cooperative Projects
Selection Committee
Cooperative Projects
Steering Committee

Type AAct as a planning center for all
operations in cooperative projects
research

Type B
Rating of applications
Adoption decision

Type S
Budget allocation
Daily routine business

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Research Fields
The Research Institute of Electrical Communication (RIEC) maintains a close cooperative relationship with the
Graduate Schools of Engineering, Information Sciences and Biomedical Engineering in its research and educational
activities, especially with the Departments of Electrical and Communication Engineering, Electronics, Computer andMathematical Science, System Information Science and Applied Information Sciences. This cooperation enriches theresearch activities of RIEC as a “Joint Usage / Research Center.” The research fields of four divisions are:(1)Information Devices Division:Advanced Nano-Information Devices Utilizing Physical Phenomena(2)Broadband Engineering Division:Next Generation Systems for Ultra-Broadband Communication(3)Human Information Systems Division:Creation of Information Systems Harmonizing People and Environments(4)Systems & Software Division:Advanced System and Software for Information Society

Information Devices Division

Broadband Engineering Division

Materials Science and Device Science

Information Technology

・ Solid State Electronics
・ Dielectric Nano‑Devices
・ Materials Functionality Design
・ Atomically Controlled Processing
・ Physical Fluctuomatics *・ Intelligent Integrated Systems *・ Advanced Management of Integrated System Technology *・ Solid State Electronics *・ Physical Acoustics *・ Advanced Wireless Information Technology
・ Technology Development Division Mobile Wireless Technology Group・ Ultrasonic Micro‑Spectroscopy *Ultrahigh‑Frequency Engineering
・ Ultra‑Broadband Signal Processing
・ Communication Engineering *Optical Communication／Applied Quantum Electronics
Electonic and Optical Quantum Science・ Nano‑Photoelectronics
・ Quantum‑Optical Information Technology
・ Biomodeling *・ Ultrahigh‑Speed Optical Communication
・ Applied Quantum Optics
・ Optical Physics Engineering *・ Neural Electronic Engineering *・ Information Measurement and processing *Information Recording ／ Material Science
Plasma Science・ Electromagnetic Theory *・ Magneto‑Plasma‑Dynamic Engineering *Visitor Section
・ Magnetic Devices

・ Semiconductor Spintronics
・ Information Storage Systems
・ Technology Development Division Storage Technology Group・ Nano‑Spin Memory
・ Microelectronics *・ Electronic Physics Engineering *・ Algorithm Theory *・ Nanoscale Magnetism and devices *・ Medical Nanosystem Engineering *・ Spin Electronics *・ Magnetic Materials *・ Nano Intelligent System *Visitor Section
・ Basic Technology for Broadband Communication

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Human Information Systems Division

Systems & Software Division

Bioinformation

Computer Science・ Electromagnetic Bioinformation Engineering・ Electromagnetic Theory *・ Applied Power Systems Engineering *Human Information Processing
・ Advanced Acoustic Information Systems
・ Visial Cognition and Systems
・ Intelligent Communication Network *・ Electronic Control Systems *・ Advanced Information Technology *・ Electronic Control Engineering *Communication Environment
・ Ubiqutous Communication Systems
・ Electromagnetic Wave Engineering *・ Software Construction
・ Computing Information Theory
・ Foundations of Software Science *・ Intelligent Systems Science *・ Information Security *・ Image Information Communications *Internet Communication
・ Communication Network
・ Information Contents
・ Information Network System *・ Information Technology *・ Electric Energy System Engineering *・ Applied Intelligence Software *・ Communication Science *・ Creation Understanding and Distribution
Technology for Digital Content *Bioelectronics
・ Nano‑Molecular Divices
・ Basic Plasma Engineering *・ Biomedical Electronics *・ Nano‑Biomedical Engineering *・ Systems Bioinformatics *Real World Computing

VLSI System
・ Intelligent Nano‑Integration System
・ New Paradigm VLSI System
・ Microarchitecture
・ Intelligent Electronic Circuits *・ Power Electronics *・ Computer Structures *・ Real‑World Computing
・ Bio‑electromagnetics *Visitor Section

Visitor Section
・ Information Social Structure

・ Multimodal Computing*Laboratories in Graduate Schools

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Materials Functionality
DesignQuantum‑Optical
Information Technology

Nano‑Photoelectronics

Information Devices
Division

Solid State Electronics
Dielectric
Nano‑Devices

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Nano‑photoelectronics
Staff:
Yoichi UEHARA, Professor
Satoshi KATANO, Assistant Professor
S. KATANO

Y. UEHARA

Research activities:
Our main interest lies in studying the physical and chemical phenomena that take place in nanometerscale regions and their applications in nanophotoelectronic devices. Development of novel probing
methods is also targeted.

Nono-photoelectronics (Prof. UEHARA)
The material properties of individual nanostructures are investigated through their optical responses to the local excitationinduced by electron tunneling in a scanning probe microscope (SPM). In this method, unlike conventional electricmeasurements, attainable temporal resolution is not limited by the signal levels. Hence, the material properties are exploredwith high spatial and temporal resolution. Efficient excitation of light confined in nanostructures is possible in the spectral
range from THz to PHz by electron tunneling. This confined light is efficiently converted to free (i.e., propagating) light by thepresence of the tip. By utilizing such properties, one can realize efficient and broad-band optical sources and detectors.

Research topics:
1. Investigation of material properties of individual solid nano-structures, e.g., determination of life times of phonons confinedin nanostructures.
2. Investigation of material properties of individual surface adsorbed molecules, e.g., vibrational spectroscopy of individual
single molecules.
3. Investigation of various electromagnetic phenomena in nanometer-scale spaces, and their applications to engineering.
4. Development of efficient and broad-band optical sources and detectors.

Integrated Surface Analysis
System with Low‑temperature
STM

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Quantum‑Optical
Information Technology
Staff:
Keiichi EDAMATSU, Professor
Hideo KOSAKA, Associate Professor
Yasuyoshi MITSUMORI, Associate professor

H. KOSAKA

K. EDAMATSU Y. MITSUMORI

Research activities:
Current information and communication technology utilizes macroscopic and classical physicalquantities, such as voltage or frequency of electric fields. The classical technology will reach the limit of
information density and speed in the near future. The quantum-mechanical counterpart, “quantum
information processing and communication technology”, in which information is carried by microscopic andquantum-mechanical quantities, is expected to overcome the difficulty. Our goal is to develop the quantum
information devices utilizing quantum interaction between electrons and photons in semiconductor
nanostructures, to obtain further understanding of their physics, and to apply them to practical quantum
information technologies.

Quantum-Optical Information Technology (Prof. EDAMATSU)
Development of fundamental devices of quantum info-communication technology (QICT) utilizing photons, novel materials
and semiconductor nanostructures.

Research topics:
1. Novel techniques for the generation and detection of photon entanglement.
2. QICT devices using optical fibers, waveguides, and semiconductor nanostructures.

Quantum Solid State Physics (Assoc. Prof. KOSAKA)
Development of quantum interfaces essential for QICT based on particle-wave duality of a quantum through the deep
understanding of interaction between electrons and photons.

Research topics:
3. Quantum media conversion between a photon and an electron spin and its entanglement-based application.
4. Development of quantum repeaters with an electron spin and nuclear spins in quantum dots and diamonds.

Quantum Laser Spectroscopy (Assoc. Prof. MITSUMORI)
Development of optical manipulation technique of electrons in semiconductor quantum structures for the realization of
QICT.

Research topics:
5. Coherent optical control of an electron in a semiconductor quantum dot.
6. Quantum optics of semiconductor microcavities.

Fig. 1 Single‑photon‑level optical nonlinearity in optical fibers andwaveguides.
Fig. 2 Quantum media conversion from photon
polarization to an electron spin.

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Solid State Electronics
Staff:
Maki SUEMITSU, Professor
Hirokazu FUKIDOME, Assistant Professor
Hiroyuki KAGESHIMA, Visiting Professor H. KAGESHIMA
Sergey FILIMONOV, Visiting Associate Professor

M. SUEMITSU

H. FUKIDOME
S. FILIMONOV

Research activities:
To realize the ubiquitous (or the ambient intelligence) society, in which sensors and their networks areembedded in our ambience to support our daily life through prompt warnings of various environmental
crises, a marriage between non-Si technologies suitable for environmental sensing and the Si technology
suitable for signal processing is indispensable. To this goal, we investigate formation of ultrathin siliconcarbide (SiC) films on Si substrates, hoping to use them as a common interface between the twotechnologies. We have especially succeeded in the formation of epitaxial graphene on Si substrates for the
first time via graphitization of an ultrathin SiC/Si layer, thereby leading the world in this area.

Solid-State Electronics (Prof. SUEMITSU)
SiC is a compound semiconductor that contains a pair of group-IV elements that represents conventional (Si) and bio- andnanocarbon-based (C) electronics. It also bridges the gap between Si and other II-VI or III-V compounds. SiC is a widegap
semiconductor that enables high-temperature operations. High enough strength and hardness of SiC make this material
suitable for use in MEMS structures. We are investigating growth of SiC ultrathin film on Si substrates, by developing asingle-precursor-based gas-source molecular-beam epitaxy. The research covers from clarifying the growth kinetics tofabrication of electronic devices based on the structure.
By simply annealing the SiC/Si ultrathin film in ultrahigh vacuum, we can epitaxially grow a few layers of graphene on topof the Si substrate. Graphene is a two-dimensional honeycomb network of C atoms, in which electrons and holes can run ata speed that is ~100 times higher than that in Si. This is why graphene is called a dream material. Our research includes
clarifying and controlling the surface chemistry needed to fabricate the nanostructures on Si and SiC surfaces, which are all
integrated into fabrication of qualified graphene on silicon substrates. We are developing electronic devices centered onhigh-speed devices using this graphene-on-silicon technology.

Research topics:
1. Surface chemistry during formation of SiC films on Si substrates
2. Surface chemistry during the graphene-on-Si process
3. High-speed devices based on the graphene-on-Si structure
4. Material processing using normal-pressure plasma-enhanced chemical vapor deposition

The world‑first graphene‑on‑silicon technology

Graphene: A two‑dimensional networkof carbon atoms

A UHV‑compatible process/analyses
system and the STM image of a Si surface(inset).

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欧文2011̲本文̲2011‐2012 11/09/17 16:00 ページ 15

Dielectric
Nano‑Devices
Staff:
Yasuo CHO, Professor
Yoshiomi HIRANAGA, Assistant Professor
Kohei YAMASUE, Assistant Professor
Yasuo WAGATSUMA, Technical Official

Y. WAGATSUMA
K. YAMASUE
Y. CHO

Y. HIRANAGA

Research activities:
The aim and target of the dielectric nano-devices laboratory are developing the research on the dielectricmeasurement of electronic materials using nano-technologies and applying its fruits to high-performancenext generation electronic devices. It is also very important aim of our laboratory to bring up leaders of thenext generation by cultivating young researchers and students through the research activities.

Dielectric Nano-Devices (Prof. CHO)
Our main area of interest is evaluation and development of dielectric materials, including ferroelectric and piezoelectricmaterials and their application to communication devices and ferroelectric data storage systems.
Our measure contributions to advancement in these fields are the invention and the development of "Scanning Nonlinear
Dielectric Microscope" (SNDM) which is the first successful purely electrical method for observing the ferroelectric
polarization distribution without the influence of the shielding effect by free charges and it has already been put into practicaluse. The resolution of the microscope has been improved up to atomic scale-order. Therefore, it has a great potential for
realizing the ultra-high density ferroelectric recording system. Our recent research achieved to fabricate an ultra-small
domain inversion dot, which has the diameter of 3 nm in case of single dot fabrication, and achieved the recording density of
4 Tbit/inch2 in actual information storage, requiring an abundance of bits to be packed together.(Fig.3)
Moreover, we have started to make a measurement and an evaluation of flash-memory device and dopant profile insemiconductor devices using SNDM. Because SNDM can detect very small capacitance variation, it can be a very powerfulevaluation tool for various materials. Now SNDM evolves into a new evaluation technique for insulator material andsemiconductor materials besides ferroelectric materials.

Research topics:
1. Development of scanning nonlinear dielectric microscope (SNDM) with super high (atomic-scale) resolution.
2. Ultra-high density ferroelectric recording system using SNDM.
3. Development of ferroelectric functional devices for electrical communications using nano-domain engineering based on
SNDM.
4. Evaluation of ferroelectric material and piezoelectric material using SNDM.
5. Evaluation of flash-memory device and dopant profile in semiconductor devices using SNDM

Commercially available scanning
nonlinear dielectric microscope.

15 RIEC2011/2012

S(111) 7X7 atomic structure taken by SNDM.
(a)Topography (b) Electric dipole‑moment.

Example of a ferroelectric actual information
storage (4 Tbit/inch2).

欧文2011̲本文̲2011‐2012 11/09/17 16:00 ページ 16

Materials Functionality
DesignStaff:
Masafumi SHIRAI, Professor
Yoshio MIURA, Assistant Professor
Kazutaka ABE, Assistant Professor
Masahito TSUJIKAWA, Research Fellow

K. ABE Y. MIURA M. SHIRAI M. TSUJIKAWA

Research activities:
Various kinds of materials, such as semiconductors, dielectrics, and magnets, are utilized forprocessing, communication, and storage of massive data in the modern information-oriented society. Our
research objectives are as follows: (1) theoretical analyses of quantum phenomena which appear inmaterials and nanostructures for advanced information devices, (2) computational design of materials andnanostructures which possess new functionalities for improvement of device performance, and (3)development of epoch-making materials and functionality design procedures on the basis of large-scalecomputational simulation techniques.

Materials Functionality Design (Prof. Shirai)
Our research interest is focused on “spintronics”, an interdisciplinary research field emerging from materials science,physics, electronics, and magnetics, where both charge and spin degrees of freedom are exploited to realize new kinds ofadvanced information devices. The main research topics are computational design of new spin-related functionalities
exhibited in the highly spin-polarized materials and device-structures utilized the materials. Recently, we focus our research
objectives on the computational design of efficient spin sources for injecting spin-polarized currents into non-magnetic
metals and semiconductors.
We successfully proposed the hetero-junctions which preserve high spin polarization even at the interfaces between half
metals and non-magnetic materials [Y. Miura, et al., Phys. Rev. B 78, 064416 (2008)]. We elucidated the effects of atomic
disorder and/or thermal fluctuation of spin configurations on spin-dependent transport properties.

Research topics:
1. Computational design of new spintronics materials from first-principles
2. Computational analysis of transport properties in spintronics devices
3. Computational simulation of nanostructure-growth process on surface
4. Development of computational scheme for material/device design

Co2MnSi/(Co2CrAl)1/MgO(001) interface (CrAl-termination)(MnSi-termination)

0.5

Majority-spin

0.4
0.3

Co
Mn

0.2
0.1

Si

0.0

Mg

-0.1

O

-0.2
-0.3
-0.4

Minority-spin

-0.5
-15

-10

-5

0

5

distance from interface [angstrom]

10

Local DOS at EF [states/eV/atom]

Local DOS at EF [states/eV/atom]

Co2MnSi/MgO(001) interface

0.8

Co

Majority-spin

0.6

Mn

0.4
0.2

Cr

0.0

Si

-0.2

Al

-0.4

Mg

-0.6

Minority-spin

O

-0.8
-15

-10

-5

0

5

10

distance from interface [angstrom]

We theoretically proposed that a highly spin‑ polarized interface can be realized by inserting athin Co2CrAl layer (right panel) into a Co2MnSi/MgO (001) junction (left panel).

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欧文2011̲本文̲2011‐2012 11/09/17 16:00 ページ 17

Ultrahigh‑Speed OpticalCommunication

Broadband
Engineering Division
Wireless Info Tech

AppliedQuantum Optics

17 RIEC2011/2012

欧文2011̲本文̲2011‐2012 11/09/17 16:01 ページ 18

Information Storage
Systems

Ultra‑Broadband Signal
Processing

Basic Technology for
Broadband Communication(Visitor Section)

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欧文2011̲本文̲2011‐2012 11/09/17 16:01 ページ 19

Ultrahigh‑Speed OpticalCommunication
Staff:
Masataka NAKAZAWA, Professor
Toshihiko HIROOKA, Associate Professor
Masato YOSHIDA, Associate Professor
Keisuke KASAI, Research Fellow

T. HIROOKA M. NAKAZAWA M. YOSHIDA K. KASAI

Research activities:
With the vast growth of traffic on the Internet from simple text data to high quality voice, image, and real-time video content, it has
become increasingly important to realize an ultrafast, high-capacity network to support the daily needs of modern communications.
Ultrahigh-speed optical communication is the key technology for building such an interconnected world. This laboratory aims torealize a global ultrahigh-speed optical network by engaging in research on ultrashort pulse generation and transmission. Our
research areas include optical solitons, high-speed mode-locked lasers, optical signal processing, and the development of fibers
with new functions.

Optical Transmission (Prof. NAKAZAWA)
Ultrahigh-speed optical transmission is the driving force behind attempts to realize advanced high-speed networks that support ultrahighprecision image transmission or ultra-realistic communication. At the same time, there is a strong need to realize spectrally efficient opticaltransmission to expand the transmission capacity for a given optical bandwidth. With a view to achieving an ultrahigh bit rate exceeding 1
Tbit/s/channel, we are actively engaged in realizing ultrafast optical time division multiplexed (OTDM) transmission using ultrashort pulse
lasers. To expand the spectral density, we are working intensively on ultra-multi-level coherent QAM transmission technology in which thespectral efficiency is greatly improved by encoding the information in both the amplitude and phase of an optical beam. Another important
aspect of our research relates to the development of photonic crystal fibers. These special fibers have many air holes in the fiber crosssection, and they have potential applications in new optical communication systems operating in the currently unused 500-1000 nm band.

Research topics:

1. Terabit/s OTDM transmission using a femtosecond pulse train
2. Ultra-multi-level coherent optical transmission toward the Shannon limit
3. Photonic crystal fibers and optical fibers with new functionality

Optical Signal Processing (Assoc. Prof. HIROOKA)
We are engaged in the development of all-optical technologies using nonlinear optical effects by taking advantage of ultrafast opticalproperties, where optical signals are processed without the need to convert them into the electrical domain. Specifically, we are developing
femtosecond pulse compression, pulse shaping, optical demultiplexing, and distortion elimination techniques, which are indispensable forrealizing ultrahigh-speed OTDM transmission exceeding terabit/s.

Research topics:

4. Distortion elimination technique using time-domain optical Fourier transformation
5. All-optical signal processing using nonlinear optical effects and their application to ultrahigh-speed OTDM transmission

High Accuracy Measurements using Optical Fibers (Assoc.Prof. YOSHIDA)
We are engaged in the development of frequency stabilized laser operated at 1.55 µm and its application to high accuracy measurements
using optical fibers. Furthermore, we are developing ultra-short pulse lasers.

Research topics:

6. Frequency stabilized lasers and their application to high accuracy measurements using optical fibers
7. Ultrashort mode-locked lasers and their application to frequency standards and microwave-photonics

Experiment on ultrahigh‑speed opticaltransmission

19 RIEC2011/2012

Photonic crystal fiber(Left photo:cleaved end face of a PCF)

(Right photo:enlarged cross section)

欧文2011̲本文̲2011‐2012 11/09/17 16:01 ページ 20

Applied Quantum
OpticsStaff:
Hiroshi YASAKA, Professor
H. YASAKA

Research activities:
Internet traffic has been increasing explosively and the amount of information which should beprocessed has been increasing. The capacity of information processing in optical communication systems
should be increased drastically to cope with the explosive increase in the information traffic. It isnecessary to realize ultra-high speed and highly functional semiconductor photonic devices andsemiconductor photonic integrated circuits to construct next generation highly functional opticalinformation communication network systems.
We are investigating novel, highly functional semiconductor photonic devices, which is indispensable torealize new generation optical information communication network systems. Furthermore, our researchinterests cover ultrafast photonic devices, opto-electronic semiconductor devices and their applications to
optical computing and signal processing areas.

Highly Functional Photonics (Prof. YASAKA)
It is indispensable to establish highly functional light source and photonic device technologies and novel functional
semiconductor photonic integrated circuit technology for realizing highly functional optical communication systems and novel
functional optical signal processing systems. We have been studying highly functional semiconductor photonic devices andsemiconductor photonic integrated circuits based on semiconductor lasers and semiconductor optical modulators to create
novel semiconductor photonic devices, which can control intensity, phase, frequency and polarization of optical signal freely.
Furthermore we research novel semiconductor photonic functional devices based on novel principle to realize innovative
photonic information communication network systems.

Research topics:
1. Ultra-high speed control of semiconductor photonic devices by signal light injection
2. Highly functional semiconductor light sourcesశ䊐䉜䉟䊋㩷
3. Highly functional semiconductor optical modulatorsⵍ೙ᓮඨዉ૕శᯏ⢻⚛ሶ೙ᓮశ⊒↢䊂䊋䉟䉴㩷
4. Novel functional semiconductor photonic integrated circuitsDC㔚ᵹTE outOptical Fiber

Semiconductor
Photonic Functional Device

Control Photonic Device

TM inExperimental setup for high‑speed operation offunctional semiconductor photonic devices byexternal optical signal injection.

Magnified photo of a functional
semiconductor photonic device.

Measured and calculated response offunctional semiconductor photonic device.

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欧文2011̲本文̲2011‐2012 11/09/17 16:01 ページ 21

Advanced WirelessInformation Technology
Staff:Noriharu SUEMATSU, Professor
Suguru KAMEDA, Assistant Professor
Shoichi TANIFUJI, Research Fellow

S. TANIFUJI

N. SUEMATSU

S. KAMEDA

Research activities:
Wireless communication systems, such as cellular phones, have offered mobile voice/mail services tous. Nowadays, they begin to offer mobile internet services which handle high capacity photo/motion data.
In order to enjoy freedom from wired lines, small size, light weight, long battery life terminals have beenrequired. For the next generation wireless systems, dependable connectivity and green wirelessinformation technologies (IT) will be the key issues.

Advanced Wireless Information Technology (Prof. SUEMATSU)
Toward the realization of a ubiquitous and broad-band wireless network, we are actively engaged in the research work on
dependable and low power consumption advanced wireless IT. We cover the whole technical fields from the lower to higher
layers, i.e., signal processing, RF/Mixed signal device, antenna, MODEM and network technologies.
As the studies on signal processing, RF/Mixed signal device and antenna technologies, we are developing RF/Millimeterwave RF CMOS IC’s, antenna integrated 3-dimensional system in package (SiP) transceiver modules, digital/RF mixed
signal IC’s.
As the studies on MODEM and network technologies, we are focusing on next generation mobile broadband wirelessaccess (MBWA; mobile broadband wireless access), dependable broadband wireless local area network (WLAN) and ultrabroadband wireless personal area network (W-PAN).
We are also working for the next generation wireless communication systems/devices which include a location / shortmessage communication system via quasi-zenith satellites (QZS) and a fusion of various wireless communication systems“dependable wireless system.”Research topics:
1. Mobile broadband wireless access network
2. Broadband wireless on-chip transceivers
3. Digitally assisted RF analog circuits
4. Millimeter-wave/submillimeter-wave IC's
5. Low Power Digital RF circuits

Satellite
Network
High-Speed Optical Network

6. Heterogeneous mobile network
7. Digital signal processing for broadband wirelesscommunication
8. Location/Message Communication Service via QZS
9. Dependable wireless system

Radio wave
(UHF/microwave/
mm-wave)

CMOS RF-IC䋬mm-wave
RF-IC mm-wave CMOS-IC

Internet
Cellular and MBWA
Base Station

Terrestrial
Digital TV

HPA

Tx Mixer
FilterFilterTx/Rx
SwitchPLL

ControlsignalSynthesizer

LNA
Home
Gateway

FilterFilterte
Rx Mixer

Home
Network
ASV (advance safety vehicle) with DWS

Fig.1 Evolutional network for ubiquitousness and broadband

21 RIEC2011/2012

Digitally Assisted RF
Digital RF Signal Processing

Modulator

Encoder

Channel selector

Voltage controlled
oscillator (VCO)

Antenna
MobileConferenceTx Signal(Digital)

DAC

ADC
Rx Signal(Digital)

Channel measurement
and estimation
Frequency
domainequalizer(FDE)

Demodulator

Decoder

Heterogeneous/
Channel Estimation
Signal Processing

Fig.2 One-chip transceiver LSI for broadband wireless communication

欧文2011̲本文̲2011‐2012 11/09/17 16:01 ページ 22

Information Storage
Systems
Staff:
Hiroaki MURAOKA, Professor
Simon J. GREAVES, Associate Professor
Kenji MIURA, Assistant Professor

K. MIURA

H. MURAOKA

S. J. GREAVES

Research activities:
Our main interest lies in high-density information storage technology. The core technology is magnetic
recording with fast data transfer and large storage capacity, which is applied for hard disk drives, magnetic
tape storage, and flexible disk drives. Recently, multi-media information such as digital movie and musicthat requires very large storage capacity begins to be used in broad applications from consumer
electronics to mobile communication. This trend accelerates the areal density increase of magnetic
recording. Recording theories, devices, and systems based on perpendicular recording are being studied
in order to attain ultra-high density information storage. Our target is the terabit storage (Over 5 Tbits/inch2
areal density), in which the bit size corresponds to the area of 10 nm by 10 nm.

Information Storage Systems Research Division (Profs MURAOKA, MIURA)
A single-pole head and perpendicular disks are investigated through read/write experiments, as shown in Fig 1, to improve
the recording performance. For extremely large capacity storage systems, the storage grid working on a network, as shownin Fig 2, is also explored.

Research topics:
1. High areal density hard disk drives
2. Head/disk devices for high density magnetic storage
3. Digital signal processing for high density storage
4. Network storage for large capacity file server

Recording Theory Computation Research Division (Prof. GREAVES)
A computer simulation utilizing micromagnetics is being carried out to obtain a guideline towards ultra-high density
recording.

Research topics:
5. Micromagnetics simulation for high density read/write theory

Fig 1 Read/write measurement by using a single‑
pole head and a perpendicular media.

Fig 2 A large‑scalestorage systemwith parallel
HDD operation.

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欧文2011̲本文̲2011‐2012 11/09/17 16:01 ページ 23

Ultra‑Broadband Signal
Processing
Staff:
Taiichi OTSUJI, Professor
Tetsuya SUEMITSU, Associate Professor
Akira SATOU, Assistant Professor
S. A. BOUBANGA TOMBET S. TAKABAYASHI
A. SATOU T. OTSUJI T. SUEMITSU
Stephane Albon BOUBANGA TOMBET, Research Fellow
Susumu TAKABAYASHI, Research Fellow

Research activities:
Terahertz (sub-millimeter) coherent electromagnetic waves are expected to explore the potential
application fields of future information and communications technologies.We are developing novel, ultrabroadband integrated signal-processing devices/systems operating in the millimeter-wave and terahertz
frequency regime.

Ultra-Broadband Devices and Systems (Prof. OTSUJI)
We are developing novel, integrated electron devices and circuit systems operating in the millimeter-wave and terahertz regions.
One example is the frequency-tunable plasmon-resonant terahertz emitters, detectors, and modulators. Another example is uniqueelectromagnetic metamaterial circuit systems based on optoelectronic dispersion control of low-dimensional plasmons. We are also
pursuing graphene-based new materials to create new types of terahertz lasers and ultrafast transistors,breaking through the limit on
conventional transistor/laser operation. By making full use of these world-leading device/circuit technologies, we are exploring future
ultra-broadband wireless communication systems as well as spectroscopic/imaging systems for safety and security.

Research topics:
1. Plasmon-resonant terahertz emitters/detectors/modulators and their system applications
2. Terahertz metamaterial circuit systems based on dispersion control of low-dimensional plasmons
3. Graphene-based terahertz lasers and ultrafast transistors, and their system applications

Ultrafast Electron Devices (Assoc. Prof. SUEMITSU)
Transistors are important building blocks for integrated circuits used in a lot of systems for information and communication
technologies. Particularly in optical fiber communication systems and (sub-) millimeter-wave frequency systems that require ultimately
high-speed operation, the channel materials of transistors should be chosen to realize high mobility and saturation velocity for carrier
electrons (or holes). In our group, we are focusing on three important material systems for such high-speed devices: the indium gallium
arsenide (InGaAs) material systems for ultimately high-frequency operation including sub-millimeter-wave regime, the gallium nitride(GaN) material systems for high-power millimeter-wave applications, and the graphene-based material systems as a new candidate forhigh-speed devices. Our activities include the design, process, and characterization of these devices and their integrated circuits.

Research topics:
4. InGaAs- and GaN-based heterostructure field effect transistors (FETs) for ultimately high frequencies in millimeter- and terahertzwave regime
5. Graphene-based transistors for high-speed and high-frequency applications

Cross‑sectional view and SEM
images of the plasmon‑resonant
emitter/detector device fabricated
FTIR‑measured broadband
with GaAs‑based heterostructure
emission spectra of single‑chipmaterial systems.
and multichip PREs in the self‑
oscillation mode.

Schematic view of terahertz‑
wave amplification by stimulated
emission utilizing population
inversion in optically pumped
graphene.

Time response of terahertz‑wave
amplification utilizing optically
pumped graphene measured byelectrooptic sampling.

Newly‑proposed plasmon‑resonant emitter (PRE) and graphene operating in the terahertz range.

23 RIEC2011/2012

欧文2011̲本文̲2011‐2012 11/09/17 16:01 ページ 24

Basic Technology for
Broadband Communication
Staff:
Masaaki INUTAKE, Visiting Professor
Y. KOGI

M. INUTAKE H. IKEZIJ. MASE（FukuokaInst.Tech)(Kyushu
univ.)(Kyushu
univ.)

Research activities:
Our main interest is to develop an air-borne synthetic aperture radar (SAR) for the civilian applications. The SAR is very
useful for all-weather surveillance and rescue in disastrous fires andsmokes. Scientists and engineers from both universities and industries
collaborate on this research project.
Gimbal‑fixing
flangeDevelopment of a high resolution (10cm), small size and light weight(25kg) SAR at Ku-band has been started in 2009 under the contract ofMinistry of Land, Infrastructure, Transport and Tourism.
Conceptual design of a real-time image-formation SAR system has been
done, as shown in the figure. A waveform synthesizer circuit with capabilityof precisely setting delay time has been developed in 2009.This isprerequisite for a real-time image formation.

2‑axis gimbal
Coax‑waveguideconverter

Inertia
Meas, Unit

Feed‑hornantenna
Offset parabolareflector

Real‑time imaging radar "LiveSAR"

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Electromagnetic Bioinformation
Engineering

Human Information
Systems Division
Advanced Acoustic
Information Systems

25 RIEC2011/2012

欧文2011̲本文̲2011‐2012 11/09/17 16:01 ページ 26

Visual Cognition and
Systems

Ubiquitous
Communications System

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Electromagnetic Bioinformation
Engineering
Staff:
Kazushi ISHIYAMA, Professor
Shuichiro HASHI, Associate Professor
K. ISHIYAMAS. HASHI

Research activities:
For realizing good communication with human body, and for realizing the properties of the human bodyas an information system, we have to realize the function of the human body as information in addition tocatch the signals from the human body. Our research division works on the technology for sensing theinformation from the human body and for approaching action to the human body. We are focusing torealize the communication technology with human body and to contribute information and communication
systems and medical-welfare spheres.

Electromagnetic Bioinformation Engineering（Prof. ISHIYAMA）
High-frequency carrier-type magnetic field sensor, which is developed in our laboratory, obtains the world-highest fieldsensitivity in room temperature under the works for materials, micro-fabrication techniques, controlling the magnetic
properties. This sensor is studied for sensing system for bio-information. As one of the approaching system for human body,
wireless actuators and manipulators are investigated. This technology is important for a basic study for robots working in thehuman body. A part of this technology is applied for a motion system for a capsule endoscope working in the colon tube.

Research topics:
1. Super high sensitivity magnetic field sensor
2. High-frequency electromagnetic measuring system

3. Micro magnetic actuator
4. New medical equipment using magnetic

Electromagnetic Bioinformation Materials（Assoc. Prof. HASHI）
Stressless and painless acquisition technique for accurately capturing the motion or the information of a human body isstrongly desired in the area of the medical treatment and/or rehabilitation therapy. In this research division, sensing systems
for temperature and for hardness are studied as no contact sensing systems. In addition, wireless magnetic motion capturesystem is studied for the medical and welfare use.
Development of functional magnetic materials and its fabrication process are also studied to progress these magnetic
sensing systems.

Research topics:
5. Wireless magnetic sensing system
6. Functional magnetic materials

High frequency carrior‑type thin film magnetic
field sensor

27 RIEC2011/2012

A prototype for motion ofcapsule‑endoscope

Wireless magnetic motion capture system

欧文2011̲本文̲2011‐2012 11/09/17 16:01 ページ 28

Advanced Acoustic
Information Systems
Staff:
Yôiti SUZUKI, Professor
Shuichi SAKAMOTO, Associate Professor
Takuma OKAMOTO, Research Fellow
Hiroshi, SHIBATA, Research Fellow

Yukio IWAYA, Associate Professor
Fumitaka SAITO, Technical Official
Zhenglie CUI, Research Fellow
Akio, HONDA, Research Fellow

H. SHIBATA A. HONDA Z. CUI T. OKAMOTO F. SAITO
S. SAKAMOTO Y. SUZUKI Y. IWAYA

Research activities:
We are aiming at developing advanced and comfortable acoustic communications systems exploiting
digital signal processing techniques. Moreover, to realize this, we are also keenly studying the information
processing in the human auditory system and multimodal information processing including hearing. We
mainly apply psycho-acoustical approaches to study human auditory and multimodal perception.

Advanced Acoustic Information Systems（Prof. SUZUKI）
With good knowledge of the human auditory and other perceptual systems, we are aiming at the realization of a 'comfortable' soundenvironment; development of three-dimensional auditory displays is a typical example. These systems are keenly required to realize
the multimedia universal communications.

Research topics:
1. Auditory and multimodal information processing.
2. System theory of spatial information processing.
3. Development of new theories of acoustic digital signal processing.

Acoustic Information Communications（Assoc. Prof. IWAYA）
A lot of efforts are put to realize 3D sound space communication systems based on the system construction theory and knowledgeof spatial hearing. Based on these systems, future principles for communications with a high sense of presence are keenly studied.

Research topics:
4. Spatial hearing communication systems.
5. Multimodal sound space communications.

Auditory and Multisensory Information Systems（Assoc. Prof. SAKAMOTO）
The knowledge of multisensory information processing is crucial to develop advanced information systems. We are studying themechanism of this processing and applying to the auditory information systems.

Research topics:
6. Mechanism of multisensory information processing including hearing.
7. Auditory information systems based on multisensory information processing.

Accurate sound space communication
system based on higher order Ambisonics
by using 157ch speaker array

Head related transfer functions as a fuctionof elevetion. Poles and zeros changesystematically with the rise of elevetion.

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欧文2011̲本文̲2011‐2012 11/09/17 16:01 ページ 29

Visual Cognition and
Systems
Staff:
Satoshi SHIOIRI, Professor
Ichiro KURIKI, Associate Professor
Rumi TOKUNAGA, Assistant Professor
Kazumichi MATSUMIYA, Assistant Professor
Mitsuharu OGIYA, Research Fellow
Kazuya MATSUBARA, Research Fellow
Ryoichi NAKASHIMA, Research Fellow

R. TOKUNAGA M. OGIYA R. NAKASHIMA K. MATSUBARA
I. KURIKI
S. SHIOIRIK. MATSUMIYA

Research activities:
Human brain is one of the most adaptable systems in the world. Understanding the brain functions is oneof the most important issues for evaluating and designing things around us to improve the quality of life.
We investigate the brain through visual functions to apply the knowledge to human engineering and image
engineering. Our approaches include psychophysics, brain activity measurements, and computer
simulations. Our research field covers visual spatial perception, 3D perception, color vision, visual
attention and visual-haptic integration.

Visual Cognition and Systems (Prof. SHIOIRI)Modeling the processes of human vision based on the findings of the strategies that the visual system uses, we plan topropose appropriate methods for evaluation of image qualities, efficient way of image presentation and evaluation of visualenvironments in general. We also investigate dynamic selection process in vision with or without attention to realize
prediction system of human perception and action in the future.

Research topics:
1. Measurements of spatial and temporal characteristics of visual attention.
2. Modeling control system of eye movements and visual attention
3. Investigation of early, middle and late vision of 3D perception.

Cognitive Brain Functions (Assoc. Prof. KURIKI)
Our perceptual experience arises from neural activities in the brain. Studies of these neural activities are critical forunderstanding the mechanisms of visual perception. Moreover, presenting visual information in order that the visual
information is suitably represented in the brain can provide the way to display proper visual information in information andcommunication technology. Here we investigate the brain functions of visual perception (mainly on color perception) using
brain-activity measurement and analysis in relation to visual perception.

Research topics:
4. Representation of color information in human brain
5. Separation and integration of visual information in human brain

Independent measurements of attended andfixated points. An oversight and a mistakecan cause a serious accident under thesituation that you drive a car. For example,
investigating the relationship between gazeand attention can provide a new insight into
this problem.

29 RIEC2011/2012

Representation of visual information in theearly stage of human visual cortex is still
unknown. The mechanisms of visual
information processing will be investigatedby using behavioral studies and functional
brain‑imaging studies. This study may reveal
the “optimal coding method” of the visual
information for human brain.

How does the perceptual system integratevisual and haptic information in motion
processing? We compared the magnitude ofvisual motion aftereffect in the haptic
movement condition with that in the no
haptic movement condition. This study may
reveal the mechanism underlying visual‑
haptic integration in motion processing.

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Ubiquitous Communications
SystemStaff:
Shuzo KATO, Professor
Hiroyuki NAKASE, Associate Professor
Hirokazu SAWADA, Assistant Professor

H. SAWADA

S. KATO

H. NAKASE

Research activities:
To realize the communications environments in which everybody can communicate without paying
much attention to the tools, the Laboratory has been focusing on the core technologies and applications of
60 GHz Super Broad Band Wireless Communications in which people can communicate at the speed ofmulti-Gbps freely. These includes propagation, antennas, RF devices, modem, FEC, MAC, up to systemdesign. Also, the Laboratory has been promoting Japanese technologies to be standerdized at IEEE802
Standardization, and has contributed in leading the standerdization as Vice Chair (acting Chair) and Chairof the global Consortium.

Ubiquitous Communications System (Prof. KATO)
To solve the key issue of millimeter wave communication systems that is reliability, the laboratory has carried out
researches on (1) beam forming antenna with discrete phase shifters (90 degree resolution) and has successfuly developed
close-to-commercial level double slot antennas (patent pending) (Fig.1), and (2) high reliability communications systems
deploying artificially installed reflectors that resulted in reducing the communications interruption probability by a factor of 10.
Furthemore, reserches have been carried out on low power consumption FEC and modems as well as applications of
millimeter wave communications such as wireless harness communications systems that deploy metalized hoses to reduceweight of automobile harness and increase the reliability.

Ubiquitous Communications Device (Assoc. Prof. NAKASE)
A 20% power added sfficiecy has been targeted for the 60 GHz CMOS amplifiers used for beam forming antenna systems
by deploying "Cascode driver and Class-B source ground" amplifiers (Fig.3). Also 60 GHz phase shifters have been studied.

Fig. 1

Double slot beam forming antenna (top) and its
directivity (bottom)

Fig. 2 Image of interruption reduction Fig. 3 Drain efficiency of 60 GHz
by deploying reflectors
source ground PA

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Software Construction

Systems & Software
Division

Computing Information
TheoryCommunication Network
Systems

31 RIEC2011/2012

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Information
Content

Information Social Structure(Visitor Section)

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Software Construction
Staff:
Atsushi OHORI, Professor
Katsuhiro UENO, Assistant Professor
Akimasa MORIHATA, Assistant Professor

A. MORIHATA

A. OHORI

K. UENO

Research activities:
Nowadays, a variety of software systems manage everything in the world. Therefore, firm foundations fordeveloping high performance and highly reliable software are essential for continuous advance of oursocieties.
We are studying foundation of software. We mainly focus on programming languages and databasesystems, which provide bases of software developments and data managements, respectively. The major
research issues include fundamental theories for reliable software, design of productive and reliable
programming languages, implementation techniques for high performance software, and softwaredevelopment frameworks that enable seamless integration of a variety of resources, such as programming
languages, databases and distributed computational environments.

Software Construction (Prof. OHORI)
Today’s software systems are becoming more and more complicated due to the need of integrating various computation
resources available in the Internet. A key to control the complexity and to enhance the reliability of such a system is todevelop a high-level programming language that can directly represent various resources and automatically detect potential
inconsistencies among the components in a system.
Based on this general observation, our research aims at establishing both firm theoretical basis and implementation
method for flexible yet reliable programming languages for advanced Internet computation. One direction toward this goal isto establish logical foundations for compilation. We aim at establishing a proof-theoretical framework that accounts for theentire process of compilation -- including A-normalization and code generation -- as a series of proof-transformations.
Another direction is to provide systematic methods of developing efficient programs by program transformation. Programs
should correspond to their formal specifications. Our approach is to extract program-development processes by rephrasing
the correspondence by program transformations. In addition to those foundational researches, we are also developing a newpractical ML-style programming language, SML#, that embodies some of our recent results such as record polymorphism,rank 1 polymorphism, and high-degree of interoperability with existing languages and databases.

Research topics:
1. Development of SML#, a new ML-style polymorphic programming language
2. Logical foundation for compilation
3. Integration of databases and programming languages
4. Program transformations for developing/optimizing algorithms
5. Reliable scripting languages for Web programming

SML#, a state of the art compiler

33 RIEC2011/2012

A framework for deriving algorithms by programtransformations

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Computing Information
TheoryStaff:
Yoshihito TOYAMA, Professor
Takahito AOTO, Associate Professor
Kentaro KIKUCHI, Assistant Professor

K. KIKUCHI

Y. TOYAMA

T. AOTO

Research activities:
Equational reasoning is ubiquitous in many areas of computer science such as automated theorem
proving, formula manipulating systems, algebraic specifications, and functional and logic programming
languages. Rewriting is a mathematical formalism which can offer both flexible computing and effective
reasoning with equations. We aim at developing a unified theory of computational-logical-algebraic
systems based on the theory of rewriting systems combining computations and proofs.

Computing Information Theory（Prof. TOYAMA）
Our research focuses on important theoretical features of the rewriting paradigm, such as the Church-Rosser property, thetermination property, and the modular property. We are also interested in design and analysis of automated deduction
systems which can offer both effective computation of functional (or logic) programming languages and flexible reasoning of
automated theorem provers. We are investigating program verification and transformation systems based on automatedtheorem proving techniques.

Research topics:
1. Rewriting Theory
2. Foundations of Softwares
3. Automated Deduction

Computing Logical Systems （Assoc.Prof. AOTO）
We are developing techniques for verifying important properties of rewriting systems such as the Church-Rosser property
and the termination property. We are also interested in proving inductive properties of rewrite systems and lemma
generation methods for this. We are trying to extend these techniques to higher-order rewriting systems which are amenable
for modeling more practical functional programs.

Research topics:
4. Rewrite Systems
5. Automated Theroem Proving

Proof by Equational Reasoning → Computation by Rewriting Systems

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Communication Network
Systems
Staff:
Tetsuo KINOSHITA, Professor
Hideyuki TAKAHASHI, Assistant Professor
H. TAKAHASHI

T. KINOSHITA

Research activities:
Various networks exist everywhere in the society, and information systems over such networked
environment support everyday life and social activities of people and create new life styles as well as
information society. This laboratory aims at research and development of advanced network-based,
distributed intelligent systems.

Intelligent communication (Prof. KINOSHITA)
It becomes an important problem to develop intelligent systems, which can cooperate with various people as the humanfriendly, easy-to-use, intelligent partners, in order to support various creative activities of people in an active and autonomic
way. To realize such an intelligent system, we propose a concept called Cyberware as an infrastructure of cybersociety thatprovides people a new information environment in which people and intelligent systems can work together cooperatively. We
aim at studying advanced information technologies to realize a new infrastructure of cybersociety based on cooperation andcoordination of both people and intelligent systems over the networked environment, using the agent based computing
technologies.

Research topics:
1. Software Infrastructure of Cyber society (Cyberware)
2. Multiagent framework/Design methodology
3. Knowledge-based communication services/ User-oriented networking
4. Agent-based/Knowledge-based/Network-based systems

Knowledge‑based System and its applications based on
agent/multiagent technologies

35 RIEC2011/2012

Network Management System based on Active Information
Resources

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Information
Content
Staff:
Yoshifumi KITAMURA, Professor
Kazuki TAKASHIMA, Assistant Professor
Y. KITAMURA

K. TAKASHIMA

Research activities:
Good media content has the power to enrich our lives. Its effectiveness is becoming more and more
important in a wide variety of fields, such as industry, education, culture, and entertainment. Expectationsof its use in the general public are also increasing. Although the word content might be used to refer to asingle image or music we use the broader definition of content.

Interactive Content Design (Prof. KITAMURA)
Content is provided to people through adequate output devices such as displays, such that people derive profoundpleasure by interacting with it through an appropriate input device. Through these interactions with content on acomputational device people can enhance their hedonistic feeling of satisfaction, happiness and excitement. Moreover,content is not always enjoyed alone but often in the company of others (e.g., friends, family, and so on) simultaneously. In
these cases, it is necessary to consider the “environment” in which groups of people enjoy the content and “atmosphere”
which is generated by the “environment.” Good interactive content has the potential to calm the “atmosphere” and in theprocess will often make the people in the environment more happy and friendly.
Thus, we focus on non-traditional content areas other than movies, music, and games, conducting comprehensive
research on a variety of interactive content which creates new value through interactions with humans, by considering theatmosphere including the content and human. In this context, the focus of our group is in researching new and innovativetechniques to interact with novel forms of content with the goal of enhancing the impact, effectiveness and hedonistic
feelings of the content to improve and enrich people’s lives. We focus on non-traditional contents along side more traditional
content like movies, music and games.

Research topics:
1. Displays and 3D Interaction Technologies
Designing original display systems to show visual information accurately and effectively, and interaction techniques tomake better use of these display systems (Fig. 1).
2. Interactive Video Content
Creating new interactive content from real video taken by cameras and computer-generated animations (Fig. 2).
3. Modeling and Controlling the “Atmosphere” in a Conversation Space
Aiming to stimulate the “atmosphere” in a conversation space by supplying real-time feedback to the users, we are
exploring means of sensing and analyzing changes in the space (Fig. 3).
4. Design and Evaluation of Novel Interaction Techniques
Designing and evaluating novel interaction techniques on target selection for variety types of displays including large andtouch displays.

Fig. 1

Fig. 2

Fig. 3

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Information Social
Structure
Masafumi YANO, Visiting Professor

M. YANO

Research activities:
There are close relationship between the way of communication and the behavior of human beings The communication
technology has so rapidly developed and brought about great social change including globalization of communication andphysical distribution Even this sophisticated technology, however, does not still work in harmony with human nature Because
the today information systems can only process learned information and requires all necessary information in advance Itmeans that the present information system cannot adapt to changing environment In contrast, biological systems such as
human beings can create information necessary to interpret external stimuli and to control actuators in real-time, byappropriately recognizing and judging unpredictably changing environment.
We will try to understand how living organisms create information, and to realize a new system for flexible information
processing.

Information Social
Structure
Norio SHIRATORI, Visiting Professor

N. SHIRATORI

Research activities:
In 21st century, we are facing with ”global environmental
changes” including global warming and ” social structural changes”
such as aging of the population. For absorbing and sublating thesechanges, we proposed a new computation paradigm, the concept
of “Symbiotic Computing”, in 1992. This idea places on values on
harmony between “Agents” (e.g. human, computer, internet, robot,
nature, country, culture and etc.). From the engineering point ofview, we have been pursuing researches on the “Symbiotic
Computing” which are its model, design and applications (Fig1).

Research topics:
1. Symbiotic Computing: Symbiotic between Human andInformation System
2. Disaster-oriented Network ・ Green Computing
3. Net Media / Smart Home / Supervisory and Health Support
System
4. Model of Symbiotic Information Society

37 RIEC2011/2012“Symbiosis” Society
Acceptance of Diversity

Independence Support
Green Environment

Recovery
Regeneration

䋼Politics䋾

Reciprocity

Energy-Saving

Science 䊶Technology
Healthcare
Supervision– Harmonization䋯Symbiosis–
Regional and Social

MutualAssistance

Conflicts

Acceleration of
Demographic Aging
and
Destruction of
Global Environment

DisasterLoss of Social Model

Socialism

Market Mechanism

Fig.1: Model of Symbiotic Information Society towards
Recovery and Regeneration

欧文2011̲本文̲2011‐2012 11/09/17 16:01 ページ 38

Sponsored Division
Environmental‑Adaptive Information
and Communication Engineering

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Environmental‑Adaptive Information
and Communication Engineering
Staff:
Eiki ADACHI, Professor
E. ADACHI

Research activities:
To embody a humanity-rich-communication by innovating information-and-communication technology (ICT) in thesustainable global society, we have to create human-friendly low-environmental-impact ICT devices and systems by using
electronic materials and device-technology in the research fields of Nanotechnology, Spintronics and Information
technology.
Our aim is that the embodiment of low-environmental-impact information devices and electronic equipments based on
fundamental theory of spin and electron; these are designed by systematic survey of the rapidly-changing industry needs
and R&D trends.
By analyzing the innovation trend in the fields of environmental and energy technologies, we embody innovative ICT
devices and equipments. Further we would like to lead a related ICT researcher's community to the desirable trend.

Research topics:
1. Passive sensor technology development for recording of environmental variation as structural changes in nanomaterials
2. Fundamental research for ICT devices and equipments reducing environmental destruction by human activities
3. Survey research for industry needs and R&D trend induced by moving to an environmentally sound society

A smart city balanced between human society and natural environment

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Atomically Controlled
Processing

Laboratory for Nanoelectronics
and Spintronics

Semiconductor
Spintronics

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Nano‑Spin
MemoryNano‑Molecular Devices

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Laboratory for Nanoelectronics
and Spintronics
Staff:
Director㧦Junichi
MUROTA Professor
Director:
Junichi MUROTA,
CooperationSection
SectionCooperation
Ryutaro SASAKI
Ryutaro SASAKI,
Technical Official
Sadao TSUCHIDA
Sadao TSUCHIDA, Technical Official
MEGURO
Toshiyasu Toshiyasu
MEGURO,
Research Fellow
Youtaro NISHIMURA, Research Fellow

R.SASAKI S.TSUCHIDA T.MEGURO J.MUROTA Y,NISHIMURA

Research activities:
The Laboratory for Nanoelectronics and Spintronics of the Research Institute of Electrical Communication was establishedon April of 2004. Its purpose is to develop and establish the science and technology of nanoelectronics and spintronics for
information technology. Utilizing the facilities installed in the Nanoelectronics-and-Spintronics building and undercollaboration between the RIEC and electro-related laboratories of the Graduate Schools of Engineering, Information
Sciences, Biomedical Engineering, Tohoku University, R&D of nanotechnologies of materials and devices in
Nanoelectronics and Spintronics will be continued extensively. Furthermore, nation-wide and world-wide collaboration
research projects will be conducted to build a systematic database in the electrical communication research area.
The Laboratory for Nanoelectronics and Spintronics mainly consists of research groups which promote following sections:
Atomically Controlled Processing, Semiconductor Spintronics and Nano-Molecular Devices; together with the groups ofIntelligent Nano-Integration System, Quantum-Optical Information Technology, and Ultra-Broadband Signal Processing.
These groups cooperatively carry out the research aimed at establishing a world-wide COE in the research area of
nanoelectronics and spintronics.

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COE of International Research
Collaboration
Based on the program(FY2005-2009) to build a system for international research collaboration by Special Funds for
Education and Research (Ministry of Education, Culture, Sports, Science and Technology, Japan), we aim to establish COE
in research fields of “Fabrication and application of semiconductor 3D-nanostructures”, “Establishment and application of
spin-control technologies in semiconductors”, and “Realization and application of information processing using molecularnanostructures”.

International conferences
have been organized withresearch groups in LNS.

Research collaboration
with visiting professors

COE of International
Research Collaboration

imec(Belgium

Massachusetts
Inst. Tech. (USA)

Universityof Vigo(Spain)Sendai

CNRS(France)
University of
Stuttgart(Germany)

Harvard
University (USA)International-collaborative
Research System

IHP & Berlin
Institute ofTechnology(Germany)

Polish Academy of
Sciences (Poland)

Chinese Academyof Sciences (China)

Princeton
University㩷
(USA)
University㩷 ofArgonne National
California (USA) Laboratory (USA)

Academic Exchange Programs
IHP-Innovations for High Performance microelectronics, Germany
Berlin Institute of Technology, Germany
Interdisciplinary Center on Nanoscience of Marseille (CINaM)-CNRS/University of Mediterranean, FranceInstitute of Semiconductors, Chinese Academy of Sciences, China
Institute of Physics, Polish Academy of Sciences, Poland
University of California, Santa Barbara (UCSB), USA
Harvard University, USA
University of Vigo, Spain

International Symposium held in LNS, RIECInternational Workshop on New Group IV
Semiconductor Nanoelectronics (RIEC Symp.)(1st: May 27-28, 2005; 2nd: October 2-3, 2006;
3rd: November 8-9, 2007, 4th: September 25-27, 2008 ;5th: January 29-30, 2010)

RIEC Symposium on Spintronics(1st: February 8-9, 2005; 2nd: February 15-16, 2006;
3rd: October 31-November 1, 2007, 4th: October 9-10, 2008;
5th: October 22-23, 2009; 6th: February 5-6, 2010;
7th: February 2-3, 2011)

3rd Int. Workshop on New Group IV
Semiconductor Nanoelectronics

International Workshop on Nanostructure &Nanoelectronics(1st: November 21-22, 2007; 2nd: March 11-12, 2010)

RIEC‑CNSI Workshop on Nano & Nanoelectronics,
Spintronics and Photonics(1st: October 22-23, 2009)

43 RIEC2011/2012

2nd RIEC Symposium on Spintronics‑
MgO‑based Magnetic Tunnel Junction‑
Left: Albert Fert (received 2007 Nobel
Prize in Physics); Right: Russel Cowburn欧文2011̲本文̲2011‐2012 11/09/21 10:42 ページ 44

Atomically Controlled
Processing
Staff:
Junichi MUROTA, Professor
Masao SAKURABA, Associate Professor

Research activities:

Y. CHIBA

J. MUROTA M. SAKURABA

For highly functional semiconductor devices with ultrahigh speed and ultralow power for the Si LSIs, our atomicallycontrolled processing technology by control of reaction in low-temperature CVD (Chemical Vapor Deposition) becomes
important increasingly. Utilizing the technology, we aim to create non-equilibrium strain-controlled Si-Ge-C group IV
semiconductors with high carrier concentration and high carrier mobility by advancing atomically controlled
heteroepitaxial growth of Si, Ge, SiGe, SiGeC and impurity (B, P, C, N and so on) to the extremity. Moreover, we also aim
to establish a technological basis for highly controlled nanometer-order three-dimensional structure formation.
By the above researches, highly strained nanometer-order three-dimensional structures and room temperatureresonant tunneling structures with higher performance which exceeds the limit of physical properties in use of existing
Si, SiGe alloy and Ge materials will be created. Simultaneously, by applying them to device fabrication, creation ofgroup IV semiconductor quantum-effect nanodevice applicable to the large scale integration will be expected.

Atomically Controlled Processing (Prof. MUROTA)
The following researches are being advanced: (1) Control of extremely high carrier concentration due to non-equilibrium atomicallycontrolled heteroepitaxial growth, (2) Modulation of energy band structure and carrier mobility due to introduction of atomicallycontrolled strain into Si and Ge, (3) Formation of the nanometer-order three-dimensional structure with nanometer-order thickness
utilizing CVD heteroepitaxial growth of unstrained Si/strained SiGe/Si heterostructures and selective etching with atomic layer control
to form highly strained Si and SiGe layers and to achieve extremely high carrier mobility in Si-Ge materials.

Research topics:
1. Atomically controlled heteroepitaxial growth of Si-Ge-C group IV semiconductors
2. Atomic layer doping into nanometer-order heterostructures of group IV semiconductors
3. Three-dimensional nanometer-order fabrication of group IV semiconductor heterostructures
4. Fabrication process of Si-based highly strained nanometer-order heterostructure devices

Group IV Quantum Heterointegration (Assoc. Prof. SAKURABA)
The following researches are being advanced: (1) Atomic-order control of highly strained group IV semiconductor heterostructureformation in a nanometer-order ultrathin region which utilizing plasma CVD reaction at low temperatures without substrate heating, (2)Systematic investigation and control of charge transport phenomena including quantum phenomena in the highly strained group IV
semiconductor heterostructures to find out novel electronic properties, (3) Heterointegration of the group IV semiconductor quantum
heterostructures and high-performance nanodevices into the Si large-scale integrated circuits.

Research topics:
5. Low-damage plasma CVD process without substrate heating for epitaxial growth of highly strained group IV semiconductors
6. Large-scale integration process of group IV semiconductor quantum heterostructures
7. Fabrication of high-performance nanodevices utilizing group IV semiconductor quantum heterostructures

Atomically controlled processing systems
for group IV semiconductors

Atomic lattice image of a SiGe heterostructure Atomically controlled processing forgrown by CVD at 500℃.
group IV semiconductors.

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Semiconductor Spintronics
Staff:
Hideo OHNO, Professor
Yuzo OHNO, Associate Professor
Fumihiro MATSUKURA, Associate Professor
Shoji IKEDA, Associate Professor
Keita OHTANI, Assistant Professor
Mohsen GHALI, Research Fellow
Katsuya MIURA, Research Fellow

K. OHTANI F. MATSUKURA M. GHALI K. MIURA
S. IKEDA
H. OHNO
Y. OHNO

Research activities:
In order to realize new functional spintronic and high-speed devices, our research activities cover the areas ofpreparation, characterization, and application of new classes of solid state materials as well as their quantum
structures, in which electronic and spin states can be controlled.

Functional Spintronics (Prof. H. OHNO)
We are working on materials, physics, devices and integration aspects of spintronics, in order to understand spin-related
phenomena in condensed matter and to realize low-power functional spintronics devices.

Research topics:
1. Spintronics
2. Spin-related phenomena in semiconductors

3. Magnetic metal functional devices and their application
4. Quantum cascade structures and their application to THz optical devices

Functional Spin Photonics (Associate Prof. Y. OHNO)
We are studying the properties and coherent dynamics of electron and nuclear spins in semiconductor quantum structures by using
such as high-sensitivity and high-time resolution optical characterization technique to establish novel spintronic devices technology.

Research topics:
5. Growth and characterization of electrical, optical, and spin properties of semiconductor quantum nanostructures
6. Spin coherence in semiconductor nanostructures and its application to quantum information technology and low power consumption
technology

Functional Spintronics Materials (Associate Prof. MATSUKURA)
We are working on the fabrication and characterization of spintronics materials and their based structures, in order to demonstrate
new principle of spintronics device operation.

Research topics:
7. Properties and application of magnetic semiconductors and their quantum structures

Nano-Spin Memory (Associate Prof. IKEDA)
We are developing technologies to realize high-performance low-power consumption spin memory and logic devices using magnetic tunnel
junctions (MTJs) consisting of ferromagnetic metal electrodes with in-plane or perpendicular magnetic anisotropy and insulating barrier.

Research topics:
8. Magnetic tunnel junctions with high output voltage
9. Metal-based spintronics devices

10. Spin transfer torque memory and logic devices(Left) Schematic of electric‑field defined magnetic nano‑dots. (Right) Development of the world’ s first high performance 40 nm φmagnetic tunnel junctions (MTJs) with CoFeB/MgO perpendicular anisotropy.

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Nano‑Molecular
Devices
Staff:
Michio NIWANO, Professor
Yasuo KIMURA, Associate Professor
Yuki AONUMA, Assistant Professor
Mohammad Maksudur RAHMAN, Research Fellow

Y. KIMURA
Y. AONUMA

M. M. Rahman
M. NIWANO

Research activities:
Miniaturization and performance improvement of various devices has been being sustained by the tremendous
progress of the semiconductor fine processing technology. On the other hand, nanotechnology or biotechnology toprepare and manipulate biomolecules, supramolecules, and nanostructures with unique electric and opticalproperties that are hardly obtained from other materials are advancing. Our aim is the realization of molecule-sized
electronic devices that can process various more sophisticated tasks by application of these unique materials
based on the Si technology.

Nano-Molecular Devices（Prof. NIWANO）
Sensing systems for analysis of biological materials such as DNA and protein molecules at the Si semiconductor surfacesthat manufactured and controlled by Si technology are developed. Observation equipments for biological materials andculture cells such as nerve cells are developed to elucidate the mechanism of intercellular communication and signal
processing.

Research topics:
1. Development of bio-sensing systems at semiconductor surfaces (Surface-Biotronics)
2. Function analysis of dynamics of cells based on the semiconductor technology
3. Investigation of the signal processing of the nerve cell network

Nano-Electronic Device（Assoc. Prof. KIMURA）
The mechanism of formation processes of nanostructures is investigated. Based on the elucidated mechanism, thenanostructure formation process is controlled by the semiconductor fine processing technology. The novel processes will beable to generate functions of nanostructures simultaneously with control of the position of them to fabricate nano electronic
devices.

Research topics:
4. Fabrication of nano electronic devices through electrochemical process
5. Fabrication of dye-sensitized solar cells using anodic TiO2 nanotubes
6. Development of high-power organic electronic devices using supramolecules or organic molecules

Fig.1: System for the analysis of biological
functions of living cells using infrared
spectroscopy.

Fig.2: Single electron transistor (SET)
fabricated by anodization.

Fig.3: Organic field‑effect transistor.

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Real‑World Computing

New Paradigm

Laboratory for
Brainware
Systems

VLSI System

Intelligent Nano‑Integration
SystemMicroarchitecture

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Laboratory for
Brainware Systems
Staff:
Director: Koji NAKAJIMA, Professor
K. NAKAJIMA

The Laboratory for Brainware Systems of the Research Institute of Electrical Communication was established in 2004. Its
purpose is to contribute to the research and development of advanced information science and technology for Brainware
systems which realize a seamless fusion of the changeable and complex real world and the cyber space.
We aim at establishing scientific and technological foundations for Real-World Computing (section), New Paradigm VLSI
System (section),Microarchitecture (section), Cyber Robotics (planning section), and Next-Generation Human Interface(planned section). The Laboratory for Brainware Systems consists of the above six sections which cooperatively carry out
the research. At the same time they serve as a laboratory for nation-wide cooperative research in the field of Brainware
systems.
The technology developed in the Laboratory is expected to enhance the research carried out in the four Divisions of theInstitute, and the research conducted in the Divisions, in turn, is expected to provide scientific basis for the information
technology developed in the Laboratory.

Physical and Adaptive Hardware Environment
 Virtual Space Construction
Cyber Robotics



Seamless Fusion of Real Worldand Multi-Modal Computing

 Human-Machine Cohabitation ArchitectureNext-Generation Human Interface Higher-Order Multimodal Perception
and Information Generation

 Real-World Dynamical Intelligence Real-World ComputingMulti-Modal Computing  

Hardware Environment with
Massively Parallel Brain LSI

 Nonvolatile Logic and Its Applications  Mixed Signal SoC Design
 Massively Parallel Neural LSIIntelligent Nano-Integration SystemNew Paradigm VLSI System Microarchitecture 

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Real‑World Computing
Staff:
Akio ISHIGURO, Professor
Dai OWAKI, Assistant Professor
Takeshi KANO, Assistant Professor
Kazuhiro SAKAMOTO, Assistant Professor
Wataru WATANABE, Research Fellow
Takahide SATO, Research Fellow

D. OWAKI

T. KANO K. SAKAMOTO
A. ISHIGURO

Real-World Computing (Prof. ISHIGURO)
Living organisms exhibit surprisingly adaptive and versatile behaviors in real time under unpredictable and unstructured
real world constraints. Such behaviors are achieved via spatiotemporal coordination of a significantly large number of bodily
degrees of freedom. Clarifying these remarkable abilities enable us to understand life-like complex adaptive systems as wellas to construct truly intelligent artificial systems. A prominent concept for addressing this issue is “autonomous decentralized
control”, in which non-trivial macroscopic functionalities are emerged via spatiotemporal coordination among vast amount ofautonomous components that cannot be explained solely in terms of individual functionality.
We study the design principles of autonomous decentralized systems that exhibit life-like resilient behaviors from theviewpoints of robotics, biology, mathematics, nonlinear science, and physics.

Research topics:
1. Control of soft-bodied robots with large degrees of bodily freedom
2. Autonomous decentralized control for various types of locomotion, e.g., slithering, swimming, flying, walking, running.
3. Dynamical system approach to understand versatility and its application to robotics.

True slime mold as a good livingorganism for studying autonomous
decentralized control

Soft‑bodied amoeboid robot driven by a fully
decentralized control scheme extracted fromtrue slime mold.

Quadruped robot driven by a fully
decentralized control

49 RIEC2011/2012

Autonomous decentralized control of asnake‑like robot that exhibits highly
adaptive and resilient properties.

Ophiuroid robot that enables
omnidirectional locomotion

欧文2011̲本文̲2011‐2012 11/09/17 16:01 ページ 50

Intelligent Nano‑Integration
SystemStaff:
Koji NAKAJIMA, Professor
Shigeo SATO, Associate Professor
Takeshi ONOMI, Assistant Professor

T. ONOMI K. NAKAJIMA S. SATO

Research activities:
Our research activities cover the fields of architectures of Brain computing systems, characterization
and application of artificial neural networks, and fabrications of intelligent integrated circuits, andexploitation of new devices for neural circuits.

Intelligent Nano-Integration System (Prof. NAKAJIMA)
We have constructed a stochastic artificial neural network with one million synaptic units, analyzed the dynamic behaviourof neural networks aiming at a time-dependent data processing, succeeded to propose a system where we are able to get
off successfully from any local minima fallen into on the way of data processing in neural networks, and fabricated its
prototype hardware system on the silicon microchip for brain computing systems. We have also presented an FFT and aneural system operated by using a flux quantum logic in superconducting integrated circuits.

Research topics:
1. Basic architecture for integrated active Brain computers
2. Dynamic intelligent associative memory system
3. Superconducting single flux-quantum data-processor

Integrated Superconducting Quantum System (Assoc. Prof. SATO)
We study on implementation of high-Tc superconductor multi qubits using intrinsic Josephson junctions and neuromorphic
adiabatic quantum computation algorithms for practical solid-state quantum computer and its application to brain computing
systems.

Research topics:
4. High-Tc Superconductor Qubit
5. Adiabatic Quantum Computation Algorithm

Microchip of a neural network

Microchip of a single
flux‑quantum circuit

RIEC2011/2012 50

欧文2011̲本文̲2011‐2012 11/09/17 16:01 ページ 51

Microarchitecture
Staff:
Shoichi MASUI, Professor
Takana KAHO, Visiting Associate Professor
T. KAHO

S. MASUI

Research activities:
Ubiquitous society has been established by the deployment of various wireless systems ICs. and it demands
advances in mixed-signal (analog and digital) design technique and higher integration through SoCs (System on a
Chips). Our research activities include architecture and circuit design of mixed-signal SoC applicable to wirelesssensor network systems for the healthcare applications and investigations on brain activities. Since a mixedsignal SoC combines RF/analog and digital blocks to minimize cost and power consumption, scaled CMOS
technologies must be used to minimize the digital block area. However, this scaling results in the significant
degradation of the intrinsic gain in analog transistors and the increase of power consumption if the dynamic range
is maintained with the reduced supply voltage. To overcome these problems, innovative improvements in thedesign of SoC architectures and circuits as well as their design methodology are required.
Our approaches expand digitally-assisted analog circuit design techniques to realize a mixed-signal platform forthe minimization of power/energy consumption in scaled CMOS technology. Furthermore, we focus on theinnovations in the RF/analog design methodlogy to minimize the development cost of the mixed-signal SoCs.

Microarchitecture (Prof. Masui)
In the mixed-signal platform, the compensation techniques for the gain reduction and tuning techniques for process
variations in analog components are adopted with the basis of the digitally-assisted analog design. Moreover, the state-of the-art RF/analog design methodology can minimize the power/energy consumption in the mixed-signal platform. We havedeveloped a prototype low-power transceiver for wireless sensor network systems with low-IF architecture featuring acomplex bandpass filter (BPF) with automatic digital tuning circuit. We are also targeting the minimization of the power
consumption in BPF with a newly developed active-Gm-RC architecture.
In terms of the design methodology, we have been investigating the analog design optimization with gm/ID lookup tables.
So far, we have established the power minimum design for the 2-stage Miller-compensated OTA (operationaltransconductance amplifier) and gain-boosted folded-cascode OTA; and in the latter application, we observed 40% power
reduction compared with a conventional design result. We are applying this technique to the verification of transistor model
parameters in various technologies.
The planned research project will take advantage of collaborations with semiconductor industries and EDA (Electronic
Design Automation) vendors and relationships with oversea universities and startup companies.

Research topics:
1. Mixed-signal SoC architecture and circuit design for wireless sensor network systems
2. Design automation and associated topdown design methodologies for RF/analog circuits.
3. Design and applications of software-definable mixed-signal circuits
4. Design and applications of nonvolatile memory

Mixed‑signal Platform

51 RIEC2011/2012

Transceiver IC for Sensor
Network Systems

Vision of Collaboration

欧文2011̲本文̲2011‐2012 11/09/17 16:01 ページ 52

New Paradigm VLSI
SystemStaff:
Takahiro HANYU, Professor
Masanori NATSUI, Assistant Professor
Atsushi MATSUMOTO, Assistant Professor

T. HANYU

A. MATSUMOTO M. NATSUI

Research activities:
Very Large-Scaled Integrated (VLSI) processors and their applications to electronic systems, where VLSI
processors are used as a "brain" for intelligent control like human beings, are the key components in the
recent information-communication-technology (ICT) society, while the demands for improving powerefficiency and system-reliability with maintaining their higher performances are still getting increased in
the recent nano-scaled era. In this research division, we design and implement a low-power and highly
reliable VLSI processor using novel device technologies and new-paradigm circuit architecture such as
logic-in-memory architecture.

New Paradigm VLSI System (Prof. Hanyu)
Rapid progress in recent deep submicron regime has led to the capability to realize giga-scaled embedded systems on achip, while the communication bottleneck between memory and logic modules has increasingly become a serious problem.
In addition, power dissipation and device-characteristic variation have been also the emerging problems in the recent VLSI
chip. In order to solve such the recent VLSI problems causing performance and reliability degradation, we focus on a “newparadigm VLSI computing” concept that investigates the optimal design through all the VLSI design layers such as adevice/material design level, a circuit-architecture level, a logic-synthesis level, a system-architecture level, and an
application-oriented algorithm level. The use of “logic-in-memory VLSI architecture,” where storage elements are
distributed over a logic-circuit plane, makes global wires reduced greatly. To implement a logic-in-memory VLSI compactly,
we utilize multi-functional and nonvolatile devices such as ferroelectric devices, magnetic tunnel junction (MTJ) devices andphase-change devices. We are also focusing on other challenging research subjects concerning with a new-paradigm VLSI
computing system, such as asynchronous network-on-chip (NoC) and process-voltage-temperature (PVT) variation-aware
VLSI architecture. Preliminary research subjects in our laboratory are listed below:

Research topics:
1. Logic-in-memory VLSI architecture and its applications
2. Nonvolatile logic and its application to ultra-low-power VLSI processors
3. PVT-variation-aware VLSI architecture and its applications
4. Device-model-based new-paradigm VLSI computing architecture
5. Asynchronous-control/multiple-valued data representation-based circuit for a high-performance Network-on-Chip/RFDOL]HGGDWDWUDQVIHU

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RIEC2011/2012 52

欧文2011̲本文̲2011‐2012 11/09/17 16:01 ページ 53

Research Center for21st Century Information
Technology

Technology Development
Division
Mobile Wireless Technology
GroupTechnology Development
Division
Storage Technology Group

53 RIEC2011/2012

欧文2011̲本文̲2011‐2012 11/09/17 16:01 ページ 54

Research Center for 21st Century
Information Technology（IT‑21Center）
Director: Hiroaki MURAOKA, Professor

Project Planning Division
Makoto FURUNISHI, Visiting Professor

H. MURAOKA

Technology Development Division
Development of Dependable Wireless System and Device
Project Leader : Kazuo TSUBOUCHI, Visiting Professor
Tadashi TAKAGI, Visiting Professor
Development of Super High-Speed Mass Storage HDD
Systems
Project Leader : Hiroaki MURAOKA, Professor *Kazuhisa FUJIMOTO, Professor
Hajime AOI, Visiting Professor
Takehito SHIMATSU, Associate Professor
Kiyoshi YAMAKAWA, Visiting Associate Professor

IT‑21 Center

The purpose of the IT-21 center is development of practical technologies for IT based on the advanced
technologies of RIEC with the partnership among Industry, Government and Universities. The term of development
is limited less than 5 years. The projects are planed on matching with both basic technologies in the University andapplication in the Industry. Combination of the technologies of the University and Industry makes practicaltechnologies with availability for the commercial products. The center actively accelerates to obtain the intellectual
properties generated from the development of practical technology to the Industry.

RIEC2011/2012 54

欧文2011̲本文̲2011‐2012 11/09/17 16:01 ページ 55

Technology Development
Division
Mobile Wireless Technology Group
Staff:
Kazuo TSUBOUCHI, Visiting Professor
Tadashi TAKAGI, Visiting Professor

K. TSUBOUCHI

T. TAKAGI

Research activities:
Mobile wireless communication technology is one of the significant communication technologies that support the IT
society, connected with the high-speed backbone network using optical fiber. Evolution of the mobile wirelesscommunication technology in Japan is indispensable to keep the leadership in this technology area in the world.
With the partnership of Japanese major mobile wireless manufacturers and Japanese Type I carrier, the mobile wirelesstechnology group of IT-21 center has been developing ultra-high-speed wireless communication technology and an ultrasmall wireless terminal by using three-dementional (3D) system-chip and using high density packaging for next generation
mobile wireless communication. As a result, so far, (1) 5GHz-band 324Mbit/s wireless LAN terminal, (2) ultra-small size 3D
system-in-package (SiP) millimeter wave wireless terminal for uncompressed high definition television (HDTV) transmission
have been successfully developed, and (3) seamless handover technology for wide area broadband mobile wireless access(MBWA) and seamless roaming technology between MBWA and wireless LAN have been successfully demonstrated byfield tests.
From 2007, the mobile wireless technology group will make a progress toward development of advanced practicaltechnologies for new concept "Dependable Air" which integrates all wireless systems. In addition, our group has a will forcontributing to the industry in Sendai area such as build up venture companies based on the developed practicaltechnologies.

Research topics:
1. Broadband wireless communication technologies for Dependable Air
2. High-speed and high frequency mixed signal Si system chip for Dependable Wireless System

Dependable Air Broadcast

PhysicalDistribution

Network

TDMA

CDMA

OFDMA

Car䊶ITSDistance
W CDMA
W-CDMA

1000m

PDC cdmaOne

cdma2000

Multi-Mode on One-Chip

802.16e802.20Wide-area(Cellular)

5GHz‑Band 324Mbit/s
wireless LAN terminal

Dependablep
WirelessWil
System
S

HSPA

Plant
Agriculture
Fishery
LTEAdvanced䊶䊶䊶䊶䊶䊶
VHT SG䊶䊶䊶

802.11 802.11b

PHSHigh data rate
802.11a/g

Wireless
e ess LAN

MedicalLTE

Wide-area

100m

Smart Grid

802.11nUltra highdata rate

10m
Zi b
ZigbeeSh t
Short-range
802.15.4
communication

Bluetooth802.15.1

mmWave802.15.3c
802
15 3
UWB

RF-ID
Standard
Non IEEEIEEE (IP friendly)

Ultra‑small‑size 3D SiP millimeterwave wireless terminal for
uncompressed HDTV

55 RIEC2011/2012

MBWA field test (Base station)

100k

1M

Narrowband

10M
Broadband

100M

Dependable Air

1G
10G
Data rate [bit/s]欧文2011̲本文̲2011‐2012 11/09/17 16:01 ページ 56

Technology Development
Division
Storage Technology Group
Staff:
Kazuhisa FUJIMOTO, Professor
Hajime AOI, Visiting Professor
Takehito SHIMATSU, Associate Professor
Kiyoshi YAMAKAWA, Visiting Associate Professor
Susumu OGAWA, Research Fellow
Hideki SAGA, Research Fellow
Masaki YAMADA, Research Fellow

K. YAMAKAWA M. YAMADA H. AKAIKE D. INOUE H. KATAOKA H. SAGA Y. OSAWA
S. OGAWA
T. SHIMATSU
K. FUJIMOTO
H. AOI

Hirotoshi AKAIKE, Research Fellow
Yuichi OSAWA, Research Fellow
Hiroyasu KATAOKA, Research Fellow
Daisuke INOUE, Research Fellow

Research activities:
High density and high data-rate hard disk drive (HDD) information storage technologies are core technologies for IT
infrastructure. In Japanese universities, only the Research Institute of Electrical Communication (RIEC) has maintained acomprehensive progress of research into information storage technology, including materials, devices and theory.
In March 2007, the IT21 cooperative research project between industry, academia and government was successfully
finished. An ultra-high small perpendicular magnetic recording prototype HDD and basic technologies for densities of 0.5 to
1 Tbits/inch2 were developed during the project.
A new project ;Development of super high-speed mass storage HDD systems started in August 2007 under thecollaborations between RIEC including IT21 storage technology group, major Japanese HDD manufacturers and otherlaboratories researching related technologies within Tohoku University.
The goals of this project are to develop the perpendicular recording technologies required for higher than 2 Tbits/inch2
recording density and, based on these technologies, to develop the system architecture for realizing large capacity, highperformance and low power consumption storage systems.

Research topics:
1. Development of fundamental technologies for the recording densities over 2 Tb/inch2; high sensitivity sensors, highrecording resolution SPT writers and high-density media including patterned media.
2. Development of a system architecture for high performance and low power consumption storage systems.

MFM images of a L11‑CoPt patterned films (Oneof fundamental technologies to realize densities
of over 2 Tbits/in2.

2‑dimension data allocation method with anaccess prediction

RIEC2011/2012 56

欧文2011̲本文̲2011‐2012 11/09/17 16:01 ページ 57

Fundamental Technology Center

Flexible Information System Research Center
Fundamental Technology Center
Management Office for Safety and HealthFlexible Information
SystemResearch Center

57 RIEC2011/2012

欧文2011̲本文̲2011‐2012 11/09/17 16:01 ページ 58

Flexible Information System
Research Center
Staff:
Director: Yôiti SUZUKI, Professor
Yoshihito TOYAMA, Professor*
Takuo SUGANUMA, Professor*
Gen KITAGATA, Associate Professor
Kazuto SASAI, Assistant Professor
Masahiko SATO, Technical Official
Johan SVEHOLM, Research Fellow

J. SVEHOLM
M. SATO
G. KITAGATA Y. SUZUKI K. SASAI

Research activities:
The present information systems represented by computers are inflexible systems, because their uses are predefined andthey provide only the fixed processing and functions. The flexible information system on the other hand, is a system which
can perform the flexible information processing adopted to the human intention and situation of its environment, and this cancorrespond to the flexible human thinking using multi-dimension perceptional information such as the visual and auditory
senses fully, beyond the limitations of the principles of the inflexible information processing. The aims of this research are
the exploration of principles of the flexible information processing through the theories and experiments, and theestablishment of their system construction methodology.
Moreover, we also study the flexible distributed systems for advanced organization, utilization, administration, operationand dispatching of science information, and are aiming at the establishment of construction methodology of them confirming
the effectiveness of the system with practical applications to the scientific information of RIEC on the network.

Research topics:
1. Information collection, organization, dispatching, utilization and research support environment.
2. Advanced maintenance, management and operation of network.
3. Relation between technology and ethics.
4. Perceptual information processing of living bodies and intelligent UI and OA.

Network room

Flexible Global Network
RIEC2011/2012 58

欧文2011̲本文̲2011‐2012 11/09/17 16:01 ページ 59

Fundamental Technology
CenterStaff:
Director: Yoichi UEHARA, Professor
Nobuyuki SATO, Assistant Professor
Fumitaka SAITO, Technical Official
Katsumi SAGAE, Technical Official
Koichi SHOJI, Technical Official
Tamotsu SUENAGA, Technical Official
Keisuke SATO, Technical Official
Hiroshi WATANABE, Technical Official
Yuji KONNO, Technical Official
Choichi TAKYU, Technical Official

N. SATO
H. WATANABE T. SUENAGA Y. KONNO
K. ABE K. SAGAE K. SATO R. YONEZAWA M. ABE C. TAKYU
S. AGATSUMA K. SHOJI F. SAITO Y. UEHARA M. SUGAWARA

Maho ABE, Technical Official
Kento ABE, Technical Official
Munetomo SUGAWARA, Technical Official
Ryuji YONEZAWA, Technical Official
Shigeto AGATSUMA, Technical Official

Pioneering researches and developments (R&D) in the wide range of disciplines spreading from basic sciences to applied
communication technologies have been carried out in the institute. Technical officials have traditionally contributed thesethough their well established skills and experienced knowledge. In order to maintain and develop such contributions towards
the future, the institute established the fundamental technology center in 2007. The technical supports required commonlyin the institute were rearranged in four technical divisions, i.e., machine, evaluation, processing, and software technicaldivisions. These divisions take charge of the following services.
The machine shop division develops advanced machining techniques, and offers them for developing and manufacturingexperimental apparatuses (e.g., see Fig. 1). This division also provides machining instructions to the students and faculty
members who carry out machining by themselves. The evaluation division offers various evaluation and measurement
techniques such as focused ion beam system (see Fig. 2) and electron probe X-ray micro analyzer (see Fig. 3). The glass
machining and the supply of liquid helium and nitrogen are also covered by this division. The processing division is, incooperation with the evaluation division, responsible for operating and maintaining the project clean room (PCR), one of thecommon-use clean rooms in the institute. Nanometer-scale electron beam lithographic techniques and customized opticalfilters in the visible and infrared spectral range can be provided by this division. The software technology division operates
and maintains the computer networks in the institute.

Figure 1 Dot patterned stamp

59 RIEC2011/2012

Figure 2 Focused ion beam system (FIB)

Figure 3 Electron Probe X‑ray Micro Analyzer(EPMA)

欧文2011̲本文̲2011‐2012 11/09/17 16:01 ページ 60

Management Office for
Safety and Health
Staff:
Manager: Michio NIWANO, Professor
Deputy Manager: Yoichi UEHARA, Professor
Nobuyuki SATO, Assistant Professor

The Management Office for Safety and Health is an organization with the objective of maintaining the health and safety ofstaff and students working at the institute. The use of chemicals, high-pressure gas and radiation in research activities at theinstitute entails many risks. The Management Office for Safety and Health provides support for safety and healthmanagement in facilities such as research laboratories, experimental facilities, and machine shops through various activities
to ensure that research activities within the institute are conducted safely and smoothly.
With respect to safety and health management, the Safety and Health Committee, comprising the Director, staff at theinstitute and industrial physicians, discusses various matters related to safety and health and the maintenance of the safety
and health management system at the institute, and submits recommendations to the Director and Faculty Council. The
Director and Faculty Council then finalize guidelines as advised by the contents of these recommendations. The guidelines
are then implemented into actual safety and health management operations at each of the facilities such as researchlaboratories.
Under collaboration with these organizations, the Management Office for Safety and Health takes charge of practices
related to safety and health, and operates to ensure safety and convenience in research activities at the institute.

Activity contents:
1. Inspection of and assistance in improving the safety and health management system and working environment within theinstitute.
2. Investigation of laws related to safety and health and collection of information regarding safety and health management.
3. Provision of advice and information to safety and health personnel in each department.
4. Implementation of various types of safety education targeted at staff and students.
5. Liaison and coordination with the supervisory authority and other departments on campus.

Safety and health seminar

High‑pressure gas seminar
RIEC2011/2012 60

欧文2011̲本文̲2011‐2012 11/09/17 16:02 ページ 61

Research Activities
Study Groups on Electrical Communication

Study Groups on Electrical Communication are organized to solve scientific and technological problems and topromote research and development through the collaboration of the Research Institute of Electrical Communication,
Group of ECEI (Electrical Engineering, Communication Engineering, Electronic Engineering, and Information
Engineering)in Graduate Schools of Engineering, Information Sciences, Biomedical Engineering, related scientists
and engineers inside and outside Tohoku University. The Study Groups on Electrical Communication consist of 15
Sub-Groups as listed, to deal with specific subjects. Each Sub-Group holds workshops and the abstracts of theworkshops are published annually in The Record of Electrical and Communication Engineering Conversazione
Tohoku University.
Many scientists and engineers not only from universities but also from government laboratories and industries
attend the workshops, present papers, and discuss issues very actively. We are pleased to provide information onthese activities upon request. Please contact the General Chairman or each Sub-Group Chairman for general
information or more specific questions.

Title of Sub-GroupElectromagnetic and Optical Waves Engineering

New Paradigm Computing

Acoustic Engineering

Ultrasonic Electronics

Sendai "Plasma Forum"

Brainware

Sendai Seminar on EMC

Mathematical Physics and its Application

Computer Science

to Information Sciences

Systems Control

Biocybernetics and Bioinformatics

Information-biotronics

Nanoelectronics and Spintronics

Spinics

Advanced Information Communication Engineering

The 7th International Symposium

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Symposiums Organized by the InstituteThis Symposium is planned to exchange relevant information on current important topics concerning ElectricalEng., Electrical Communications, Electronic Eng., and Information Eng. Many related researchers inside andoutside Tohoku University participate the Symposium and stimulate discussion.

Past Symposium

1

Title

Date

Quantum Electronics of Light Waves and Micro Waves

Feb. 6- 8, 1964

Magnetic Recording

Feb.14-15, 1964

2

Ultra-High Frequency Acoustelectronics

Feb.11-12, 1965

3

Artificial Intelligence

Mar. 8- 9, 1966

4

Thin Film Electronics

Jan.26-27, 1967

5

Crystal GrowthDec.19-20, 1967

61968 Sendai Symposium on Acoustelectronics

Aug.19-20, 1968

7

Current Status and Future Trends of Superconductivity

Jan.22-24, 19708

Speech Information Processing

Feb.24-26, 19719

Surface Acoustic Wave Technology

May.25-26, 197210

Liquid Crystals • Their Molecular Orientations and Application to Display Devices

Dec.13-14, 1974

11

Computer Network

Mar.17-18, 1975

12

The Memorial Symposium on the 40th Anniversary of the Foundation of RIEC

Sep.25-26, 1975

13

Application of Amorphous Ferromagnetic Materials

Mar.10-11, 1977

14

Stoichiometry of Compound Crystals

Nov.24-25, 1977

15

Submillimeter Waves

Nov.16-17, 1978

16

Solid State Chemical Sensors

Feb. 1- 2, 1980

17

Graph Theory and Algorithms

Oct.24-25, 1980

18

Perpendicular Magnetic Recording

Mar.11-12, 1982

19

Approach to Optical Computer

Mar.10-11, 1983

20

Plasma Non-Linear Phenomena - Basic Problems for Fusion Plasmas

Mar. 8- 9, 1984

21

New Computer Architecture

Jul.25-26, 1985

22

Guided Wave Technology and Its Application at Mid-Infrared

Mar.13-14, 1986

23

Physics and Applications of Tunnelling Phenomena

Mar.12-14, 1987

24

Biomagnetics and Bioelectronics

Feb.26-27, 1988

25

Ultrasonic Electronics - New Applications of Piezoelectricity

Feb. 2- 3, 1989

26

Boundaries between Light and Electromagnetic Wave

Feb. 1- 2, 1990

27

Issues and Realization of Pattern Recognition and Understanding

Feb.28-Mar.1, 1991

28

Discrete Algorithms

Oct.17-18, 1991

Perspective for New Computing Paradigm

Feb. 4- 5, 1993

29

Current Status and Future Prospects of System Control

Mar. 3- 4, 1993

30

Future Prospects of Electron Beam Devices

Nov. 1- 2, 1993

31

Discharge and EMC

Dec.20-21, 1994

32

Statistical Physics and Information Science

Mar.22-23, 1995

33

Photo-and Plasma-Excited Processes on Surfaces

Nov.30-Dec.1, 1995

34

Nano Spinics and Power Electronics

Feb.15-16, 1996

35

Potential Formation and Related Nonlinear Phenomena in Plasmas

Sep.17-19, 1996

36

New Trend in Ultrasonic Measurements

Feb. 3- 4, 199737

Toward the Realization of the High-Definition Multi-Media Communication

Nov. 4- 6, 1997

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International Symposium organized by the Institute
Title

Date

1

Intrinsic Josephson Effect and THz Plasma Oscillation in High Tc Superconductors

Feb.23-25, 19972

Design and Architecture of Information Processing Systems Based on The Brain Information Principle Mar.16-18, 1998

3

Novel Techniques and Applications of Millimeter-Waves

Dec.14-16, 1998

4

The International Joint Conference on Silicon Epitaxy and Heterostructures

Sep.13-17, 1999

5

International Workshop on Photonic and Electromagnetic Crystal Structures

Mar.8-10, 2000

6

Physics and Application Spin Related Phenomena in Semiconductors

Sep.13-15, 2000

7

Rewriting in Proof and Computation

Oct.25-27, 2001

8

Nonlinear Theory and its Applications

Oct.28-Nov.1, 2001

9

New Paradigm VLSI Computing

Dec.12-14, 2002

10

Ultra High Density Spinic Storage System

Oct.23-24, 2003

11

3rd International Workshop on New Group IV (Si-Ge-C) Semiconductors

Oct.12-13, 2004

12

3rd International Workshop on High Frequency Micromagnetic Devices and Materials (MMDM3)

Apr.11-12, 2005

13

4th International Conference on Silicon Epitaxy and Heterostructures (ICSI-4)

May.23-26, 2005

14

1st International WorkShop on New Group IV Semiconductor Nanoelectronics

May.27-28, 2005

15

GSIS International Symposium on Information Sciences of New Era: Brain, Mind and Society

Sep.26-27, 200516

The 1st RIEC International Workshop on Spintronics -Spin Transfer Phenomena-

Feb.8-9, 200617

4th International Workshopn on High Frequency Micromagnetic Devices and Materials (MMDM4)

May 8,2006

18

4th International Conference on Physics and Applications of Spin-Related Phenomena in Semiconductors (PASPS-IV)

Aug.15-18,2006

19

2nd International Workshop on New Group IV Semiconductor Nanoelectronics

Oct.2-3,2006

20

2nd RIEC International Workshop on Spintronics

Feb.15-16,2007

21

Japan-China Joint Conference on acoustics, JCA2007

Jun.4-6,2007

22

International Conference on Discovery Science / International Conference on Algorithmic Learning Theory

Oct.1-4,2007

23

The 3rd RIEC International Workshop on Spintronics

Oct. 31-Nov.1,2007

24

3rd International Workshop on New Group IV Semiconductor Nanoelectronics

Nov.8-9,2007

25

International Workshop on Nanostructures & Nanoelectronics

Nov.21-22,2007

26

The 18th International Symposium on Algorithms and Computation (ISAAC2007)

Dec.17-19,2007

27

International Interdisciplinary-Symposium on Gaseous and Liquid Plasmas (ISGLP 2008)

Sep.5-6,2008

28

4th International Workshop on New Group IV Semiconductor Nanoelectronics

Sep.25-27,2008

29

The 4rth RIEC International Workshop on Spintronics

Oct.9-10,200830

GSMM 2009 (Global Symposium on Millimeter Waves 2009)

Apr.20-22,200931

Mini R.I.E.C. workshop on multimodal perception

Apr.24-25,200932

The 4th International Symposium on Ultrafast Photonic Technologies

Aug.4-5,2009

33

PIMRC2009 (Personal Indoor and Mobile Radio Communications Symposium 2009)

Sep.13-16,200934

2nd RIEC-CNSI Workshop on Nanoelectronics,Spintronics and Photonics(5th RIEC Symposium on Spintronics)

Oct.22-23,2009

35

International workshop on the principles and applications of spatial hearing 2009 (IWPASH2009)36

5th International Workshop on New Group IV Semiconductor Nanoelectronics

Jan.29-30,2010

37

6th RIEC International workshop on Spintronics

Feb.5-6,201038

2nd International Workshop on Nanostructure & Nanoelectronics

Mar.11-12,2010

39

2nd RIEC International Symposium on Graphene Devices (ISGD2010)

Oct.27-29,201040

9th Japan-Korea Symposium on Surface Nanostructures (JKSSN9)

Nov.15-16,201041

The 7th RIEC International Workshop on Spintronics

Feb.3-4,2011

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Periodicals Published by the Institute

The Institute publishes the following two periodicals to inform readers on recent research results of theInstitute.
1. The Record of Electrical and Communication Engineering Conversazione Tohoku University
This journal aims at providing an opportunity to publish research results of the Institute as well as theresult of the Graduate Schools of Engineering, Information Sciences, Biomedical Engineering. Since thejournal also aims at publishing general research activities of the Institute and of the Graduate Schools
such as records of the final lectures of retiring professors, records of the Institute Symposium, andreviews.
The name of the Journal ‘Conversazione’ is attributable to the ‘Tuesday Conversazione’ at the
Department of Electrical Engineering, which had been held oncea week on Tuesday since around 1920. Minutes of the meetings
had been distributed to researchers outside of the University via
various routes and therefore some of them had been referred toas ‘Records of Tuesday Electrical Engineering ConversazioneTôhoku University’ with the result that they came to be treated as
official publications.
Though the meeting was once interrupted by World War Two, it
was restarted in 1947. In 1952, the publication of the records was
succeeded by the Institute and the records have been publishedas periodicals, two times a year recently, since No. 1 Vol. 21 waspublished in July, 1952.
2. The Annual Report of Research Activity at the Research Institute of Electrical Communication,
Tohoku University
Published annually since 1995. This report details the activitiesof each research division and research facility. Also included arereports on nation-wide co-operative research projects,
international symposium and seminars organized by members of
RIEC, and the reports and evaluation on the RIEC advisory board
members. English version is also avairable since 2007.

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Educational Activities

RIEC is keeping close contact with the School ofEngineering, Graduate School of Information
Sciences, and Graduate School of Biomedical
Engineering. All faculty members of RIEC holdpositions in these schools and have courses forgraduate and undergraduate students. Students
also have chances to join the research groups in
RIEC. In 2011, 40 undergraduate students, 145
master couse students, and 56 doctor course
students are studying at RIEC.

Presentation scene at a workshop

RIEC also receives many visiting professors,
visiting scholars, visiting students, and postdoc
researchers from all over the world.

Seminar scene at a laboratory

Marathon relay race

65 RIEC2011/2012

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International Activities

Many of the staff in RIEC contribute to the development of technology and science in the world by serving
as editors of referees of international journals or by chairing or programming international conferences. In
some fields in electronics, electrical communications, or information engineering RIEC serves as a Center of
Excellence(COE), which attracts many visiting researchers and students from all over the world every year.
Several academic exchange programs with foreign colleges or institutes are in operation.

International academic exchange programs:
The Institute of Physics, Polish Academy of Sciences (Poland)
The Interdisciplinary Center on Nanoscience of Marseille,
National Center of Scientific Research (France)
IHP-Innovations for High Performance microelectronics(Germany)
Institute of Semiconductors Chinese Academy of Sciences(China)WINLAB, Rutgers University (U.S.A)

12. Nature Communications
13. The Journal of Computer Animation and Virtual
Worlds
14. Japanese Jpurnal of Applied Physics
15. Applied Acoustics
16. Acoustical Science and Technology
17. Nonlinear Theory and Its Applications, ZEZCE
18. International Journal of Wireless Information
Networks
19. Optical Fiber Technology

University of California, Santa Barbara (U.S.A.)
King Mongkut's Institute of Technology Ladkrabang (Thailand)
The University of York (U.K.)
The Dresden University of Technology (Germany)
Berlin Institute of Technology (Germany)
National Tsing Hua University (Taiwan)
Universite de Technologie de Compiegne (France)
Harvard University (U.S.A.)
University of Vigo (Spain)

International journals in which a staff in
RIEC participates as an editor:
1. Higher-order and symbolic computation
2. International Journal of Energy, Information andCommunications
3. International Journal of Artificial Intelligence, Neural
Networks, and Complex Problem Solving
technologies
4. International Journal of Computer Science andNetwork Security
5. International Journal of Information Sciences andComputer Engineering (IJISCE)
6. SICE Journal of Control, Measurement, and System
Integration
7. Journal of Communications and Networks
8. Virtual Journal of Nanoscale Science and Technology
9. NPG Asia Materials
10. Journal of Magnetics (Korean Magnetics Society)11. Journal of SPIN

International conferences programmed bya staff in RIEC:
1. 3rd Semiconductor Technology for Ultra Large
Scale Integrated Circuits and Thin Film Transistors(ULSIC vs. TFT)
2. 7th International Conference on Silicon Epitaxy andHeterostructures (ICSI-7)
3. Symp.E9: "ULSI Process Integration 7", 220th
Meeting of the Electrochem. Soc
4. 2011 Conference on Lasers and electro-Optics(CLEO2011)
5. 16th OotoElectronics and Communications
Conference (OECC2011)
6. 2010 Asia-Pacific Microwave Conference(APMC2010)
7. 6th International ICST Conference on CognitiveRadio
8. Oriented Wireless Networks and Communications(Crown Com 2011)
9. The 2010 IEEE/WIC/ACM International Joint
Conference on Web Interlligence and Intelligent
Agent Technology
10. International Conference on knowledge Engineeringand Ontology Development 2010
11. The 22nd International Conference Industrial &Engineering Applications of Artif. Intell. & Exp.
Systems (IEA/AIE 2010)
12. The 5th International Conference on Ubiquitous

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Information Technologies & Applications(CUTE2010)
13. The 4th International Conference on Complex,
Intelligent and Software Intensive Systems (CISIS
2010)
14. The 5th International Symposium on Adaptive
Motion of Animals and Machines
15. SPIE International Conference on Defence,
Security, and Sensing
16. Topical
Workshopon
Heterostructure
Microelectronics (TWHM)
17. Asia- Pacific Workshop on Fundamentals andApplications of Advanced Semiconductor Devices(AWAD)
18. International Conference on Optical Terahertz
Science and Technology (OTST)
19. 11th International Conference on AtomicallyControlled Surfaces, Interfaces and Nanostructures(ACSIN)
20. 4th International Conference on Smart materials,
Structures and Systems (CIMTC)
21. 16th International Conference on Solid Films andSurfaces (ICSFS)
22. European Solid-State Device Research Conference(ESSDERC)
23. SPIE Photonics West, Conference OE01
24. IQEC/CLEO Pacific Rim, Program Subcommittee(Quantum Information and Cryptography)
25. 2011 Spintronics Workshop on LSI
26. 15th International Symposium on the Physics of
Semiconductors and Applications (ISPSA-XV)
27. 6th International School and Conference on
Spintronics and Quantum Information Technology(SPINTECH 6)
28. International Conference on Superlattices,
Nanostructures, and Nanodevices (ICSNN)
29. International Conference of Magnetism (ICM)
30. Asia Pacific Vision Conference 201131. International Multisensory Research Forum 2011
32. 10th Asia Pacific Conference on Computer Human
Interaction (APCHI)
33. 6th Annual ACM Conference on interactive
Tabletops and Surfaces (ITS2011)
34. 6th Advances in Computer Entertainment
Technology Conerence (ACE2010)
35. ACM Symposium on Virtual Reality Software andTechnology (VRST)
36. IEEE Symposium on 3D User Interfaces (3DUI)
37. IEEE International Symposium on Multiple-Valued
Logic

67 RIEC2011/2012

38. International Symposium on Low Power Electronics
and Design
39. 6th International Symposium on Control of
Semiconductor Interfaces (ISCSI-VI)
40. International Multisensory Research Forum (IMRF)
2011
41. Inter-noise 2011
42. International Symposium on Nonlinear Theory andits Applications
43. 6th International Workshop on Nanoscale
Spectroscopy and Nanotechnology
44. Personal, Indoor and Mobile Radio Communications(PIMRC)
45. Global Symposium on Millimeter Waves (GSMM)
2012
46. Magnetism and Magnetic Materials (MMM)
47. Intermag
48. European Conference on Optical Communication

欧文2011̲本文̲2011‐2012 11/09/17 16:02 ページ 68

RIEC Open Day

Every year RIEC holds an open day to present our
research and educational activities to public, including
university staffs, students and alumni as well as
representative from industry.
In 2010, the RIEC Open Day was taken place on
Saturday 9th and Sunday 10th of October. All the
research laboratories, research centers, and machine
shops of RIEC exhibited various types of demonstrations
focused on their research fields.
Exhibition included some historical devices andinstruments developed in RIEC, such as magnetron tubes
and steel recorders, as milestones of the RIEC activities.
On the other hand, experiments on cutting-edge
researches were also demonstrated, such as ultra-highspeed optical fiber data transmission, mixed-signal
integrated circuits, computer-aided design of materials,
and operation of micro-machines. Furthermore, visitors
were able to join handicraft courses for some simple
electronic gadgets such asgermanium radios,piezoelectric speakers, and so on.
In 2011, the RIEC Open Day will be held on Saturday
8th and Sunday 9th of October. Your participation isgreatly welcomed.

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Staff(as of 1st July 2011)

Director:Masataka NAKAZAWA, Professor

Yuji WAIZUMI、Lecturer*■ Research Divisions

Yoshio MIURA, Assistant Professor

Information Devices Devision• Nano-photoelectronics
Yoichi UEHARA, Professor
Satoshi KATANO, Assistant Professor

Kazutaka ABE, Assistant Professor
Masahito TSUJIKAWA, Research Fellow• Magnetic Devices（Visitor Section）
Masahide SASAKI, Visiting Professor
Koichiro HONDA, Visiting Professor
Hiroyuki KAGESHIMA, Visiting Professor• Quantum-optical Information
Technology
Keiichi EDAMATSU, Professor
Mitsuyuki NAKAO, Professor*
Hideo KOSAKA, Associate Professor

Daiji FUKUDA, Visiting Associate Professor

Broadband Engineering Division

Yasuyoshi MITSUMORI, Associate Professor• Ultrahigh-speed OpticalCommunication

Norihiro KATAYAMA, Associate Professor*

Masataka NAKAZAWA, Professor
Junji TADA, Designated Professor• Solid State Electronics
Maki SUEMITSU, Professor
Koji KOTANI, Associate Professor*
Hirokazu FUKIDOME, Assistant Professor
Roland Vino BANTACULO, Research Fellow

Hirohito YAMADA, Designated Professor*
Yuji MATSUURA, Designated Professor*
Toshihiko HIROOKA, Associate Professor
Masato YOSHIDA, Associate Professor
Yasuo OHDERA, Associate Professor*
Keisuke KASAI, Research Fellow• Dielectric Nano-Devices
Yasuo CHO, Professor
Sinichiro UMEMURA, Professor*
Yoshiomi HIRANAGA, Assistant Professor• Applied Quantum Optics
Hiroshi YASAKA, Professor
Takashi WATANABE, Associate Professor*

Kohei YAMASUE, Assistant Professor
Yasuo WAGATSUMA, Technical Official
Toshihiko IWAI, Technical Official• Wireless Info Tech
Noriharu SUEMATSU, Professor
Jun-ichi KUSHIBIKI, Professor*• Plasma Electronics
Akira ANDO, Professor*

Suguru KAMEDA, Assistant Professor
Shoichi TANIFUJI, Research Fellow

Satoru IIZUKA, Associate Professor*• Information Storage Systems• Materials Functionality Design
Masafumi SHIRAI, Professor
Kazuyuki TANAKA, Professor*

Hiroaki MURAOKA, Professor
Xiao ZHOU, Professor*
Simon J. GREAVES, Associate Professor
Kenji MIURA, Assistant Pofessor

69 RIEC2011/2012

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Taiichi OTSUJI, Professor

Satoshi SHIOIRI, Professor

Fumiyuki ADACHI, Professor*

Makoto YOSHIZAWA, Professor*

Tetsuya SUEMITSU, Associate Professor

Ichiro KURIKI, Associate Professor

Akira SATO, Assistant Professor

Noriyasu HOMMA, Associate professor*

Susumu TAKABAYASHI, Research Fellow

Kazumichi MATSUMIYA, Assistant Professor

Stephane Albon BOUBANGA TOMBET, Research Fellow

Rumi TOKUNAGA, Assistant Professor
Mitsuharu OGIYA, Research Fellow• Basic Technology for Broadband
Communication（Visitor Section）

Kazuya MATSUBARA, Research Fellow
Ryoichi NAKAJIMA, Research Fellow

Masaaki INUTAKE, Visiting Professor
Noboru IZUKA, Visiting Professor
Atsufumi HIROHATA, Visiting Associate Professor• Ubiquitous Communications System
Shuzo KATO, Professor
Kunio SAWAYA, Professor*

Human Information Systems Division• Electromagnetic Bioinformation
Engineering

Hiroyuki NAKASE, Associate Professor
Qiang CHEN, Associate Professor*
Hirokazu SAWADA, Assistant Professor
Lawrence Yasay MATERUM, Research Fellow

Kazushi ISHIYAMA, Professor
Kotaro HAMASHIMA, Professor*
Masahiro YAMAGUCHI, Professor*• Multimodal Computing（Visitor
Section）

Shuichiro HASHI, Associate Professor

Nobuyoshi KOSHIDA, Visiting Professor

Satoru TSUDA, Associate Professor*

Masato MIYOSHI, Visiting Professor

Yasushi ENDO, Associate Professor*

Ryuichi NISHIMURA, Visiting Associate Professor• Advanced Acoustic Information
Systems

Systems & Software Division

Yôiti SUZUKI, Professor• Software Construction

Hiroshi KANAI, Professor*

Atsushi OHORI, Professor

Akinori ITO, Professor*

Naoki KOBAYASHI, Professor*

Yukio IWAYA, Associate Professor

Eijiro SUMII, Associate Professor*

Shuichi SAKAMOTO, Associate Professor

Katsuhiro UENO, Assistant Professor

Hideyuki HASEGAWA, Associate Professor*

Akimasa MORIHATA, Assistant Professor

Masakazu KAWASHITA Associate Professor*
Fumitaka SAITO, Technical Official
Zhenglie CUI, Research Fellow
Akio HONDA, Research Fellow
Hiroshi SHIBATA, Research Fellow• Computing Information Theory
Yoshihito TOYAMA, Professor
Hiroki SHIZUYA, Professor*
Ayumi,SHINOHARA, Professor*

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Shinichiro OMACHI, Professor*■Research Facilities

Takahito AOTO, Associate Professor
Masao SAKAI, Lecturer*
Kentaro KIKUCHI, Assistant Professor

Laboratory for Nanoelectronics
and Spintronics
Director ： Junichi MUROTA, Professor• Communication Network Systems

Ryutaro SASAKI, Technical Official

Tetsuo KINOSHITA, Professor

Sadao TSUCHIDA, Technical Official

Hiroumi SAITO, Professor*

Toshiyasu MEGURO, Research Fellow

Hideaki SONE, Professor*

Yotaro NISHIMURA, Research Fellow

Kentaro INUI, Professor*
Takaaki MIZUKI, Associate Professor*
Hideyuki TAKAHASHI, Assistant Professor• Atomically Controlled Processing
Junichi MUROTA, Professor
Michitaka KAMEYAMA, Professor*• Information Content

Shigetoshi SUGAWA, Professor*

Yoshifumi KITAMURA, Professor

Masao SAKURABA, Associate Professor

Nei KATO, Professor*

Masanori HARIYAMA, Associate Professor*

Takuo SUGANUMA, Professor*

Yohei CHIBA, Research Fellow

Toru ABE, Associate Professor*
Terumasa AOKI, Associate Professor*• Semiconductor Spintronics

Kazuki TAKASHIMA, Assistant Professor

Hideo OHNO, Professor

Gengdai LIU, Research Fellow

Migaku TAKAHASHI, Professor*
Masashi SAHASHI, Professor*• Information Social Structure（Visitor
Section）

Yuzo OHNO, Associate Professor
Fumihiro MATSUKURA, Associate Professor

Hiroshi MATSUOKA, Visiting Professor

Masakiyo TSUNODA, Associate Professor*

Masafumi YANO, Visiting Professor

Masaaki DOI, Associate Professor*

Norio SHIRATORI, Visiting Professor

Keita OHTANI, Assistant Professor

Sriram SUBRAMANIAN, Visiting Professor
Takana KAHO, Visiting Associate Professor• Nano-Molecular Devices
Michio NIWANO, Professor

Sponsored Division

Rikizo HATAKEYAMA, Professor*
Tatsuo YOSHINOBU, Professor*• Environmental-Adaptive Information andCommunication Engineering
Eiki ADACHI, Professor

Kengo KINOSHITA, Professor*
Yasuo KIMURA, Associate Professor
Toshiro KANEKO, Associate Professor*
Ayumi HIRANO, Associate Professor*
Nobuyuki SATO, Assistant Professor
Yuki AONUMA, Assistant Professor
Mohammad Maksudur RAHMAN, Research Fellow

71 RIEC2011/2012

欧文2011̲本文̲2011‐2012 11/09/17 16:02 ページ 72• Nano-Spin Memory
Yasuo ANDO, Professor*
Tetsuo ENDOH, Professor*

Research Center for 21st Century Information
Technology
Director ： Hiroaki MURAOKA, Professor

Tetsu TANAKA, Professor*
Shoji IKEDA, Associate Professor
Mikihiko OOGANE, Assistant Professor*• Project Planning Division
Makoto FURUNISHI, Visiting Professor

Laboratory for Brainware Systems
Director ： Koji NAKAJIMA, Professor• Real-World Computing
Akio ISHIGURO, Professor
Hidetoshi MATSUKI, Professor*• Technology Development Division▲ Mobile Wireless Technology Group
Kazuo TSUBOUCHI, Visiting Professor
Tadashi TAKAGI, Visiting Professor▲ Storage Technology Group

Fumihiro SATO, Associate Professor*

Kazuhisa FUJIMOTO, Professor

Kazuhiro SAKAMOTO, Assistant Professor

Hajime AOI, Visiting Professor

Dai OWAKI, Assistant Professor

Koki TAKANASHI, Professor*

Takeshi KANO, Assistant Professor

Osamu KITAKAMI, Professor*

Takahide SATO, Research Fellow

Takehito SHIMATSU, Associate Professor

Wataru WATANABE, Research Fellow

Kiyoshi YAMAKAWA, Visiting Associate Professor
Satoshi OKAMOTO, Associate Professor*• Intelligent Nano-Integration System
Koji NAKAJIMA, Professor
Masayuki KAWAMATA, Professor*
Shigeo SATO, Associate Professor
Masahide ABE, Associate Professor*
Takeshi ONOMI, Assistant Professor

Nobuaki KIKUCHI, Assistant Professor*■Management Office for Safety and
HealthManager ： Michio NIWANO, Professor
Deputy Manager ： Yoichi UEHARA, Professor
Nobuyuki SATO, Assistant Professor• Microarchitecture
Shoichi MASUI, Professor• New Paradigm VLSI System
Takahiro HANYU, Professor
Osamu ICHINOKURA, Professor*
Takafumi AOKI, Professor*
Kenji NAKAMURA, Associate Professor*
Naofumi HOMMA, Associate Professor*
Atsushi MATSUMOTO, Assistant Professor■ Common Research Facilities• Flexible Information System
Research Center
Director ： Yôiti SUZUKI, Professor
Yoshihito TOYAMA, Professor*
Takuo SUGANUMA, Professor*
Gen KITAGATA, Associate Professor
Kazuto SASAI, Assistant Professor
Johan Leif Arne SVEHOLM, Research Fellow

Masanori NATSUI, Assistant Professor

RIEC2011/2012 72

欧文2011̲本文̲2011‐2012 11/09/17 16:02 ページ 73■ Fundamental Technology Center
Director ： Yoichi UEHARA, Professor
Fumitaka SAITO, Technical Official• Machine Shop Division
Tamotsu SUENAGA, Technical Official
Keisuke SATO, Technical Official
Kento ABE, Technical Official
Ryuji YONEZAWA, Technical Official
Hiroshi WATANABE, Technical Official
Munetomo SUGAWARA, Technical Official• Evaluation Division
Koichi SHOJI, Technical Official
Maho ABE, Technical Official
Yuji KONNO, Technical Official
Sadao TSUCHIDA, Technical Official
Shigeto AGATSUMA, Technical Official• Process Division
Katsumi SAGAE, Technical Official
Ryutaro SASAKI, Technical Official
Choichi TAKYU, Technical Official
Yasuo WAGATSUMA, Technical Official• Software Technology Division
Fumitaka SAITO, Technical Official
Masahiko SATO, Technical Official*Joint Appointment

73 RIEC2011/2012

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欧文2011̲表紙‐‐̲AD 11/09/20 10:33 ページ 4

Research Institute of Electrical Communication
Tohoku University
2‑1‑1 Katahira, Aoba‑ku, Sendai 980‑8577, JAPAN TEL（022）
217‑5420 FAX（022）
217‑5426

http://www.riec.tohoku.ac.jp

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