Reliability for Electronic Components and System
Name

OHTSU Takayoshi

E-mailohtsu@numazu-ct.ac.jp

Job Title

ProfessorDegree

Doctor（Engineering）

Academic Society and Association
Research Keywords
Technical Fields andpossible for collaboration

The Institute of Electrostatics JapanThe Institute of Electrical Engineers of Japan
Electromagnetic environment, ESD measurement, Plasma surface treatment

Topics・ Measurement technology of Electrostatic discharge phenomenon.
・ Development and evaluation technology of ESD protection materials.
・ Surface treatment by atmospheric pressure plasma.
・ Support for product development using TRIZ.

Details of the Research Theme
Reliability improvement for Electronic Components and System for Nursing robots, Communication robots, Automobile,Self-driving car, Drone transport, Manufacturing Process, Medical equipment, Aerospace aircraft, Next-generation power
supply network.
【1】

ESD protection Technology

Hierarchy of ESD protection【2】Material development and Evaluation

ESD voltage roadmap of semiconductor【3】Measurement Technology
Antenna

Unmodulatedlight

EO-Crystal

Input
light

Outputlight
Electrode
Light waveguide

Modulated
light

Optical E-Filed sensor【4】Surface treatment by atmospheric pressure plasma

Characteristic of ESD protection material

Atmospheric pressure plasmaInverter Control Using Vector Frequency Modulation
Name

Takano Akio

E-mailtakano@numazu-ct.ac.jp

Job Title

Professor

DegreeDoctor of Engineering

Academic Society and AssociationIEEJ,

Research Keywords

Power Electronics, Energy Conversion

Technical Fields andpossible for collaboration

Topics

Details of the Research Theme・・・IEEE

Inerter Control Using Power Electronics Techniques
Motor ControlVector Frequency Modulation for Power Converters

・Inverters are power converters that convert direct current into alternating current. A typical modulation method for theinverters is pulse width modulation (PWM). This method, in principle, requires a comparator, and when applied tothree-phase, it is necessary to generate a signal for each phase. .
Vector frequency modulation (VFM) does not require a comparator in principle, and when applied to three-phase, batchprocessing can be performed. VFM is a modulation method developed in our laboratory. VFM is a complete software
process, and is suitable for digital control of electric motors. Currently, we are promoting the application to various
inverters of VFM.
Fig. 1 is the example of the system structure. Fig.2 is the magnetic flux of the motor. The flux rotation speed iscontrolled by VFM . In this case, f is a frequency command, ○ is a zero voltage vector, and a black line is a non-zerovoltage vector’s orbit. Fig. 3 shows the voltage waveforms of the VFM inverter in steady state. Fig.4 shows the transientcurrent waveforms and the motor speed when the automatic phase-change is performed.

Fig.3 Voltage waveforms in steady stateFig.1 System structure

Fig.2

Magnetic flux controlled by VFM

Fig.4

Automatic phase-change in transient stateSimulation of surface wall interactions
in nuclear fusion plasma
Name

NISHIMURA Kenji

E-mailnisimura@numazu-ct.ac.jp

Job Title

Professor

DegreeDoctor of Engineering

The Japan Society of Plasma Science and Nuclear
Academic Society and AssociationFusion Research
The Institute of Electrical Engineers of Japan

Research Keywords
Technical Fields andpossible for collaboration

Nuclear Fusion, Plasma, Simulation
Topics・・Analysis of the transportation process of the hydrogen isotope fuel in gas
and the solid
Simulation of surface wall interactions in nuclear fusion plasma

Details of the Research Theme
About a nuclear fusion study, simulation programing to develop a nuclear fusion reactor is carried out to contribute to thesolution to energy problem. The nuclear fusion generation is relatively safe and is a clean generation system. As the fusion
reaction was the same as a phenomenon to be taking place in the sun, the artificial sun would be made if this was realized.
Materials evaluation to make such a device, the evaluation of the materials which are appropriate by the development of
the simulation program to analyze in pursuit of various processes and the program are performed.

Model of the fusion reaction by Deuterium and Tritium

Analysis of magnetic materials by micromagneticssimulation
Name
Job Title

Ohsawa Tomokatsu
Associate professor

Academic Society and Association
Research Keywords
Technical Fields andpossible for collaboration

E-mailt-ohsawa@numazu-ct.ac.jp

DegreeDoctor of Engineering

The Physical Society of Japan, The Magnetics Societyof Japanmagnetic memory、micromagnetics simulation、spintronics

Topics・・Analysis of magnetic materials by micromagnetics simulation
Theoretical considerations on magnetism and conduction

Details of the Research Theme
We aim to develop next-generation magnetic devices through micromagnetics simulation.
With the recent development of computers, it has become possible to numerically solve the problems of themagnetization structure in magnetic materials that could not be obtained so far by using micromagneticsimulation.Problems with the magnetic structure include miniaturization of HDD magnetic heads, improved stability,and increased surface storage density.
The Ohsawa Laboratory is paying attention to the race track memory, which is expected to be the next generation ofmagnetic memory. A racetrack memory is a magnetic device using a spin current, and is a magnetic memory in whichmagnetic walls that represent bits are arranged on a magnetic thin wire and those columns are slid by a spin current
to read a magnetization state by a reading unit (Figure 1). Larger capacity can be expected compared to the current
memory, and research and development are continuing toward practical use. Figure 2 shows a state of time evolution
when a skyrmion is slid by a spin current using a magnetic structure called a skyrmion instead of a domain wall as an
information carrier. It can be confirmed that the skyrmion is moving at the same speed by the spin current.
x  0  nm 100  nm 
200  nm t  0 st  3 ns t  6  ns t  9  ns t  12  ns t  15  ns 

Fig. 1 Schematic figure of racetrack memory

Fig.2 A state of skyrmion moving in a magnetic wireControl of Self-Assembling Nanostructure and Nano-Templating Applications
Name

KOMURA Motonori

E-mailm-komura@numazu-ct.ac.jp

Job Title

Associate Professor

DegreeDoctor of Engineering

The Society of Polymer Science, Japan, The Japan Society

Academic Society and Associationof Applied Physics, The Chemical Society of Japan

Research Keywords

Polymer, Liquid Crystal, Self-Assembly, Scanning Probe Microscopy

Technical Fields and Topics possible
for collaboration

・ Evaluation of nanostructure and nano-physical properties by SPM
・ Nanostructure analysis of thin film by grazing incidence X-ray scattering・ Control of self-assembling structure of soft materials
・ Measurements of mechanical, thermal and optical properties

Details of the Research Theme・Fabrication of nanostructure by bottom-up method via molecular self-assembly. Expected applications: ultra-high density storage
media, nanofilter, low dielectric constant material, wide interface solar cell, high sensitivity sensor, ion conductive membrane, etc.

Controlling the self-assembly behavior of a block copolymer (BC) allows for tailoring of the material’sstructure and properties for specific applications. Of particular interest are block copolymers that formcylindrical nanodomains that are perpendicularly oriented to a substrate surface and span the full width of
the film, which is crucial for mass transport through the cylindrical channels in a membranous film. In
comparison to the techniques for synthesizing conventional amorphous-amorphous block copolymers, theintroduction of a crystalline or liquid crystalline polymer to a block copolymer molecule is an excellent
synthesis approach for fabricating hierarchical structures. These hierarchical structures include
microphase-separated nanostructures and crystalline or liquid crystalline structures. We focus on the sidechain liquid crystalline BC.
We have developed amphiphilic PEO-b-PMA(Az) thin films that have anomalous, orientation-defined,
microphase-separated nanostructures, i.e., hexagonally arranged PEO cylindrical domains surrounded byPMA(Az) domains that are perpendicular to the surfaces of various types of substrates due to air-surface
induced formation of microphase-separated nanostructures. Another important characteristic forapplications process is that the cylindrical domains are not physical pores; instead, they are filled with
undercooled PEO at room temperature. The PEO-containing block copolymers work directly as a soft
template. We have utilized the PEO-b-PMA(Az) template to fabricate nanoscale functional materials using
the PEO cylindrical domains as ethereal, permeable channels. Both ends of the cylinder domains are open
as air and substrate interfaces. The following figure summarizes the templating processes in four categories:
domain-selective doping, etching mask with molecule-transport channels, domain-selective growth on
conductive substrates, and molecule-transportation membrane.
in-situ AFM

removal of
template

removal of
template

50 nm

thermalanneal
PEO-b-PMA(LC)rubbing
methodnanoparticlearray

selectivedoping

patterned
substrate
flow

nanorodarray

perpendicularcylinderwet etching

BC template
removal of
template

growth fromsubstratetransport
membraneFlow(10 mm)3

parallel cylinder

long range ordering

直径制御可能範囲：
controllable 2～26 nm

diameter: 2 – 26 nm

Evaluation and control ofself-assembling nanostructure

Template application and nanofilter of self-assembling nanostructure film

High Fidelity Color Reproduction
NameJob Title

TAKAYA Masanori

E-mailtakaya@numazu-ct.ac.jp

Associate professor

DegreePh.D.

Academic Society and Association

Society for Information Display

Research Keywords

Color reproduction, Imaging, Information display

Technical Fields andpossible for collaboration

Topics・・・・Color universal design.
Color matching between LCD and color printers.
Display calibration.
Display profile analyzing.

Details of the Research Theme
We provide a technical solution about color reproduction or color matching.
Imaging devices are designed for achieving preferred color reproduction instead of accurate color reproduction. Color
reproduction errors cause critical troubles in some situations such as online shoppings or telemedicine.
Some color conversion methods for hi-fi color reproduction were proposed in our laboratory. In order to evaluate ourmethods, we have a technique of measuring colors and calibrating devices. In addition, we try to evaluate color perception
which caused by diversity of human vision. A multi-spectral camera and a multi-primary display are adopted to evaluateit.

High fidelity color reproductions areimportant in tele-medicine.

conversion

CIEXYZ
R,G,B

conversion

CIELABRAW or JPEG
S1,S2,S3
R,G,B
Our study theme

conversion

R,G,B or C,M,Y,K

PSE system for healthy seedlings’ selection
Name

Manabe Yasuhiko

E-mailmanabe@numazu-ct.ac.jp

Job Title

Associate Professor

DegreeMaster of Engineering

・The Japan Society for Computational Engineering andAcademic Society and AssociationScience・Information Processing Society of Japan

Research Keywords
Technical Fields andpossible for collaboration

Problem Solving Environment, Plant Growth Detection, Plant Factory
Topics

Details of the Research Theme・・・・

Problem Solving Environment for a plant factory
Plant growth detection for a plant factory
System administration of a Linux based PC

Our study aims to automate healthy seedlings detection for a plant factory. Our study reduces cost of a plant factory.
We propose a PSE system for a plant factory. (PSE means Problem Solving Environment; It aims to solve various
problem by using computational science.) Generally the selection of seedlings in a plant factory is performed byexperienced staffs. The cost of this selection process is estimated about 25% of the total cost in a plant factory. Oursystem automates seedlings’ selection by using an image processing and a 3-axis-control robot. Therefore, oursystem would reduce the total cost of a plant factory. The system consists of the seedling detection and a seedlingmovement part. First, the system takes pictures of the seedlings. The system evaluates whether the seedlings arehealthy from the pictures taken using an image processing. The healthy seedlings are moved by a 3-axis-control robot.
Only the healthy seedlings are collected and aligned onto a tray for the next planting. Then in a real plant factory thetray is transferred to a cultivation room.

Diagram of our system

Research of haptic transmission system
Name

YAMANOUCHI Wataru

E-mailyamanouchi@numazu-ct.ac.jp

Job Title

Associate Professor

DegreePh.D.

Academic Society and Association

IEEE, IEEJ

Research Keywords

Motion Control, Haptic communication, tactile sensation

Technical Fields andpossible for collaboration

Topics・・・・Position control
Force control
Estimate of real-world force sensation
Remote control

Details of the Research Theme
Technological innovations and/or effective breakthroughs may find by applying haptic techniques to existing
technologies.
This solution offers the basic haptic techniques for your needs.
Haptic sensation is third sensation in remote transmission. Audio-visual sensation was already implemented in manytransmission systems. However, haptic transmission application doesn't be used in general.
The interactive characteristics of haptic sensation make it difficult haptic transmission as compared to audio-visualtransmission (Fig. 1).
Haptics include the measurement, processing, store, transmission, represent, of the real-world force sensation (Fig.
2). For example, soft actuation of industrial robot, safety communication between human and robot, recording humantechniques, remote communication feeling tactile sensation, and so on.

Fig.1 Multimedia communication

Fig. 2 Bilateral control for haptic communication