No.
Title
18aA-1 Thermally Stimulated
Current of PA/BaTiO3Composite Film

Name
Fukuzo YOSHIDA
Tsukasa OHTA
Masahiko
YOSHIURA

Abstract○Yasuro HORI,
Takeshi
YAMAKAWA，
Takuya HIRAO

Charging behavior of adhesive tapes on peeling was investigated for various adherends. On
measuring the charges of tapes, several improvements were achieved. 1)The charges onadhesive tapes generated by peeling has been found to induce the charges on the tweezers
which is used at peeling tapes off, and this induced charges reduce the measured value ofcharges. By using an complitely insulated tweezers to avoid the induced charges, the amount ofcharges on tapes has been acculately measured and the absolute value of charges on tapes
has been confirmed to be equal to those on the adherends. 2)The condenser charge storage
method was developed as a modification of current integration method for masuring the amountof charges. With this condenser charge storage method, it has been possible to invesitigate
charging on the conductive adhesive tapes such as an Al conductive tape. 3)To controll thehumidity in the measuring box, the effect of humidity on the amount of charges
generated on adhesive tapes can be observed.

18aA-3 Effect of environmental
factor on the decay oftriboelectric charge

Tsuneki Ichikawa

The decay rate of electric charge on triboelectrified insulating materials depends on several
environmental factors such as humidity, temperature and so on. Although humidity is known asa major controlling factor for the decay., the mechanism of the decay has not been fully
understood. The present study is aimed at clarifying the mechanism of the humidity-induced
decay by measuring the dissipated charge from several types of triboelectrified materials. The
experimental results suggest that water molecules attracted on triboelectric charges mobilize
the charges to induce the migration of the charges to less electro-repulsive environments.

18aA-4 Moisture Absorption andCharge Generation in
Polymeric Dielectrics*Sekii PE Consulting *Yasuo Sekii and
Office **National**Takashi Maeno
Institute ofInformation andCommunications
Technology

It is well-known that, under DC voltage stress, negative hetero-charges are generated near the
positive electrode in XLPE (Cross-linked polyethylene) and EPR (Ethylene Propylene Rubber).
The generation of negative hetero-charges is caused by such inclusions as acetophenone,
moisture and antioxidants in dielectrics. To investigate the influence of moisture absorption on
the generation of hetero-charges, the moisture absorption characteristics of LDPE, XLPE andEPR were analyzed, together with measuring charge profiles in those materials. The dissipationof generated hetero-charges is also touched upon.

18aA-2Affiliation
Osaka Institute ofTech. Nitto Denko
Co.LTD

Charging of Adhesive Tapes Graduate School of
on Peeling (3) - Several
Engineering，Nagoya
improvements on measuring Institute ofcharges and the effect ofTechnology
humidity on amount ofcharges -18aA-5 Characteristics of Negative Oita university
Spread Corona Discharge in
Needle-to-Plate Electrode
System (II)Recently, composite films of polymer and inorganic-filler are required as a key material forfurther compactness of electronic devices such as capacitor. We have studied, throughthermally stimulated current (TSC) measurement, to explain the effects of trap levels onelectrical conduction and charging properties of PA/BaTiO3 composite films. Trap parametersthat enable us to determine a TSC curve measured by thermal sampling can be accurately
determined through asymptotic estimation method (AEM). From TSC curves separated by AEM,
it was found that the four traps (0.440 eV, 0.541eV, 0.635 eV and 0.741 eV) were mainly formedin the composite film.

Toshiaki Kudo,
The electric discharge of a negative polarity has been made unsuitable for a gas processing. An
Syuichi Akamine, electric discharge of a positive polarity is because an ionization region is large, so the
Toshikazu Ohkubo treatment effficiency is good. However, in our research, the electri

18aA-6 Influence of Surface Tension Graduated School of ○Yuya Ohnishi，
on Corona Characteristic
Science andYoshiofrom a Fine water Droplet.
Engineering,Yamagata Higashiyama
University

18aA-7 Investigation of Discharging
Electrode Geometry of
Negative Spread Corona
Discharge Plasma Reactor
for Practical Use

Oita University

Corona discharge from a water droplet inevitably involves deformation of the droplet andemission of fine jets. Corona discharge phenomenon was investigated from a water drop locatedat a tip of grounded rod electrode facing to a ring electrode with positive dc potential. Ion
exchanged water and surface-active agent aqueous solution were used as a water sample. The
magnitude of viscosity and surface tension of water vary with water temperature or existenceof surface-active agent. Corona onset voltage for an ion exchanged water drop hardly affectedby temperature of water drop, surface tension with water temperature ranging. On the other
hand, corona onset voltage was decreased drastically with a concentration of surface-active
agent due to decrease of surface tension. Negative corona discharge from a water drop has aunique waveform. This would result from periodical variation of the shape of a water cone. As aresult, negative corona discharge with trains of Trichel-like pulses occurred after ejection ofcone jets. The peak and interval time between corona pulse within pulse trains were affected
strongly by applied voltage

Yusuke Sotoya,
If it continues discharging when a needle electrode is used for a discharge electrode, a needle
Shuichi Akamine, will be gall and the stable electric discharge will not be obtained. Then, we experimented by
Toshikazu Ohkubo using the different materials and form from a needle electrode. If a better electrode is created,
it will be helpful to the experiment of harmful gas processing.

18aA-8 Low Voltage Discharge at a School of Engineering, Yuto ONO, Tetsuji Electrostatic discharge (ESD) at low voltage causes bad things, such as destructions and error
Micro Gap in Air
The University ofODAof devices. But low voltage ESD shows different properties from those of high voltage ESD, soTokyo
properties and mechanism of electrostatic discharge at low voltage are not known well.In thisresearch, I examine some properties of low voltage ESD with the electric circuit with a switchthat simulates low voltage discharge at a micro gap.
18pD-1 Improvement of the
Characteristics of a Corona
Discharging Type Ionizer(Ⅰ）*Sendai National
College ofTechnology,**Shishido
Electrostatic, Ltd.

18pD-2 Space Charge Balance
Sensing System for Static
Control System

University of○Syamsul Arifin,
Industrial Technology Toshio Tanabe,Kazuo Okano○M. Hattori*, M. For a semiconductor producing or handling process, an ionizer or a charge eliminating device is
Goto*, D. Endo*, J. a necessity. A corona discharging type ionizer is common for such processes. In this paper, we
Sugaya*, T.
are investigating the performance of a piezoelectric ransformer type ionizer which has a
Saito**, K. Izumi** negative feedback gate circuit. This type has the merits of small size and is light, however, theuse of a high frequency power supply produces some ozone gas. In order to search for an
appropriate working condition of this ionizer, various experiments with different parameters of
the feedback gate frequency and duty ratio have been done. Moreover, a DC power supply typeionizer was tested and compared with the characteristics of the piezoelectric type one. As aresult, it is clear that the piezoelectric type has comparable performance in charge removal
time and generating density of ozone compared with the DC type ionizer.
Final voltage of products VPF (Ion balance) is one of the most important factors for static
neutralizing system. Two kinds of sensing system for ion balance control system were
investigated for measuring the VPF. The first is Static Sensing System (SSS) and the other is
Dynamic Sensing System (DSS). MOSFETs were used as voltmeter in SSS and ammeter in
DSS. The detection limit VPFMIN of both systems was below 100 mV. The response time τ ofthe DSS was 5 times higher than the SSS.

18pD-3 Discharge electrode emitter KASUGA DENKI, INC. Tomoko Nakayama, The electrostatic disaster caused by the electrostatic discharge is getting more and moredeterioration characteristic○Nobuo Nomura, serious problems in many industries. It is well known method in general to eliminate the chargedof the corona discharge
Yoshitsugu
charge with the corona discharged type ionizers. However, there is a problem that the corona
type ionizer
Okamura, Kazuaki discharge type ionizers create the dust from its electrode emitter pins and it becomes a factor
Nakajima Andof contamination problems in the environment. Recently, this contamination problem becomes
Fumiaki Hashimoto also a big factor to reduce the yield rate by contaminating the products with the dust fromemitter pins of ionizers in the certain industries. This report provides the deterioration
characteristic of the diamond made emitter pins used in electrostatic eliminator as the diamondmade emitter pins can solve the contamination problems.
18pD-4 Development of ion＊Technical R&D○Masanori
In order to control static electricity in narrow space such as space in ULSI and LCD
conveying type ionization
Center, Techno
SUZUKI＊，
manufacturing equipments, we have conducted the development of low energy X-ray ionization
system generating large
Ryowa Ltd., ＊＊Takashi MATSUDA system conveying ions through tubes, In the previous paper, we reported the results ofcharged-particles by ionicDept. of Ecological＊，Hideaki
evaluation in terms of the influence of several factors on charge eliminating performance of thenucleation of water vapor
Engineering,
MATSUHASHI＊ ionization system generating fine charged-mist (large charged particles) by the condensation
part2
Toyohashi University and Akira MIZUNO through adiabatic expansion. In this paper, we will report the results of investigation on theof Technology＊＊
influence of temperature of the humidified air, ratio of the flow rate with the purge air and typeof the nozzle on charge eliminating performance, for optimizing charge eliminating performanceof the new ionization system generating large charged-particles by condensing water vapor withthe vortex-tube.
18pD-5 Characteristics of ionic wind Oita University
Hiroshi Muto,
Many reports of research are performed about the corona discharge characteristic of negativeby Negative Spread Corona
Syuichi Akamine, polarity in needle-to-plate electrode system. However, we observed the spreading corona
Discharge in Needle-toToshikazu Ohkubo discharge of negative polarity which attains to even the opposite poles. We decided to call thismesh Electrode System.
discharge a “negative spread corona discharge”. It aims at acquiring the properties of the ionicwind generated by a negative spread corona discharge in this research. Therefore, the direct
current voltage of a negative polarity is impressed to a discharge electrode, and a spark
discharge is generated. And the cardinal trait about the properties of the ionic wind generated
between a needle electrode and a mesh electrode is acquired.
18pD-6 A Study of Separation ofTransferred Positive and
Negative Ions from AC
Corona Discharge

Dept. Electrical Eng.
＊, Yamagata
University, KOGANEICorp.＊＊○Yoshinari
FUKADA＊、＊＊,Takashi
YASUKAWA＊＊,Kyoko
YATSUZUKA＊

An AC corona discharge ionizer is one of the most useful equipment to eliminatestatic charge
on electronic devices. This paper represents the measurements of the positive and negativeions transferred by an AC corona discharge ionizer by faraday cage in which a rod electrode isinserted to form a deflecting electric field. We succeeded in the separation of the positive andnegative ions by applying the voltage on the rod electrode. With increase of the voltage of therod electrode, the ion currents of the same polarity of the rod increased, while the ion currentsof the opposite polarity decreased. Positive ions has the larger ioncurrent and ion generation
time than negative ions does. Negative ions are easier to be affected by the electric field thanpositive ions are. In addition, theinfluence of the electric field examined analytically to show
good agreement ofthe experimental results and analysis.

18pD-7 Static electricity neutralizing NISSAN MOTOR
Takayuki Fuwa＊、 People often feel discomfort when entering or exiting a vehicle because of a static electric
shock. In the electronics industry, ionizers have been developed to prevent electrostatic
system of the human body in CO., LTD＊、〇Yasuhikoa Vehicle
MURATA MFG CO., Shimanaka＊＊、 discharges and contamination sticking around or on circuit omponents. Ionizers incorporate
Shinji Kato＊＊
corona discharge principles to neutralize the static electric field. Using this idea, we developedLTD＊＊
an in-vehicle system to neutralize the human body charge. To accomplish this, the mechanism
by which the human body attains a charge when exiting a vehicle was first defined. That
definition was then used to determine the design characteristics of the system.

18aC-1 Preparation of Transparent Oita University
Conductive Film forAll-SolidEC device by Pulsed Laser
Deposition Method

Yuki Torii, Syuichi Development of All-solid electrochromic (EC) device is our target. All-solid electrochromic
Akamine,(EC) device is made already in our laboratory, however, it is very important to find preparing
Toshikazu Ohkubo condition of Pulsed Laser Deposition (PLD) method in order to get be

18aC-2 Drift-suppression of
Graduate school of
Pesticide Droplets by Using Tottori University
Electrostatic Pesticide
Spraying and Grounded
Conducting Net

Ryo NISHIMURA,
Yoshifumi
HASHIMOTO,
KatsumiNISHIMORI,
Naganori
ISHIHARA

It is well known that electrostatic pesticide spraying (EPS) is effective to improve the adhesion
performance of pesticide to agricultural crops. On May 29, 2006 the Ministry of Health, Labourand Welfare introduced the positive list system for agricultural hemicals remaining in foods.
The system prohibits the distribution of foods that contain agricultural chemicals, such as
pesticides, above a certain level if maximum residue limits have not been established. Becauseof this, pesticides should be sprayed only on the target plants. Also, the drifting pesticide
particles should be shielded not to reach the other plants. In this paper, we show that charged
droplets can be shielded by using grounded conducting net. EPS is also effective to prevent
drift hazard of pesticides.

18aC-3 Experiments on Electrostatic Graduate school of
Pesticide Spraying to
Tottori University
Japanese Pear (Pyrus
pyrifolia) Trees in Orchard

Yoshifumi
HASHIMOTO

In this paper, we report on the results of basic experiments on electrostatic pesticide spraying(EPS) at an orchard of Tottori University. We assembled a prototype sprayer for EPS using a
two-stroke-engine-driven sprayer. By using this sprayer, the effectiveness of EPS is examinedby spraying solution of edible red dye in water to test trees. The test trees used for thisexperiment are seven-year-old Japanese pear (Zuisyu) trees which are cultivated in agreenhouse. It is shown that the amount of adhered water droplets (pesticide) is increased by
17% by applying -38 kVDC to a nozzle of the sprayer. Also,we carried out this EPS experimentblowing air from behind the nozzle aiming to improve the adhesion performance.

18aC-4 Uniformity of Coating
Thickness in the Atomized
Electrostatic Powder
Coating and its Testing
Method*Zao Electrostatic
System Laboratory,** Owell Co., *** I. P.
D., Inc.,

Mitsuru MATSUI*1, In the atomized powder coating (APC) system the agglomerated particles contained in paint
Hirofumi
powders are pulverized with an atomizing unit. The pulverizing effects various merits to the
KOYAMA*2 andsystem, such as increasing the charge density of powder particles sprayed from the gun,
Tsutomu ITO*3
realizing the powder mass flow rate sensor, improvement of the transfer efficiency and, etc. In
this paper an improvement of the uniformity of coating thickness is described and its testingprocedure is discussed. High speed spraying of highly charged powders not only penetrates thepowders to the recessed area but also prevents to yield the over-deposition of powders on thefringe area of the object. Therefore the uniformity of the coating thickness is improved
considerably. In the experiment using a flat test object, size of 400×600 mm, the average valueof the coating thickness measured at the 25 points on the surface of the object and thestandard deviation (std) of them were obtained as 88.0 mm and 5.8, respectively. Comparedwith the measured values by the conventional system, the coating thickness has increased
27 percent and the std has improved by 4.7.

18aC-5 Effect of WO3 Film
Preparation Condition by
Pulsed Laser Deposition
Method on Electrochromic
Coloring Characteristics

University of Oita

Hideki Masudome， We are developing all-solid thin display devices using WO3 electrochromic thin film by Pulsed
Yuki Torii，Syuichi Laser Deposition (PLD) method. To optimize preparation condition of WO3 thin film, such as
Akamine，oxygen pressure and spacing between target and substrate, electrochrom
Toshikazu Ohkubo

18aC-6 Preparation of LSGMCO* Department of
Seiji Kanazawa*,
The LSGMCO thin films were prepared on the several kinds of substrates by KrF excimer
Films by PLD Technique and Electrical andSyouji Matsunaga*, pulsed laser deposition technique. The structural and electrical properties of the LSGMCO
its Application for FuelElectronic
Shuichi Akamine*, films were investigated for various deposition conditions. Next, a new-type planar fuel cell
Cells
Engineering, Oita
Toshikazu(single-chamber SOFC with methane-air mixture) where the electrodes were deposited on the
University **OHKUBO* Fumiaki surface of LSGMCO film was prepared and evaluated its performance. The V-I characteristics
Kumamoto University Mitsugi**of the cell was measured and the feasibility ofthin film SOFC using a simple electrode configuration onto the electrolyte film was confirmed.
18aC-7 Ion irradiation electronic
paper printing system

Kobayashi Create
Co.,Ltd

Noriaki Nimi

We are developing a novel electronic paper printer that uses the small ion irradiation head. The
method of ion electrical discharge is controlled by the heating of electrodes applied highvoltage on it,and a voltage necessary for the control is ５v. Ｆｕｒｔｈｅｒ this newly developed ion
irradiation head causes electrostatic latent image on films.

18aC-8 EHD effect in a symmetrical Faculty ofcylindrical-cylindricalEngineering,
electrode system with
Yamagata University
insulating film coating

Shunsuke
Shimoyama

We have investigated on the EHD effect in a cylindrical-cylindrical electrode system. Though it
is said that the EHD effect did not happen in the electrode system which formed symmetricelectric field distribution, we got a remarkable EHD effect in a such symmetric electrodesystem. It seems that an imbalance space charge distributions vicinity of electrodes are taking
place to drive the fluid. In this study the insulating film coating is involved in order to make an
imbalance space charge distributions around the electrodes, allowing the charge exchange
reaction rate decreased. The EHD effect with the insulating film coating is larger than thatwithout the film, and the current with the film is also larger than that without the film against
our expectation. We proposed the explanation with the imbalance space charge distribution
based on the difference of the charge exchange rates at the electrodes. We also proposed amodel for the mechanism of formation of the imbalance space charge distribution in consideringof the electrical potential of the tube wall.
Those models give a good explanation of our experimental results.

18pC-1 Fabrication of Electrode
Ribbons of a Stacked-type
Electrostatic ActuatorTokyo Institute ofTechnology○Kenichi
FUJIKAWA,
Ryosuke
WATANUKI,
Koshuke
YAMAMOTO, Keiji
SANEYOSHIWe are studying a stacked-type electrostatic actuator aiming to make an artificial muscle. The
force of the actuator is in inverse proportion to the square of the gap length between
electrodes, so we have to miniaturize the actuator to generate large force. However, it isdifficult to make the small sized electrode ribbon which is a main component of the actuator. In
this paper, we report a new method for fabricating small sized electrode ribbon using
photolithography and etching process which is used in microfabrication. This method is suitable
for miniaturization of the actuator and mass production.

18pC-2 Basic study of sterilization
technique at low discharge
voltage by using
Microplasma(Ⅱ)

Innovation and Joint
Research Center,Shizuoka University○Masahiro
YAMADA, Marius
BLAJAN and
Kazuo SHIMIZU

Sterilization of micro-organism, such as Escherichia coli, is experimentally investigated byusing microplasma. Microplasma is suitable for practical application for sterilization, since its
discharge voltage is low and its apparatus could be small and inexpensive. In this study, Gramnegative Escherichia coli HB101 and Gram-positive Bacillus subtilis JCB20036 are used as thetarget to be sterilized. From the series of experiments, decrease in the amount of germs iseffectively obtained after microplasma treatment. In addition, the effect of sterilization
increases as the discharge voltage increases. When nitrogen is used as carrier gas, the effectof sterilization was obtained although ozone is not generated during the discharge. The
sterilization rate of E. coli is better than that of B. subtilis when both air and nitrogen are used
as carrier gas.

18pC-3

Inactivation of E.coli using Department of○Naoto FUJII,
Ar／Ar+H2O Plasma Torch Ecological
TomokoEngineering,
NAKAJIMA，Toyohashi University Hachiroof Technology
YASUDA,Kazunori
TAKASHIMA andAkira MIZUNO

18pC-4 Fundamental Investigation on Tokyo Metropolitan
Sterilization of Bacteria by Univ.
Pulsed Electric Field with
Dielectrophoresis in Microgap Reactor

18pC-5 Numerical Investigation ofTokyo Metropolitan
Bacterial Capture Region in Univ.
a Dielectrophoretic
Microfilter

18pC-6 Extraction of λDNA by
Electro-blotting

Atsuto Tsukutani,
Satoshi Uchida,
Fumiyoshi
Tochikubo

A plasma torch with inert gas is chemically-activated low temperature plasma. Recently, it hasreceived a lot of attention for application to plasma processing or medical field. However, theplasma can’t produce much oxidative species compared with Dielectric Barrier Discharge. It
suggests that solve this issue if we can use an OH radical with the strongest oxidation power in
active oxygen and plasma torch. In this study, the effect for E.coli inactivation investigatesusing Ar/Ar+H2O plasma torch was studied. Argon gas was moisturized by bubbling in ionexchanged water. Dissociated water molecules in discharge space of the plasma torch generate
OH radical. In addition, we measured the light emission of the plasma to understandcharacteristics of the discharge. The spectrum of OH radical both in the Ar and Ar+H2O plasma
torch was observed. It was suggested that Ar+H2O plasma torch was effective in inactivation ofE.coli on Petri dishes.
Pulsed electric field sterilization is an appropriate treatment for fresh foods and medicines.
However, this method has disadvantages that the energy efficiency is not high enough and highvoltage is required for the sterilization. In the present work, we developed a micro-gap reactor
with dielectrophoretic system to improve the energy efficiency. In addition, basic properties of
the reactor were investigated. The voltage required for the sterilization was reduced. We
confirmed effects of bacterial concentration by dielctrophoresis and pulsed electric fieldsterilization in the reactor. Consequently, further effective pulsed electric field sterilization canbe expected with combination of dielectrophoretic concentration.

Shintaro
Dielectrophoretic devices are powerful equipment in bioscience and bioengineering, since the
IMAFUKU，Satoshi electrostatic force is dominant for behavior of bioparticles in micro space. Numerical simulation
UCHIDA andof dielectrophoresis in micro region is essential for futher improvement of the devices. In the
Fumiyoshi
present work, we modeled the capture region of bacteria in dielectrophoretic microfilter and
TOCHIKUBO
analyzed the behavior of single Eschericia coli numerically. If a flow rate is rised from 6.0 ml/h
to 60 ml/h, the capture region reduced to 50% at a maximum. If voltage is rised from 5 V to 10
V, the capture region became 50% at a maximum. Therefore change of flow rate and voltage
extremely the change in the capture region. The capture region is narrow on the right ofelectrode and large on outer edge of electrode. This result suggests that control of theoperating parameter and adjustment of electrode configuration are effective for optimization
design of microfilter.
Department of
Mai HASHIMOTO, Fundamental study on high speed detection of bio-particles (BPs) in air was carried out. Fine
Ecological
Hachiro YASUDA, particles in air were sampled on a collection plate effectively using electrostatic precipitation.
Engineering,
HirofumiCollected particles were exposed to barrier discharge to destroy the cell and to obtain cell
Toyohashi University KURITA,Kazunori lysates. In situ electrophoresis in agarose gel and membrane filtering were examined toof Technology
TAKASHIMA and separate the DNA from the other substances in the lysates. Transferred DNA was stained with
Akira MIZUNO
fluorescent dye for microscopic observation. In this experimental condition, majority of the
DNA can be transferred through the thin agarose gel layer by using electro-blotting. From theexperimental results, detection of bio-particles will be possible in the short time.

18pC-7 Investigation ofTokyo Metropolitan
Dielectrophoretic Effect for Univ
microorganism in chemicalsolvents○ Kunihiko
SHIBATA, Satoshi
UCHIDA andFumiyoshi
TOCHIKUBO

The development of new measurement system of drug-resistant strain of bacteria is essential
for online manufacturing processes in food and chemical industries. In the present work, we
proposed a dielectrophoretic method with fluorescence analysis to evaluate the distribution andconcentration of bacteria in emulsion and investigated dielectrophoretic effect for bacteria withmicro electrode array. The optimal frequency at maximum trapping speed and volume was 100
kHz in the case of a medium conductivity of 0.655 mS/m. Positive dielectrophoresis wasattenuated remarkably with a decrease in Clausius-Mossotti factor below 10 kHz or above 3
MHz. In addition, the spatio-temporal distributions of trapping bacteria and suspension colloids
in the emulsion were observed. These results suggest that the present method should be usefulfor quantitative estimation for bacteria in general chemical solvent.

18aB-1 Electrostatic regeneration of *Asada Corporation 〇Makoto OHNO*, An experimental apparatus has been built for recycling fluorocarbons using electrostatic
fluorocarbons for recycle or ** National Institutes Taizo ONO** ,separation of contaminated oil mists. Oil mists are charged by tribo-charging, and separated
improvement of efficiency
of Advanced
Akira MIZUNO*** using parallel electrode with dc electric field. The tribo-charging of the oil mists by the metal
Industrial Science andneedle valve is about 50 times larger than that by Teflon tube. The results indicate that theTechnology
apparatus can regenerate contaminated fluorocarbons nearly to their initial quality with the***Toyohashi
applied voltage of 600 V. With this regeneration, destruction of contaminated CFCs can be
University of
avoided in many cases, and efficiency of air conditioning system can be improved, resulting inTechnology
reduction of CO2 emission.
18aB-2 Electrohydrodynamically* Department ofT. Yamamoto*, T.
Assisted Electrostatic
Electrical andAbe*, T. Mimura*,
Precipitator for Collection of Electronics
Y. Ito*, N. Otsuka*,
Low Resistive Diesel
Engineering, Musashi Y. Ehara*, and A.
Particulates
Institute ofZukeran**Technology ** Road
Systems Engineering
Department, Fuji
Electric Systems Co.
Ltd.1 Fiji-machi, HinoCity,
18aB-3 Observation of Plasma
National Institute of ○ Kunihiko
In this work, optical microscope-image intensifier-CCD camera system was used to observe
Generation on the Surface Advanced Industrial SHIBATA, Satoshi the discharge plasma on the surface of catalyst. Various metals (Ag, Zr, Cu etc) were loadedof Catalyst Using
Science and
UCHIDA andon TiO2 and various zeolites with different loading amount. It was found that the shape ofMicroscope-Image
Technology (AIST)
Fumiyoshi
discharge plasma was greatly influenced by the presence of loaded metals on the surface ofIntensifier-CCD Camera
TOCHIKUBO
catalyst. For all catalysts tested in this work, the area of plasma expanded over wide range
than the bare catalyst. The difference in the shape of discharge plasma was also found to becorrelated to the performance of plasma-catalyst reactor for the decomposition of VOC.
18aB-4 Inactivation of E.coli using Ar Department of
Adrian／Ar+H2O Plasma Torch
Ecological
MIHALCIOIU,Engineering,
Selma Mededovic
Toyohashi University THAGARD,
of Technology
Kazunori
TAKASHIMA andAkira MIZUNO

Compact, energy efficient systems for ammonia generation at low temperature are needed forthe next generation of SCR systems used for diesel exhaust treatment in mobile applications. A
novel non-thermal plasma electrode transforming solid urea into ammonia can be used ininstant on like SCR systems effective at engine startup low temperatures. A neon transformer
is used to power the DBD reactor. Decomposition of dry and wet urea under dry and humid
airflow is evaluated. Temperature on the electrode surface is correlated with ammonia
production

18aB-5 Decomposition of Adsorbed
Xylene on Adsorbent Using
Nonthermal Plasma and Gas
Circulation*Osaka Prefecture○ Tomoyuki
The xylene decomposition system which consists of adsorption process by adsorbents andUniversity, **Musashi KUROKI*, Kiyoyuki adsorbed xylene decomposition process using nonthermal plasma with gas circulation is
Institute of
HIRAI*, Masaaki
investigated. The ac 60 Hz and 20 kHz high voltage power supplies are employed for nonthermalTechnology
OKUBO* andplasma generation. After xylene mixture which consists of o-, m- and p-xylene is adsorbed by
Toshiakiadsorbent for 130 min, nonthermal plasma is generated in order to decompose adsorbed xylene
YAMAMOTO**
with gas circulation. As a result, the conversion ratios of adsorbed xylene to CO and CO2 (ηCOx) of 69 and 48% are obtained by ac 60 Hz plasma for 90 min and ac 20 kHz plasma for 75
min. Ac 20 kHz plasma is unstable and generates NOx as byproduct. From FTIR analysis of
exhaust gas after treatment, it is clarified that N2O is generated by ac 60 Hz plasma

18aB-6 Characteristics of Ozone
Oita university
Generation and Toluene
Decomposition for Negative
Spread Corona Discharge

Tomofumi Arita,
Various types of non-thermal atmospheric discharge plasma have been studied its applicability
Syuichi Akamine, to air pollution control. DC positive streamer coronas are used for treatment of NOx and VOCs,
Toshikazu Ohkubo while negative coronas are mainly used for particle charging but not for air pollution control
usually. In this paper, effects of DC negative coronas on ozone generation and toluene
decomposition are studied by using sharp discharging electrodes in needle-to-mesh electrodesystem. Especially, our main interests is on the effects of "negative spread corona discharge"
on VOC abatement, which is widely spread negative corona extending from discharging
electrode to plate electrode, named in our laboratory, The corona discharge characteristics,
ozone generation and toluene decomposition characteristics of DC negative spread corona
discharge are studied experimentally using plasma reactor combined with deodorizing catalyst.

18aB-7 Behavior of Toluene
National Institute ofAdsorbed into Internal
Advanced Industrial
Micro-Space of Zeolite with Science andOzone - Studies of Chemical Technology (AIST)
Species on Solid Surface byInfrared Spectroscopy

Atsushi OGATA,
Hiroshi IZUMI,Hyun-Ha KIM,
Masami
SUGASAWA, andHisahiro EINAGAThe enhancement effect for toluene decomposition is greatly different by types of zeolites inthe zeolite-hybrid plasma reactor. It has been already known that ozone played an importantrole in this effect. However, zeolites as an adsorbent do not have the ability of ozone
decomposition into the formation of active oxygen species for toluene decomposition. In thiswork, we investigated the behavior of toluene molecule adsorbed on HY zeolite in the presenceof ozone by an FT-IR method. It was found that toluene adsorbed on the zeolite decomposed
into acids by ozone directly, whereas toluene in gas phase do not react at all with ozone at low
temperature. Toluene adsorbed on zeolites is interacting with the solid surface and changing
electron density in its skeleton, resulting in the decomposition of toluene by gas phase ozone
easily.

18pB-1 Basic Study on Treatment of Innovation and Joint
Indoor Air Pollutants by
Research Center,
Microplasma (II)Shizuoka University○Masaki
KANAMORI ,Marius BLAJAN ,Kazuo SHIMIZU

Removal of formaldehyde by using microplasma is investigated. Microplasma is occurred with apair of electrodes, covered with dielectric barrier, at a relatively low discharge voltage ofaround 1kV, and has an advantage of reducing the power and downsizing the entire plasma
system. In this paper, electric characteristics and ozone generation are obtained. Related tothis, the temperature effect by the microplasma electrode is investigated by a thermographcamera. In order to investigate the advantage of the microplasma electrode, removal of very
low concentration formaldehyde with different air flow rates are carried out. For more
observation, formaldehyde treatments with existence/inexistence of humidity are investigatedby the HPLC, to obtain the effect of OH radicals in the plasma chemical reaction. With thismicroplasma electrode, formaldehyde could be purified with low discharge voltage and power,
while ozone and NOx generation are near zero.In addition, byproduct analysis is confirmed byusing the FT-IR. When there is no humidity in the flowing air, CO2, CO, and N2O are the major
byproducts of the microplasma treatment.
On the other hand, when there is humidity in the flowing air, the byproducts change to
CO, N2O, and HCOOH

18pB-2 Improvement of CatalystHybrid Plasma Reactors for
VOC decomposition -For
Best Combination with
Ozone Decomposition
Catalyst -National Institute ofAdvanced Industrial
Science andTechnology (AIST)

18pB-3 Economical VOC removalusing adsorption/thermal
desorptionand surface
discharge

Musashi Institute ofTechnology

19aA-1 Observation of Electrostatic Department of
Agglomeration in Liquid
Electrical andElectronic
Engineering, Oita
University

19aA-2 Emission spectrum ofhoneycomb discharge

Atsushi OGATA,
Keiichi SAITO,
Hyun-Ha KIM,
Masami
SUGASAWA,
Hirofumi ARITANI,
and Hisahiro
EINAGAThe enhancement effect for toluene decomposition is greatly different by types of zeolites inthe zeolite-hybrid plasma reactor. It has been already known that ozone played an importantrole in this effect. However, zeolites as an adsorbent do not have the ability of ozone
decomposition into the formation of active oxygen species for toluene decomposition. In thiswork, we investigated the behavior of toluene molecule adsorbed on HY zeolite in the presenceof ozone by an FT-IR method. It was found that toluene adsorbed on the zeolite decomposed
into acids by ozone directly, whereas toluene in gas phase do not react at all with ozone at low
temperature. Toluene adsorbed on zeolites is interacting with the solid surface and changing
electron density in its skeleton, resulting in the decomposition of toluene by gas phase ozone
easily.
Yujiro Oishi,
Volatile organic compounds (VOCs) in exhaust gas from various industries generated from
Yoshiyasu Ehara, painting and printing processes have focused attention for serious environmental problems.
Toshiaki Yamamoto Therefore, VOCs must be removed before discharged into atmosphere. However, it isineffective and not economical to treat a low concentration VOCs by the conventional
technologies. For these reasons, gas treatment system combined with the gas concentration
technique using thermal desorption was investigated. Toluene, which is one of the mostfrequently used VOCs, was used and the optimization of thermal desorption combined withsurface discharge was investigated. 400ppm of toluene was concentrated more that 9,000ppm(more than 20 times) with the flow rate of 1/20, resulting in the compact plasma reactor.

Yoshinori KONDO, The process of the electrostatic agglomeration in liquid can be used in the separation of mixing
Shuichi AKAMINE, liquid, fine particle production, and etc. In this study, the oppositely charged water droplets
Seiji KANAZAWA were created in oil phase using the DC atomization in the dripping mode and the behavior ofthe droplets with opposite charges was observed. The trajectory of charged water droplet
under the influence of electrical forces was also visualized. As a result, it is found that theagglomeration between the initial droplets takes place at first stage and then another droplet
plunges into the coagulated droplet, becoming larger droplets. Therefore, the volume of thedroplet gradually increases and finally settles down onto the bottom of the reactor after theseveral times of the agglomeration.
**Fakulta○Satoshi SATO*, Selectivity and energy efficiency of plasma chemical processes can be improved significantly ifmatematiky, fyziky a Karol HENSEL**, plasma is combined with a catalyst. Generation of stable discharge plasma inside narrow
informatiky, Univerzita Hiroki
capillaries of honeycomb catalyst for automobile exhaust after treatment, however, has been
Komenskeho,
YAMAUCHI*,Kazun quite difficult. The paper presents a method to generate discharge inside honeycomb. The
ori TAKASHIMA* method uses a packed-bed discharge connected in series with honeycomb capillaries. With aand AkiraDC voltage across the capillaries, streamers are extended from the packed-bed discharge into
MIZUNO*the capillaries. With this method, ionization can be made inside fine channels of honeycomb
catalyst made of insulating materials. This discharge is designated as “honeycomb discharge”.
Electrical and optical characteristics of the honeycomb discharge generated inside a bundle ofquartz capillaries were measured. Effects of the applied voltage and power, diameter of thecapillaries, and composition of the gas mixture passed through the capillaries on the emission
spectra of the honeycomb discharge are presented.

19aA-3 Measurement of Emission
Spectrum of N2 in
Microplasma Discharge

Innovation and Joint
Research Center,Shizuoka University

19aA-4 Channel Length andLuminous Area ofElectrostatic Discharge
Occurring between a
Charged Particle Cloud anda Grounded Electrode.

Graduate School of
Sience andEngineering,
Yamagata University

19aA-5 Electrostatic Measurementof Atmospheric Air

Department of
Akira Mizuno
EcologicalEngineering,
Toyohashi Universityof Technology

19pA-1 Effect of flocking bands on Yamagata University
insulation characteristics ofpolluted silicone rubber〇Tatsuya ISHII,
Marius BLAJAN,
Kazuo SHIMIZU

Characteristics of microplasma i.e. effect of electric field, electron energy, generation ofradicals are not well investigated compared to the other non thermal plasma, since it’s study
has been just begin. It is important to investigate such characteristics to obtain an efficientelectrical discharge or improving the chemical reaction in the microplasma.In this paper,
characteristics of atmospheric pressure microplasma, are investigated by optical emission
spectroscopy (OES) method. Also electric characteristics such as discharge voltage, discharge
current and discharge power are measured. An experimental Marx Generator with MOSFET
switches is used to generate output voltages of up to -1.8kV, with a frequency of 1 kHz. The
discharge power increases with the increase of the discharge voltage and with the increase of
its frequency. Emission spectrum of microplasma discharge in N2 are observed by aspectrometer with ICCD camera. Emission from N2 second positive band was confirmed, andthe emission spectrum was extinguished within 150 nanoseconds. By increasing the discharge
voltage, increase of the emission intensity of N2
Masaaki ENDO,
To understand characteristics of electrostatic discharges occurring between a charged
Kenji TOKI, Yoshio particle cloud and a grounded spherical electrode, the charged particle cloud was formed by
HIGASHIYAMA
powder particles. Negatively charged particles by plused corona discharge were ejected upwardwith angle of 45 degree. A divided spherical electrode with 105 mm diameter consisting ofupper and lower electrode was set at the outside of the charged particle cloud. Discharge
channel between the electrode and the charged cloud was taken by CCD video camera via an
image intensifier, and discharge current was measured by a digital oscilloscope. The discharge
channels contain a number of luminous branches. When the applied voltage to the corona
charger was increased from 16 to 25 kV, the average length of discharge channel increased
from 280 to 390 mm, respectively. The total luminous area consisting of discharge channels wasincreased with the applied voltage. The charge quantity neutralized by a single discharge eventstrongly related to the discharge luminous area.
Using an electrode set on roof of a building, electrostatic measurement of atmospheric air has
been made. The electrode is connected to an electro-meter through 10 m coaxitial cable.
Area of the electrode is 100 cm2, and supported by an insulator. This electrode serves as acapacitor, and the electrometer measures the voltage generated between the electrode and theground. Time constant of the voltage measurement was about 3 h. The system measuressudden change of outside electric field. At the meantime, the system measures the voltagechange due to the ionic flow from outside to the electrode. The measured data for about 1
month are shown in this paper.

Toshiyuki Sugimoto Effect of flocking bands on insulation characteristics of sea water polluted silicone rubber has
been investigated experimentally. Silicone rubber (SiR) is hydrophobic material recently used
for insulators of power delivery. Because its hydrophobic surface merely forms water
conducting path, the water polluted SiR surface has withstand voltage higher than ceramic
surface. However, partial or corona discharges often triggered from water droplets deformed byan electric field, it is important to suppress the water triggered discharge. This paper presents
the effect of flocking band on SiR surface to suppress the water triggered discharge.
Alternating hydrophilic band/hydrophobic band are made using an electrostatic flocking
treatment. It was found that the flocking band effectively absorb water from the SiR bands,
resulting in withstand voltage twice as much as virgin SiR.

19pA-2 Fundamental Processes ofCorona Discharge -Surface
analysis of traces stainedwith discharge on brass
plate in negative corona-

19pA-3 Electric Tree Initiation in
LDPE Nanocomposite of
Al2O3 Nano-particles andMetal Phthalocyanine

Internaional Graduate Kanako Sekimoto
School of Arts andand Mitsuo
Sciences, Yokohama Takayama
City Univerisity

The surface profile and chemical components of the trace stained with negative corona
discharge on the brass plate have been analyzed with surface profiler and laser
desorption/ionization mass spectrometry, respectively. The trace pattern was made up of
several concentric circles and the pattern seemed to reflect the distribution of inhomogeneouselectric field strength between point-to-plane electrodes. The surface profile of the trace
showed a concave pattern like a crater. Abundant NOx- and their complexes with Cu wereobserved in the center region of the crater, while abundant carbon cluster ions Cn- (n=2-10)
and NOx- related ions were observed in the rim region of the crater. The results obtained
indicated that NOx- ions were mainly produced on the field line arising from the needle tip apex
with high electric field strength, while the periphery of the needle tip with lower field strength
resulted in the carbon cluster ions.
Faculty of Education, Yoshiaki Yamano Tree initiation voltages (TIVs) for LDPE nano-composites were studied under ac voltage
Chiba University
and Masaaki Iizuka application. The studied LDPE composites contained Al2O3 nano-particles and metal
phthalocyanine (M_Pc) with the concentration ranges of 1 - 5wt% and 0.5 - 3wt%, respec

19pA-4 Raman Measurement of the The University ofMain Molecular Density inTokyo
Spark Ignited Hydrogen-Air
MixtureAkihiro MAEKAWA, Hydrogen is ignited easily by electrical static discharge. The clarification of the ignition
Ryo ONO andmechanism is important to prevent the ignition beforehand. Molecular behavior is thought to be
Tetsuji ODA
very important in ignition process.The main molecules’behavior in spark ignited Hydrogen-Air
mixture can be observed by using Raman spectroscopy. In this research, Raman measurementin spark ignited Hydrogen-Air mixture was performed for the first time in the world.

19pA-5 Electrostatic Charging of
Department of
Human Body during Walking EcologicalEngineering,
Toyohashi Universityof Technology

Tamae Mizuno,
Kazunori
Takashima andAkira Mizuno

The voltage of human during walking due to electrostatic charging has been measured. A metal
mesh electrode was set on ceiling of a room. When human is walking under the electrode, avoltage is induced to the electrode due to movement of charged human body. Change ofcharge of human body also induces voltage. The induced charge is dependent of material ofshoes, as expected, and in average, the value is a few hundreds volt. The induced voltage may
cause enhancement of attachment of suspended particles in air. It should be added that themonitoring method is simple, and can be used to monitor safety against electrostatic hazard
and so on.

19aC-1 Generation and*Tohoku Univ.,transportation mechanism of **Tohoku Univ.
chemically active species for (Presently, Isuzu
a post discharge flow inMotors)，***Adtec
atmospheric air
Plasma Technology

Takehiko Sato,**Osamu Furuya,***Takuya
UrayamaA low-temperature argon plasma flow in atmospheric air has been investigated to clarify
generation and transportation of chemically active species which result in inactivation ofbacteria. The flow which has the ultra-weak emission as 10-5 - 10-9 times as emission fromthe quartz tube can be visualized using an optical analysis system realized by developing areflection reduction box. The ArI, N2 second positive system and OH were mainly observed by
the spectrum analysis. The flow which is toward upstream around the nozzle is observed byprofiles of temperature and velocity obtained using computational method. This implies thatchemically active species which has inactivation effect are not mainly transported to bacteria
by the flow since most of generated reactive species might be transported upstream by theflow.

19aC-2 Protein decomposition bypulsed discharge plasma inwater

Dept. Chemical andEnvironmental Eng.,
Gunma University

Takayuki
OHSHIMA, Taiki
HIRINO, Yoshiyuki
SHIBATA, Yuko
HASEGAWA, andMasayuki SATO

A wastewater from home is one of the pollutants in our circumstance. These wastewaters
consist of various organic compounds such as lipid, protein, and detergent, and thesecompounds should be decomposed in wastewater treatment. We have studied the generation ofpulsed discharge plasma in water and some AOPs for wastewater treatment. In this study, wedemonstrated the decomposition of soluble proteins by pulsed discharge plasma in water.
Microbubbles generated by SPG (Shirasu Porous Glass) filter was introduced into the plasma
reactor to facilitate the discharge plasma generation. When albumin (0.1 mg/mL) was used as
the model protein, 90 % was achieved within the treatment time of 60 min with the applied
voltage of 14 kV. We also tried to decompose milk protein with the same system. Although thesignificant decomposition of the proteins in non-diluted milk was not confirmed, apparent
decomposition of milk proteins was observed by SDS-PAGE analysis after 250 times of dilutionof sample milk. The applied voltage, which affected the frequency of plasma generation, wasalso influenced the decomposition ratio of milk proteins, and higher voltage resulted in thehigher decomposition ratio. These results confirmed thatthe soluble protein could be decomposed by pulsed discharge plasma in water.

19aC-3 Basic study of Liquid
purification of water at low
voltage discharge (Ⅱ)

Innovation and Joint
Research Center,Shizuoka University○Shuichi
MURAMATSU,
Tomonori
SONODA, Marius
BLAJAN, andKazuo SHIMIZU

Effective use of water resource is required by a global increase in population and industrial
development. Water treatment is experimentally investigated by using low voltage discharge
below 10kV. Low voltage discharge in the water is suitable for practical application of water
treatment, since its apparatus could be small, inexpensive, and has low power consumption. In
order to apply voltage to the reactor, pulse circuit with spark gap is used. Decolorization ofindigo carmine solution is carried out to investigate the feasiblty of low voltage discharge in thewater. Air and nitrogen is used as carrier gases to produce bubbles in the water. As a result,indigo carmine solution is decolorized, although the discharge voltage is less than 10kV. When
air is used, treatment efficiency of indigo carmine is higher than that of using nitrogen.

19aC-4 The effect of spraying ofwater droplets and locationof water droplets on thewater treatment by pulsed
discharge in air

Yamagata University○Tsutomu
Kobayashi Taiki
Handa Yasusi
Minamitani
Yousuke Tashima
Taisuke Nose

We studied the effect of spraying of water droplets and location of water droplets into
discharge area on water treatment by pulsed discharge in air. A solution of organic dye, indigo
carmine, was used for sample. Time spending for decolorization of water droplets including
indigo carmine was shorter than that into water flowing along the inner wall of a reactor. This
result shows spraying as water droplets into the discharge in air has efficacy for fastertreatment of water. The time spending for decolorization of water droplets including indigo
carmine was fastest at the location near the cylindrical electrode of the reactor.

19pB-1 The Effect of Discharge
Conditions on the OH-LIF
Measurement in
Atmospheric Pressure DC
Streamer Coronas

Department ofElectrical andElectronic
Engineering, Oita
University

Michihiko HIRAO

The LIF measurement of the hydroxyl (OH) radicals was performed in a nozzle-to-plateelectrode system during the steady-state positive DC streamer coronas. First, the twodimensional OH distribution in the DC corona discharge in N2/CO2 mixture was observed. The
ground-state OH radicals were generated and stayed mainly in the region of the streamer
propagation. Next, the effects of the humidity and NO concentration in the reactor on thespatial distribution of OH radicals were investigated. It was found that OH-LIF signals increase
with increasing the humidity under the stable discharge operation. While OH-LIF intensities
decreases with increasing the amount of NO due to the OH radical consumption for thechemical reactions.

19pB-2 Basic Characteristics ofDielectric Barrier
DischargeUsing Anodic
Porous Alumina as Barriers

Department ofElectrical andElectronic
Engineering, Nippon
Bunri University

19pB-3 Measurement of Metastable The University ofN2(A) in AtmosphericTokyo
Pressure Pulsed Corona
Discharge Using LIF○Toshiyuki
The dielectric barrier discharge (DBD) skillfully combined with (porous) ceramics and/or
Kawasaki, Takanori catalysts has been investigated as the technologies for gas control such as harmful gas
Kuriaki, Nobuyuki treatment and high-efficiency ozone generation. In this study, the anodic porous alumina,
Takahama,Kazuhid which have many pores with nanometer-order diameter and high aspect ratio, has been focusede Noguchi, Yu
as the barrier of a DBD reactor. The anodic porous alumina will significantly improve the DBD
Jieming, Geng
reactor. However, the influences of the anodic porous alumina on the discharge generation
Siyuan and Lee
and gas phase reactions have not been systematically studied. In this paper, the plane-toSunku
plane type multilayer DBD generation using the anodic porous alumina barriers was tested in
atmospheric pressure air for future development. The basic NOx removal and generation
characteristics in air were also studied, and compared with that of a typical DBD in order toclarify the influence of the anodic porous alumina on them.
Yoshiyuki
Teramoto, Ryo
Ono, and Tetsuji
Oda

Relative density and spatial distribution of metastables are measured in pulsed positive corona
discharge using LIF under atmospheric pressure. The vibrationally ground state is excited to ,then the fluorescence form to is detected. The discharge occurs within a 12 mm point toplane gap in nitrogen. Spatial distribution of density shows that is mainly produced in the
primary streamer channel, not in the secondary one. Decay rare of density after discharge
near the point anode is faster than that in the rest of the discharge volume away from the point
anode.

19pC-1 Metal Plating for＊Osaka Prefecture ○Masaaki OKUBO A low-environmental load surface modification technique for plating the fluorocarbon polymers
Fluorocarbon Polymer Films University, ＊＊＊, Mitsuru
films is developed using an atmospheric-pressure argon and acrylic acid vapor nonthermal
Using Atmospheric-Pressure Technology Research TAHARA＊＊,
plasma graft polymerization. The results of the T-type peeling test show that the peeling
Nonthermal Plasma Graft
Institute of Osaka
Tomoyuki KUROKI strength of copper plating on the treated PTFE (polytetrafluoroethylene) film is approximately
Polymerization
Prefecture＊ and Toshitomo 46 times greater than that on the untreated film. With scanning electron microscope analysis of
HIBINO＊the surface of the copper plating on the treated PTFE, it is confirmed that the hydrophilic
surface of the treated film contributes to uniform copper plating.
19pC-2 Development of Miniature
Bioelectrics Research Takahisa UENO,
Pulsed Power Generator for Center, Kumamoto
TakashiMicroplasma Applications
University
SAKUGAWA,
Sunao KATSUKI
and Hidenori
AKIYAMA

19pC-3 Film Thickness Measurement Oita University
by Spectrometer of WO3thin film for Electrochromic
DeviceRecently, the microplasma, which is small volume plasma, has been widely studied in the
research fields of small manufacturing, chemical analysis, short wavelength light source andplasma function device. In this work, the miniaturized Marx generators have been developed as
the microplasma generator. As the results, the breakdown phenomena of the bipolar junction
transistor (BJT) have been used as the closing switch of the miniaturized Marx generator andthe dual Marx generator, which has fast rise- and fall- time and variable pulse duration of theoutput voltage, has developed as the active control generator of the microplasma.

Yuki Torii, Syuichi All-solid electrochromic (EC) devices which consist of transparent conductive film,
Akamine,electrochromic thin film, solid electrolyte thin film are prepared by Pulsed Laser Deposition
Toshikazu Ohkubo (PLD) method in our laboratory. To make larger size of all-solid electrochromic device is a key
point in the study. In this paper, to make larger size WO3 thin film for EC device, the effects
oxygen concentration and spacing between target and substrate on the film thickness arestudied experimentally. The WO3 film thickness and the transmittance are measured by Peakvalley method using spectrometer. As a result, wide uniform WO3 electrochromic thin film canbe obtained by optimizing oxygen pressure and spacing between target and substrate. The
purity of raw oxygen gas to supply has also significant effects on WO3 thin film preparation.

19aB-1 Regeneration of Adsorbent
and NOx Reduction Using
Nonthermal Plasma Optimization of electrodefigure19aB-2 NOx Reduction for Boiler
Emission Using Pilot-Scale
Plasma-Chemical Hybrid
System19aB-3 Study of NOx Removal
Processes by Microplasma
Generation＊Department ofNoboru NAKAJO Comparison of performance among three types of nonthermal plasma reactors was carried out
Mechanical＊，Keiichiroin order to realize diesel emission control system using nitrogen nonthermal plasma desorption.
Engineerring, Osaka YOSHIDA＊＊，It was shown that helical wire〓cylinder reactor have higher regeneration efficiency than the
Prefecture
B.S. Rajanikanth＊ straight wire-cylinder reactor and pipe-cylinder reactor. It was clarified that the helical wireUniversity，＊＊JST ＊＊，Masaaki
cylinder reactor was the most effective reactor for regeneration of NO zeorite adsorbent of
Innovation PlazaOKUBO＊
molecular sieve 13X.
Osaka, Japan ScienceNOx removal from a smoke tube boiler flue gas was investigated using a commercial ozonizer＊Osaka Prefecture ○Hidekatsu
for indirect NO oxidation and a Na2SO3 chemical scrubber. The flue gas flow rate was in the
University，＊＊
FUJISHIMA＊,
Takao Iron Works Co., Tomoyuki KUROKI range of 410 ~ 1,480 Nm3/h, the gas temperature of 185 ~ 325 oC, and NOx concentration ofaround 40 ppm in city gas firing. Operational and performance data were obtained. The NOxLtd.，＊＊＊Musashi ＊, Keiichi
removal efficiency was clearly dependent on the ORP, and increased inversely as the oxidation
Institute of
OTSUKA＊＊,
Technology，＊＊＊ Atsumi TATSUMI reduction potential (ORP) in the liquid decreased. To keep the specified NOx removal
performance, it is essential to maintain the ORP properly by controlling additional Na2SO3 and＊Japan Science and ＊,Toshiaki
Technology Agency, YAMAMOTO＊＊ NaOH solution injection, and to keep the ORP of less than 0 mV and the ORP change rate ofless than 0 mV/min.
Innovation Plaza＊, Keiichiro
Osaka
YOSHIDA＊＊＊＊and Masaaki
OKUBO＊
Innovation and Joint Marius
BLAJAN,
Microplasma discharge at relatively low voltages and very small discharge gaps is analyzed.
Research Center,Shizuoka University

Masaki
KANAMORI, andKazuo SHIMIZU

The electrical characteristics of the microplasma electrodes and the small size of the supply
circuit show that this technology can be applied for NOx removal processes especially formobile exhaust gas sources. The effect of the discharge gas temperature and O2 amount in thegas composition are investigated. The electrode arrangement using a parallel connection allows
the treatment of different gas composition at different flow rates. The experimental results
show that with the increase of the discharge gas temperature the NOx removal efficiency
increases for the gas composition without O2. At higher gas temperatures the energy efficiencyof the NOx removal process is lower. By increasing the amount of O2 in the discharge gas theefficiency of the NOx removal process will decrease. Due to the destruction of O3 at higher
temperatures with the increase of gas temperature the NO removal efficiency in the presenceof O2 is decreasing and also fewer quantities of NO were oxidized to NO2. Higher NOx removal
efficiencies were obtained at lower concentrations of NO and lower gas flow rates.

19aB-4 Change in number density of Department ofHiroshi UMEMOTO, Particle matter (PM) can be removed from the diesel exhaust gas stream efficiently, by a diesel
PM by the exposure to
EcologicalKazunori
particulate filter (DPF). Removed particles from the gas stream can be oxidized at 600 degree
ozone
Engineering,
TAKASHIMA and C. However, heat stress occasionally breaks DPF, and low temperature oxidation below 200
Toyohashi University Akira MIZUNO
degree C is preferable. In our previous research, ozone could oxidize simulated carbon particleof Technology
at 200 degree C. However, oxidization of the small size PM that was not able to be removed
effectively enough by DPF had not been evaluated. The purpose of this study is to evaluateoxidization of such particles by measuring the number density of PM affected when ozone is
added to exhaust gas. Under no load condition of the diesel generator, the number density of
PM in the exhaust was affected by the ozone addition. The number of PM smaller than 30nm
decreased, and PM ranging from 30nm to 200nm in diameter increased. The result suggeststhat hydrocarbons, fine PMs and ozone play synergetic roles in generation of PMs with 30 –200nm diameter.

19pD-1 The Oscillation Component
on the Discharge Current of
ESD from Charged Metal
that Influences to its
Radiation Noise

Department of
Kentaro Kawasaki,
Electrical Engineering, Takahiro Yoshida,
Tokyo University of Noriaki Masui
Science

19pD-2 Control of Electrostatic
Kasuga Denki INC、
charge by use of Explosion - Japan national
Protected Static Eliminator Institute ofin Powder Handling Process occupational safety
and health

19pD-3 Effect of the shape ofgrounded electrode on theelectrostatic discharge fromcharged human body (PartⅡ)
19pD-4 Effect of the Shape of theOutlet of Ventilation Duct
for Controlling Ignition
Hazard of Hydrogen due tothe Static Electricity

In our previous study, it says that oscillation component after the first peak of the discharge
current of ESD from charged metal causes radiation noise. In this study, we investigate
characteristics and conditions of the oscillation component on the discharge current. The
applied voltage to the metal electrode is varied from ±2kV to ±10kV. In addition, we also
investigate the factor that influences this oscillation component.
From experimental result, we found the followings:
1) The oscillation component of the discharge current is relatively to the peak value of the 1peak discharge current.
2) There is no observation of the oscillation component on the 2-peaks discharge current.
3) As the breakdown gap length is shorter, the amplitude of the oscillation component andmaximum amplitude of the radiation noise is bigger.

Teruo SUZUKI，Recently, the automated process and the improved productivity have been advanced in the
Mizuki Yamaguma， powder handling processes. For example, large amounts of electrostatic charge generated by
Kwang-Seok CHOI friction and/or collision within the pneumatic powder transportation pipe walls and devices
accumulate on powders. As a result, electrostatic hazards and nuisances have become a large
problem in the powder handling processes. From such a background, explosion - protected
static eliminator and electrostatic field detecting system have developed, which can be used in
the powder handling processes as a countermeasure against electrostatic. We examined theinfluence of the voltage waveform applying to the eliminator on the charge elimination
performance for charged particles. When an AC voltage was applied to the eliminator, theelimination was insufficient, while a DC voltage charged the specimen to the opposite polarity.
Therefore we tried that feedback control type static eliminator was evaluated with a real scale
experimental facility for pneumatic powder transportation. As the experiment results, it was
confirmed that the feedback control typeelectrostatic eliminator is effective for control the electrostatic charge of powder. Experimental
details and results are presented in this paper.

Department ofHiroshiIn this paper, the relationship between waveform of discharge current of ESD from the charged
Electrical Engineering, YOSHIHARA ,human body and the body potential is discussed. The shape of grounded metal in actualTokyo University of Takahiro YOSHIDA situation of ESD has many types. In this study, we research the effects of
Science, Noriaki MASUI
Research Institute of Tomohiko Imamura, In order to prevent the ignition of hydrogen due to the static electricity at the outlet of
Science for Safety
Toshio Mogi, Yuji ventilation duct, we investigated the effect of the shape of outlet of ventilation duct. Four kinds
and Sustainability
Wada and Yuji
of outlets were designed; 1/4 inch pipe, 1/2 inch pipe, 1 inch pipe and tapered porous outlet.
Ogata
The total opening area of the tapered porous outlet is same as that of the 1/4 inch pipe.
Iron(III) oxide was used as the model dust in the ventilation duct. We measured the voltage
generated at the ventilation duct that the outlet was installed and that of the mixture which
consisted of the spouted hydrogen, ambient air and iron oxide particles. It was confirmed that if
the ventilation duct and outlet are grounded, there are little concern that the static electricity
which has the enough energy to ignite hydrogen is generated at the ventilation duct and outlet.
But it was also clarified that the voltage of the mixture cannot be reduced by only grounding
the ventilati! on duct and outlet. However, it was confirmed that the voltage and energy of the
mixture can be reduced by using the tapered porous outlet.

19pD-5 Calculation of the energy of National Institute ofa spark discharge from an
Occupational Safety
insulated conductor in an
and Healthelectric field

A. Ohsawa

19pD-6 Investigation Results on the National Research
Causes of the Fire of theInstitute of Fire andTransformer in the Power
Disaster
Station due to the Niigata
Chuetsu Oki Earthquake

Hiroyuki TAMURA The Niigata Chuetsu Oki Earthquake (M6.8) occurred on July 16, 2007. In Kashiwazaki-Kariwa
Nuclear Power Station, a fire occurred at the House Transformer 3B of Unit No.3. We report
the outline of a fire of the House Transformer and the causes of the fire. The main contents
are as follows. At the House Transformer 3B, because the secondary connecting bus of thetransformer was subsided against the foundation of the transformer, the secondary connecting
bus ruptured. Then the bushing of the secondary side of the transformer ruptured, and theinsulated oil leaked out the inside of the duct of the secondary connecting bus. And the ductcontacted to the connecting terminals, arc discharge occurred between the duct of theconnecting bus and the connecting terminals in the duct. The insulated oil leaked ignited by
the heat of arc discharge.

This paper presents calculation methods of the potential of an insulated conductor in anelectric field to evaluate the electrostatic ignition risk by a discharge may occur from it, inwhich they use Gauss's law or Thomson's theorem. In addition, the electrostatic energy of a
gap between a grounded conductor and it corresponding to that of a spark discharge as well as
the surface charge distribution and capacitance of it can be obtained from the result of its
surface electric field distribution.