No.

Title

12aA-1

Atmospheric pressure discharge plasma has been studied and applied to environmental
Diesel Exhaust
Department ofTomoya SUZUKI,
purification in recent years. We have been trying to purify diesel exhaust gas and we have
Treatment byEnvironmental and Hideaki HAYASHI,
verified that the combination of discharge plasma and honeycomb catalyst is quite effective for
Honeycomb Discharge Life Sciences,
Hirofumi KURITA,
Generated with a
Toyohashi University Kazunori TAKASHIMA, the exhaust treatment. However, complicated setup of high voltage power supplies andelectrodes is required to generate stable discharge plasma inside the narrow capillaries of theSingle High Voltage
of Technology
Akira MIZUNO
honeycomb catalyst. Therefore, discharge formation inside a ceramic honeycomb using a single
Power Supply
high voltage power supply was carried out in this study. As a result, primary discharge was
generated by using surface discharge electrodes installed at both ends of the glass capillaries
and the discharge successfully expanded into the capillaries from both sides. In this study, NO
oxidation using this type of discharge was also investigated. As a result, the oxidation efficiency
was improved by the combination of the honeycomb discharge compared to that of surface
discharge alone. Therefore, it was suggested that the discharge was formed inside thehoneycomb
Control of Electrical Faculty of Education, ○Yoshiaki Yamano and Polymer nano-composite was prepared by mixed addition of azobenzoic compound and Al2O3
Tree in NanoChiba University
Masaaki IIzuka
nano-particle into LDPE to improve the electrical treeing resistance under ac voltage
Composite LDPE
application. Three kinds of azobenzoic compound were tested: azobenzen (Az), nitro-azobenzen
Added with
(Ni_Az) and amino-azobenzen (Am_Az). The average diameter of the particles was in a range
Azobenzoic
22.2 - 47.7 nm. The maximum concentrations of the azobenzoic compound and the particle inCompoundLDPE were 2.5 wt% and 5 wt%, respectively. The test materials of the mixed addition were
processed in our laboratory by the solution casting method. The experimental results showedthat tree initiation voltages for the mixed addition (2wt% of Az and 3wt% of the particle) were 2
times higher than those for LDPE with single addition of Al2O3 particle. The mixed addition was
also effective to control tree development. The development for the material of mixed addition
for above concentrations was estimated to be more than 100 times slower than that for LDPE.
In the case of the material of mixed addition, it was found that azobenzoic compounds preventthe cohesion of Al2O3 nano-particles in the LDPE,
Atmospheric ionic current has been continuously measured in this study. Daily time evolution of
Measurement of
Department of
Yosuke KINOSHITA,
Atmospheric Ionic
Environmental and Kazunori TAKASHIMA, the potential normally showed a very small value after sunset until sunrise. It then gradually
increased with time reaching a peak around noon followed by a gradual decrease to a very small
Current and Possible Life Sciences,
Akira MIZUNO
value in the evening. It follows above time course of the potential in most cases, however,relation with
Toyohashiclearly and significantly different signal was observed in some cases. The earth is a capacitor
Earthquake
University ofmade of the crust and the ionosphere. If the pressure of the plate changes suddenly, it mightTechnology
cause the change of ground potential due to the piezo-electric effect and/or to movement ofunderground water that constitutes a battery. Sudden change of the surface potential of theground should induce counter charge in the ionosphere. This sudden change of the charge
distribution in the ionosphere could cause the change of atmospheric ionic current. The
abnormal behavior of the measured atmospheric ionic current prior to major earthquakes might
be an indication. Therefore, further study on the relation between atmospheric ionic current andearthquake is necessary.

12aA-2

12aA-3Affiliation

Name

Abstract

12aA-4

12aD-112aD-2

12aD-3

12pD-1

12pD-2Development ofElectrostatic
Measuring Techniqueusing Charged
Material Oscillation

National Institute ofAdvanced Industrial
Science andTechnology〇Kazuya KIKUNAGA, We have proposed and demonstrated a unique technique for electrostatic measurement with
Toshihiro KAMOHARA, detecting electromagnetic field (EM) generated by charged material oscillation (CMO). Charged
Kazufumi SAKAI and polyamide films were vibrated by acoustic wave, and EM intensity was detected through a
Kazuhiro NONAKA
monopole antenna and an oscilloscope. Changes of EM intensity generated by acoustic vibrationof the charged film were observed. This indicates that the change of EM field would be
generated by charge oscillation, which is displaced spatially. Also, surface potential of thesample was proportionate relationship to generated EM intensity with the acoustically-oscillated
sample. In addition, the EM phase was difference greatly depending on the nature of electricalpolarity. They mean that the CMO method is a promising measurement technique to detect
electrostatic easily and non-destructively.
Electrostatic Hazard Japan National
Kwang-Seok CHOIThis paper reports on electrostatic hazards related to a fluidized bed reactor freeboard region.
of Powders in
Institute of
The electric field was monitored over the fluidizing time. A batch-type fluidized bed system was
Fluidized Bed Reactor Occupational Safety
used in the experiments. The sample powder were polyvinyl chloride (PVC),
Freeboard Regionand Healthmethylmethacrylatebutadienestyren (MBS), polyamide11 (PA11), and cellulose (CL). The
superficial air velocity with zero relative humidity was 0.53 m/s. Several interesting results anddetailed discussion are presented in this paper.
There is a
Shibata Industrial○Nobuyuki Tsuda* et Flexible intermediate bulk containers (FIBC) are widely used for the storage and transportationelectrification
CO.,LTD*al.
of powdered. Static electricity occurs in the operation such as the filling, the emptying of FIBC
characteristic thatTechnology
and the electrification
happens. The ignitability electro static discharge by the electrification
the static electricity Institution of
can become serious problems such as the explosive accident under the combustible
disaster prevention
Industrial Safetyatmosphere. Countermeasure against static electricity FIBC which restrains an ignitability
flexibility container（TIIS)**
electro static discharge as the measure exists. Each type exists in countermeasure againsthas.
static electricity FIBC but there seems to be few ones which are explaining themechanism,
being clear. It had a purpose of clarifying the difference of each type in experimenting on eachtype of countermeasure against static electricity FIBC in the electrification and making the data
Effect of Humidity on Technology○Manabu HIRAI、
Relative humidity dependence of electric potentials of a person walking on a ceramic tile wasElectric Potential of a Research Institute of Hirokazu KIMURA
examined for four kinds of footwear. For any footwear, while relative humidity decreased, not
Human Body
Osaka Prefecture
only the electric potential but also its resistance increased gradually. But the relationship
Generated by a Walk
between relative humidity and resistance for the ceramic tile could not be derived. The order offootwear on the value of electric potential was different from that of resistance of footwear at
the same humidity. As a result, the electric potential of the walking human body was notdetermined only by the resistance of footwear.
Instrument forTokyo University of Norio Murasaki
Frictional electrification generate transverse wave and longitudinal wave of field with charge
Transverse Wave of Agriculture andelectrification and doublets electrification. Instrument for transverse wave of field and doublets
Field and Doublets
Technology
charge quantity measurement are not presented now. This paper is the present of them.
Charge Quantity＊Hachinohe〇Ken KAWAMATA＊,
Measurement of
The relationship between discharge voltage and radiated electromagnetic field intensity due toelectromagnetic field Institute of
Shigeki MINEGISHI＊
low voltage ESD was examined in experimental study. In this time, we present an experimental
intensity due to low Technology, ＊＊＊ and Osamu
system to measure the radiated electromagnetic filed intensity in wideband region using
voltage ESD using
Tohoku Gakuin
FUJIWARA＊＊＊
spherical electrodes and a horn antenna. As a result, the radiated electromagnetic field intensity
spherical electrode.
University, ＊＊＊is proportion to the charged voltage from 300V to 620V, and the amplitude of electromagnetic
Nagoya Institute offield intensity was according to the ratio of surface area of the spherical electrode.
Technology

12Pd-3

12pD-412pD-5

12pD-6

12pD-7

Effect of Apply
Frequency on
Performance ofFlange-Type
Electrostatic Ionizer＊Kasuga Denki INC 〇Teruo SUZUKI＊、 In order to improve the performance of the flange-type electrostatic eliminator, the effect of、＊＊Japan National Tomofumi MOGAMI、 the frequency of the AC voltage applied to the eliminator on the static charge elimination
Institute ofKwang Seok CHOI＊＊ performance was studied using a full-size pneumatic powder transporting facility. The frequency
Occupational Safety and Mizuki
of eliminator (AC 7kV in RMS) was used in the range of 2 to 200Hz. As the experiment results,
and Health
YAMAGUMA＊＊
it was confirmed that the frequency of eliminator was a important factor in performance; namely,
the charge to mass ratio, q [C/g] of powder decreased clearly with an increase in frequency ofAC-type ionizer under 0.1 MPa and 0.15 MPa. Some discussions are presented in this paper.
Development of Small Japan National
Kwang-Seok CHOI, et As one of countermeasures against accidents due to incendiary electrostatic discharges,
Type Explosion
Institute ofal.
electrostatic ionizers are required for industries. The new small type explosion protection
Protection
Occupational Safety
electrostatic ionizer has been developed, which is driven with an AC high voltage (±10 kVp-p,
Electrostatic Ionizer and Health
28 kHz). It consists of two needle electrodes situated within a grounded shield, a punch plate
inserted into the nozzle opening of the ionizer, two pressure sensors, a high-voltage powersource, and a slender air apply line. In this current study, we evaluated the elimination
performance of the new ionizer through the real size pneumatic powder transportation facility
and 300 kg of polypropylene powder. The new ionizer was attached to the end of the loading
pipe inside the silo. As the results, the new ionizer was effective for reducing electrostatic
charges from the sample powder. The effective elimination was achieved by using four arranged
new ionizers. It could suppress incendiary discharges, which occurred along the pellet-heap
Optimum Operating
The University of○Nana IWAMOTO,
The AC corona discharge air ionizer is one of the most important equipment for controlling
Frequency of AC
Industrial
Kazuo OKANO
electrostatic charges in the manufacture of electronic devices. The performance such as the
Discharge Air Ionizer Technology
neutralizing current and the voltage swing of the products depend on the operating condition of
the air ionizer. In this report, we deal with the effect of the operating frequency on theperformance of the air ionizer to find out the optimum operating frequency. The performance
was measured by using the charged plate monitor. Both the neutralizing current and the voltage
swing increased with decreasing the frequency. The methodology was discussed to find out the
optimum operating frequency.
A method to minimise National Institute of A. Ohsawa
This paper proposes a method to minimise the offset voltage of an object to be neutralised
oscillated offset
Occupational Safety
when an AC or pulsed-DC ioniser is used. It has been found in a computer simulation that thevoltage with an AC or and Healthoffset voltage is created by imbalanced current between the motions of positive and negative
pulsed-DC ioniser
ions in vicinity of the ioniser that caused by the local electric field generated by alternate spacecharge of positive and negative ions there; in addition, it causes the oscillation of the offset
voltage. The idea of the modification is to eliminate the cause by the alternate space charge
and a simulation demonstrates that it can reduce the oscillated offset voltage.
A Study of Ion Flow in KOGANEI Corp.＊ , ○Yoshinari Fukada＊、 There are a lot of types of ionizers using a DC or AC Corona discharge and the ions are often
Jet from a Nozzle on Dept. Electrical Eng., ＊＊、Kazuo Kotsuji
carried by air jet toward the vicinity of the object. We have investigated about a DC or AC
an Ionizer
Yamagata University ＊、Ichiro Kano＊＊、 Corona discharge type ionizer with a Faraday Cage. In this report, we have measured the＊＊
Kyoko Yatsuzuka＊＊ dependency of spread of the ions, blown by the air from the nozzle on an ionizer. The farther
from the nozzle the probe is put, the smaller the air velocity is and ion current also. The
numerical value of nondimensional air velocity and ion current is the same, regardless the air
flow rate. The ions spread wider than air jet does. The air flow in impingement flow area, z/D=5,

12aC-1

12aC-2

12aC-312aC-412aC-5

Electric charge image Department of
Naotaro Kumagai andobservation using
Optical and Imaging Shin Omotani
SEM ―Relation
Science &between surface
Technology, School
potential and SEM
of Engineering, Tokai
image brightness―
University

Direct observation of latent image before developing by toner is ideal for detailed analysis inelectro photographic imaging process. SEM is an effective tool for visualizing electric surface
image. We have observed electric surface images, on PET film, formed by a corona discharger
with various scanning speed of the discharger. We have measured the relation between surface
potential and SEM image brightness. We also have observed the interesting process how theinhomogeneous latent image, which is caused by an indirect charging through a metal meshelectrode, is finally become homogeneous after an excessive charging.
Hydrophilic Treatment Osaka Institute of
Keiichiro YOSHIDA,
The surface of PTFE sheets are exposed to plasma that is generated with surface discharge inof PTFE Surface
Technology
Junichiro SUGIO
Ar under atmospheric pressure. The objective of the study is to investigate the non-uniformity
Using Surfaceof such the treatment. The surface characteristics of the treated samples are evaluated using
Discharge Plasma
contact angle of water and diiodomethane, and surface free energies. Results show that thetreatment makes surfaces hydrophilic basically according to plasma density, however the effectof the diffusion of excited species from the zone where plasma is generated is observed.
Basic study on
Shizuoka University, Yuta NOMA, at al.
Surface treatment of GaN substrate by atmospheric microplasma was experimentally
surface treatment of Innovation and Joint
investigated. Microplasma was generated with a pair of the electrodes which covered with the
GaN substrate by
Research Center
dielectric layer and faced each other, at relatively low discharge voltage of around 1 kV.
atmosphericStreamers which generated from the electrodes generate various radicals and ions could affectmicroplasma
a target surface. An analysis by X-ray Photoelectron Spectroscopy (XPS) was measured before
and after microplasma surface treatment of GaN.
Influence of gases to ＊School of○Keisuke HANAWA＊ Dye-sensitized solar cell (DSC) is a promising next generation solar cell. In this paper we
Dye-Sensitized Solar Engineering, The＊，Shungo ZEN＊＊， propose the process of TiO2 electrode on the DSC using an alternating dielectric barrier
Cell with Dielectric
University of Tokyo Yoshiyuki TERAMOTO discharge (DBD) in atmospheric-pressure humidified nitrogen to enhance the efficiency of theBarrier Discharge in ＊Graduate School ＊＊，Ryo ONO＊＊， DSC. This is low temperature processing and has an advantage that it can be used for a plastic
Atmospheric Pressure of Science, The
Tetsuji ODA＊
film DSC as well as a glass plate DSC. When the treatment time is 5 minutes with the discharge
University of Tokyo
voltage of 36kVp-p, the frequency of 200Hz and the degree of humidity of 95%, the short-circuit
photocurrent density and the energy conversion efficiency of the DSC are increased by about
6% and 10%, respectively, compared with the untreated one. The OH radical generated by thedischarge seems to be an important factor to increase the amount of dye absorbing on TiO2
film. It results in the improvement of the conversion efficiency of the plasma treated DSC.
New Method to
Faculty ofMichihiko Nakano, at al. Recently, nano-composites have been paid attention since there is a possibility they will
Fabricate Large-scale Information Sciencesupersede metal or ceramic materials. Carbon nanotube (CNT), especially, is an excellent
Composite Filmand Electricalcandidate as a nano-filler due to its physical, electrical and thermal properties. When highContaining Carbon
Engineering, Kyushu
electric field is applied on CNTs in a nano-composite, CNTs are aligned along the electric field,
Nanotubes aligned by University
resulting in increasing its properties in the aligned direction. Although application of electric fieldparallel electrodefor the alignment is effective, the conventionally used one pair of parallel plate electrode is notarrayapplicable to large-sized nano-composite fabrication due to limited output voltage of highvoltage source. We proposed an array of parallel wire electrodes to address this issue.
Composite material was spread over a thin dielectric layer placed on the wire electrodes. Highelectric filed region can be extended over wider area just by increasing the number of theelectrode pair. Discrete electric field distribution bordered by the wire electrodes was avoided
by linearly oscillated motion of composite film. A CNT/epoxy resin composite film with the size of12pB-1

12pB-2

12pB-312pB-412pB-5

Aerosol generation
School of Chemistry, ○M. Prantsidou and J. The treatment of spent oils and organic solvents from the nuclear industry which may be
and collection of
University of
C. Whitehead
considered as low level radioactive waste (LLW) represents an unsolved challenge in the cleanhydrocarbon in diesel Manchester
up of nuclear waste. One of the common spent-oils found in nuclear waste is odorless kerosene.
exhaust gas by using
In this work, non-thermal atmospheric plasma has been generated in an AC gliding arc dischargeozonreactor, to treat odorless kerosene in the vapour phase, as understanding the gas chemistry
would be the key for future liquid treatment. The effect of different carrier gas composition on
the odourless kerosene destruction has been investigated using FTIR spectroscopy and OES forquantitative and qualitative analysis.
TolueneNational Institute of ○Masami SUGASAWA, The ozone (O3)-assisted catalytic oxidation of toluene was investigated on ZSM-5, Ag /ZSM-5,
Decomposition Using Advanced Industrial Hyun-Ha KIM,
HY and Ag/HY in order to optimize two-layered O3-assisted catalysis system. Consequently,
Two-layered Ozone- Science andKatsunori KOSUGE,
the zeolite (ZSM-5, HY) catalysts were used for the upper layer because of adequate C6H5CH3
assisted Catalysts
Technology (AIST) Atsushi OGATA,
conversion. On the other hand, Ag /ZSM-5 catalyst having strong oxidizing power of C6H5CH3
Consisting of ZeoliteandNobuaki NEGISHI to CO2 was set in the lower layer. The 0.5 g ZSM-5 + 0.5 g Ag/ZSM-5 combination showed 91(ZSM-5, HY) and% of C6H5CH3 conversion and 94 % CO2 selectivity without HCOOH formation by supplying
Ag/ZSM-5
2700 ppm O3 at 100°C. However, 0.5 g HY + 0.5 g Ag/ZSM-5 combination showed 95 % of
C6H5CH3 conversion and 91 % CO2 selectivity with 6 ppm of HCOOH formation under the same
conditions. The former showed the excellent performance further than the latter.
Influence of Ozone
School of
Yuta Tomimura, et al. Trichloroethylene (TCE) decomposition in the dielectric barrier discharge reactor combined withand Catalyst on
Engineering, The
the catalyst was investigated concerning with that amount. In this experiment, the catalyst was
Trichloroethylene
University of Tokyo
settled at the down flow of the reactor. The tested amounts of the catalyst in this experiment
Decomposition by theare 1g and 2g. respectively for the gas flow rate of 1 l/min. As the filled catalyst in the chamber
Atmospheric Nonincreases, the TCE decomposition efficiency increases even at 3g catalyst suggesting thethermal Plasma
further improvement of the efficiency.
Development of Silver National Institute of ○Atsushi OGATA*,
Performance of ozone assisted catalysis on decomposition of toluene at 100oC was investigated
Based Catalyst for
Advanced Industrial Tetsuya NANBA*,
using Ag supported various metal oxides, such as Al2O3, TiO2, SiO2, ZrO2 and MgO. It was
TolueneScience andHyun-Ha KIM*, Masami found that Ag/ZrO2 showed highest performance among them. Toluene conversion decreased in
Decomposition
Technology (AIST) SUGASAWA*,Katsunor the order Ag/ZrO2 > Ag/MgO > Ag/Al2O3 > Ag/SiO2 > Ag/TiO2. In particular, Ag/ZrO2 andAssisted by Ozone
i KOSUGE* andAg/MgO could decompose ozone easily. The propensity of catalysts for active oxygen species
Hisahiro EINAGA**
formation from ozone decomposition is one of important factor for the ozone assisted catalysis.
Most of Ag species on ZrO2 and MgO was supported as metallic state, while Ag species on theothers were supported not only as metallic Ag state but also as Ag+ state. These results
suggested that metallic Ag species were useful for the ozone assisted catalysis. Furthermore,
we pointed out that the basicity of catalyst supports was a significant factor for getting the
PM oxidation by using Department ofShunsuke MORIMITSU, Air pollution have became a serious problem as a result of remarkable economic development.
microwave withEnvironmental and Hideaki HAYASHI,
The exhaust from diesel vehicles is one of the serious air pollutants. Especially, particulate
various infill powder Life Sciences,
Soichiro KAWAKAMI, matter (PM) in the diesel exhaust, contains causative agents of the respiratory illness, and it is
Toyohashi
Kazunori TAKASHIMA, feared to influence harmfully to human health. Recently, diesel exhaust gas treatment method
University of
Akira MIZUNO,
using diesel particulate filter (DPF) has been developed. Although it has high collection
Technology, DENSO Yoshihiko MATSUI
efficiency, the collected PM blocks the filter and it causes high pressure loss. Therefore the
CORPORATION
technology for PM oxidation at low energy consumption is required. In this study, PM oxidationby using microwave with various powder infill was investigated for efficient oxidation. As a result,after the oxidation of carbon powder mixed with infill powder, CO concentration was lower andCO2 concentration was higher compared with those without the infill powder. The weight ofcarbon powder mixed with various catalyst powders was also decreased. Consequently, theoxidation could be assisted by the powder mixed with carbon powder. Using microwave irradiation
using microwave and infill powder are effective for the regeneration of in DPF.

12pB-6

12pB-7

12aD-412aD-512aD-6An ESP using bipolar- Panasonic Ecology
discharge with DC
Systems Co., Ltd*,
corona for roadToyohashitunnels
University ofTechnologyy**

Atsushi Katatani*,
Akira Mizuno**Two-stage-type ESPs (electrostatic precipitators) are composed of ionizers and collectors. DC
high voltage is applied to the discharge poles in the front stage ionizers. Particles passing
through the space of positive or negative corona are charged. The rear stage collectors capture
the particles. Although spike-typed dischargers are adopted widely, the spikes in this test arearranged not only in the voltage-applied plates but also in the earth-plates in the ionizer. As thetest result, particles are collected by the discharge from both the voltage-applied plates and theearth-plates. The discharge in earth-plates generates ions with opposite polarity to that ofvoltage-applied plates. This bipolar collection method with the simultaneous positive-andnegative discharge shows a possibility that particles are efficiently captured not only on earthplates but also on voltage-applied plates in the collector. This study implies that the bipolarDevelopment of EHD- Department ofSatoru MAEDA, et al. The novel device is able to not only collect the low resistive particles generated from diesel
Enganced Plasma
Electrical andengine but also incinerate captured particulates within the same reactor. The new
Electostatic
Electronics
electrohydrodynamically (EHD)-enhanced plasma ESP (EHD plasma ESP) is to utilizes the ionic
Precipitator
Engineering, Tokyo
wind to transport the charged particles effectively into the low electrostatic field region where
City University
electrostatic repulsion force acting on particles by induction charge becomes very small,resulting in reentrainment suppression. At the same time, collected particulates are incinerated
by ozone and oxidation product of NO2 in the flue gas by the surface discharge plasma, so thatno particle handling device is required. The particle-size dependent collection efficiency andparticle incineration were evaluated by the Scanning Mobility Particle Sizer (SMPS) and particle
counter (PC). This device is particularity important applications for automobile and marine diesel
Measurements of*1 Impulse Physics Masamitsu Honda, et In case less than about 0.1mm small gap exists between a floating metal and neighbor metal,
Transient Noise on
Laboratory, Inc. *2 al.
voltage difference is generated between the gap by static charge induction depending upon
Information Cable
Tokyo Electronics
surrounding field variation and discharge ("Induced ESD") may occurs at the gap if conditions
Exposed by Induced Trading Co., Ltd.
meet. We report and analyze the measurement results of induced noise waveform received by
ESDvariety of information cables closely exposed by this induced ESD.
Contact
discharge from an electrified object into a floating device was investigated as theContact Resistance Department of
Yutaka Soda, Tetsujienergy-loss
caused thermal damage. With the discharges between various capacitors, thermalDepends on
ElectricalOda
energywasobtainedby integration of the current-waveform. Theoretical energy-loss was
Transferred Energy in Engineering, The
estimatedbythedifference
between the potential energies prior to and following the discharges.
Contact Discharge University of Tokyo
The energy-loss was 0.05nJ for 2pF-capacitors at 10V and increased 2.5nJ when both
capacitors were 100pF. 3D-plot of the energy-loss indicated a gradual increase as both
capacitance-values increased. Comparison of the potential energy-loss and the current energy
indicated that the contact resistance decreased from 100ohm to few-ohm as the energy-loss
increased
Comparison of ESD Department of○Junki KOMURA,
In recent years, electrostatic discharge (ESD) causes serious damages to semiconductor
Characteristics from Electrical
Takahiro YOSHIDA and devices and electronic equipments. Therefore, the elucidation of the mechanism of the ESD has
Various Discharge
Engineering， Tokyo Noriaki MASUI
been required．In actual situation, ESD occurs by many kind of discharge sources. In this study,
Sources
University of
we research the ESD characteristics of 5 types of discharge sources. The charged potential is
Sciencevaried from ±1kV to ±3kV. The grounded electrodes are hemisphere. The radius of curvatureof electrode is 5mm or 15mm. From experimental results, we found followings; (1) Max frequency
of discharge current from ESD gun was different between the air discharge and the contact
discharge. (2) Discharge rate and charge amount of ESD from charged human body was smaller.
(3) The value of all parameter of ESD from fingertip of charged human body was smallest.

12aD-7

12aD-8

12pA-1

12pA-2

12pA-3Development of apractical ESD
detector system＊Kagoshima○Hiroshi ONOMAE
Prefectural Institute ＊，Masaaki KATO＊＊
We developed a practical ESD detection system. It is constructed four receiving antennas andof Industrial
fast-sampling digital oscilloscope, and can detect ESD source position accurately by hyperbolic
Technology，＊＊
method. By using alignment tool, the setup time to make preparations became very short.
NIPPON KEIKI
KAGOSHIMA Co.,
Calculation Method of Department of○Hajime HIROSE,
It is desirable to simulate the ESD tolerance and immunity in advance because this pre-test
RLC Constant forElectrical
Takahiro YOSHIDA and method will achieve shortening of the development period and reduction of development cost. In
Equivalent Circuit of Engineering, Tokyo Noriaki MASUI
the development of this ESD tolerance simulator, the ESD equivalent circuit which reflects real
Various Electrostatic University of
ESD characteristics is necessary to realize the simulator. Therefore, in this study, we developed
Discharge
Sciencecalculation method of RLC constant for equivalent circuit of various ESD such as ESD gun(IEC61000-4-2), ESD from fingertip of charged human body, ESD from metallic tool handled bycharged human body and ESD from charged metal. This method could calculate the constantfrom actual ESD current parameter, i.e. peak current and peak appearance time, as transientphenomena of RLC series circuit. In addition, we designed the some equivalent circuit which
reproduced the current waveform of various ESD by the proposed method. As a result ofcomparison between the simulated current waveform using a circuit simulator “Agilent
Technologies GENESYS” and targeted actual current waveform, we confirmed that the
proposed method could calculate the RLC constantof equivalent circuit with high accuracy from the viewpoint of the shape of the waveform,
the peak current value and the peak appearance time
Influence of Pulse
Ippei YAGI, Koichi
Streamer corona discharge was generated by applying nanosecond pulsed voltage with many
Rise Time on
TAKAKI, Sho OKADA, different pulse rise times. Pulsed voltage having pulse rise time of 5-41 ns was applied to a
Streamer Velocity and
Takao MATSUMOTO, coaxial chamber in atmospheric pressure air. Streamer propagation in the discharge wasSpectroscopic of
Douyan WANG, Takao observed using a streak camera. The propagation velocity increased with a shortening rise time
Plasma Emission
NAMIHIRA, Ryo ONO of the pulsed voltage. Transient light emissions of N2 Second Positive System (SPS, N2(C3・u)・
Using All Solid Typeand Tetsuji ODA
・N2(B3・g)) and N2 First Negative System (FNS, N2+(B2・u+)・N2+(X2・g+)) from streamer
Nanosecond Pulsed
discharges were observed for estimating electric field of the discharge. The light emission ofPower Generator
SPS had a peak at several nanoseconds after the FNS peak.
Particle formation by
Kenkichi NAGATO
Stable ion clusters formed by discharges in the air have been proposed to provide a stable
the recombination ofsource of new aerosols through ion-ion recombination with stabilization of the recombination
positive and negative
cluster. However, few laboratory experiments have confirmed that positive and negative ions
ions generated bygenerated in the air can form ultrafine particles via ion-ion recombination. We developed an ion
discharges
recombination chamber which consisted of a drift tube and corona discharge type ionizers.
Positive and negative ions were generated by corona discharge at each end of the drift tube andwere forced to drift toward opposite direction by the electric field in the drift tube. Formation ofparticles through ion-ion recombination was accessed by measuring the particle concentration
under the conditions with unipolar discharge and bipolar discharge, and with drift voltage 0 and
500V. We have confirmed that ion-ion recombination can form particles and that ammonia
greatly enhanced the particle formation. Positive and negative ion compositions were alsomeasured using a drift tube ion mobility/mass spectrometer.
Theoretical analysis The University of○Atsushi Komuro, Ryo A practical streamer discharge model is developed to analyze the characteristic of pulsedof streamer discharge Tokyo
Ono, Tetsuji Oda
streamer discharge in a positive point-to-plane electrodes filled with air at room temperatureby discharge
and atmospheric pressure. The calculated primary and secondary streamer development shows
simulation
good agreement with an experimentally obtained streak photograph. The calculation shows thatthe calculated streamer head development and streamer radius are closely dependent on theli d ltit

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13aC-113aC-213aC-3

Raman spectroscopy *Graduate School of 〇Ayumi
of molecule densities Frontier Sciences,
KUMAMOTO*,Ryo
in Hydrogen-Air
The University of
ONO* and Tetsuji
mixture premixed gas Tokyo **School of ODA**
ignited by spark
Engineering, Thedischarge
University of Tokyo
Spatial and temoral
Innovation and Joint Marius Blajan, et al.
distribution ofReserch Center,microplasma light
Shizuoka Univ.
emission

For investigating the electrostatic ignition process of hydrogen-oxygen mixture, the densities
and dynamics of H2, O2 and H2O molecules are measured in a spark-ignited hydrogen-oxygen
mixture using Raman spectroscopy. A KrF excimer laser (248 nm) is used for the Raman
spectroscopy. Hydrogen-oxygen mixtures with 30%, 66% and 80% H2 are ignited with a capacitive
spark discharge.

Emission spectroscopy analysis was used to study the microplasma phenomena. The
microplasma discharge in Ar, O2/Ar and N2/Ar mixture was analyzed in the discharge gap areaand spatial and temporal distribution of active species was measured. The results are necessary
for optimizing the microplasma processes such as surface treatment and biomedical
applications.
Measurement of OH *Advanced Energy, ◯Seiya YONEMORI*, Two-dimensional distributions of OH density and air-helium mixture ratio in atmosphericradicals in
The University of
Yusuke NAKAGAWA**, pressure helium plasma jet were measured using laser-induced fluorescence (LIF). The airatmospheric-pressure Tokyo **Ryo ONO*, and Tetsuji helium mixture ratio was measured using the quenching rate of OH excited state in the LIF
helium plasma jet
Department ofODA**
measurement. The plasma jet was generated by an ac high voltage (7 kHz, 10 kV peak-to-peak).
using laser-induced Electrical
The diffusion of ambient air into the helium jet was quantitatively measured by the LIF. It was
fluorescenceEngineering, The
shown that the OH radicals are distributed only in the plasma jet with its peak density of 0.1
University of Tokyo
ppm.
Basic Study of Low Innovation and joint Shigeki Tatematsu, et Sterilization of bacteria by atmospheric microplasma was experimentally investigated．
Discharge Voltage
Research Center,al.
Microplasma was generated by electrodes which were covered with a dielectric layer and faced
Remote Sterilization Shizuoka Univ.
together with a spacer (thickness 100 mm) in between， at relatively low discharge voltage ofProcess by Usingaround 1 kV． This experiment was performed Ar and air as a process gases． Various radicals
Atmosphericand ions could affect bacteria． Microplasma generated by both air and Ar are effective forMicroplasma
sterilization with various radicals and ions． The photos taken by SEM indicate that microplasma
sterilization acts like an etching process．
A NumericalTokyo Metropolitan ○Yuichi YOSHIDA,
The electrical condensation of microparticles using dielectrophoretic device is an attractive
Simulation of
University
Yuta TESHIMA,
technique for detection of bacteria although the optimization of device structure is essential forDielectrophoretic
Satoshi UCHIDA,
further improvement. In the present work, an analytical model was developed on the basis ofCondensation Fumiyoshi
cellar automata and the concentration properties of bacteria were investigated at various
Analysis of
TOCHIKUBO
operating parameters. The detailed behavior could be simulated for transportation andAggregation
aggregation of bacteria. In addition, the influence of gap length of the device to the number ofCharacteristic oftrapped bacteria was shown quantitatively. These results suggest that the present model is
Bacteriaavailable for the optimum design of dielectrophoretic devices.
Mechanisms of*Department of〇Chihiro
Atmospheric pressure plasma has been investigated in the area of hazardous material
Neoangiogenesis using Biomedical
TSUTSUI***,Takamichi decomposition, and surface modification. Recently, plasma application was expanded to
Micro-Spot PlasmaEngineering,
HIRATA*,***, Yukiko sterilization, disinfection, and development of complex new areas which require a diverse**Department of
YOKOI*, Toshifumi
perspective, involving biomedical science. From the above-mentioned background, we carried
Electrical and
KOMACHI*,Takumi
out the experiments for tissue and cell activation using micro-spot atmospheric pressures
Electronic
KISHIMOTO*, Shigeru plasma (micro-spot plasma) source. Using an in vivo and in vitro model, we investigated theEngineering,***Nano MURATA*, Akira
effect of the direct ion/radical irradiation to endothelial cells and burn wounds of rat. Endothelial
Carbon Bio Device MORI*, Masahiro
cell proliferation and death following plasma were measured. FGF2 and VEGF expression from
Research Center,
Akiya*,***, Toshiaki
endothelial cells and its effect on cell proliferation were semi-quantified. Finally, the mechanisms
Tokyo City niversity YAMAMOTO**, Akira of new blood cell development using micro-spot plasma on were explored. This proliferative
TAGUCHI*, ***effect is likely related to FGF2 and VEGF release due to plasma-induced reactive ion/radical
interaction.

13aC-4

A Novel Gene
Transformation
Technique using
Water-in-oil Droplet
in an Electrostatic
Field

Department ofEnvironmental andLife Sciences,
ToyohashiUniversityof Technology

ASADA
ATSUSHI,Kurita
Hirohumi Kazunori
TAKASHIMA, Akira
MIZUNO

13aC-5Inactivation of cell
viability by plasmatreated culture
medium*Tohoku Univ.,**Shinshu Univ.

○Takehiko Sato*,
Mayo Yokoyama*,
Kohei Johkura**

13aC-6

Investigation of
Microbial Inactivation
Profile bySubmerged Style
Pulse Discharge
System in Bubble
Water*◯Department of◯Takanori TANINO*,
Chemical andMiki Yanagisawa*,
Environmental
Takayuki Ohshima*
Engineering,
Graduated School ofEngineering, Gunma
University

13aC-7Single-molecule
Measurement ofStrand Breaks on
Large DNA Induced
by AtmosphericPressure Plasma Jet

Department ofHirofumi KUIRTA,
Environmental and Tomoko NAKAJIMA,Life Sciences,
Hachiro YASUDA,
Graduate School of Kazunori TAKASHIMAEngineering,and Akira MIZUNO
Toyohashi Universityof Technology

Droplet-based micro total analysis systems (&#61549;TAS) have been investigated by many
researchers and used in bioengineering. In these systems, individual water-in-oil (W/O) droplets
perform as micro-reactors. To manipulate W/O droplets, an electrostatic field is one of themost useful tools. For example, by applying a direct current electric field between electrodes
soaked in oil, W/O droplets in the electrodes spacings reciprocate due to dielectrophoretic
force and Coulomb force. In this study, gene transformation to Escherichia coli (E. coli) cells byusing the droplet reciprocation was carried out. A droplet containing E. coli and plasmid DNA
was located between the electrodes and DC voltage was applied. As a result, the transformants
were obtained. Therefore the gene transformation by the electrostatic droplet manipulation was
confirmed. In this method, sample volume can be smaller than that of conventional method.
Therefore, our novel gene transfection method is expected to be a new tool in miniaturizedbioengineering
In this study, we aim at clarifying an effect of H2O2 generated by exposure to a plasma flow in a
culture medium on inactivation of cell viability. The plasma flow was generated by a dielectricbarrier discharge between a needle and the surface of culture medium with the applied voltageof 7.5 kV0p, 5 k Hz and the power consumption of 7.1 W. The concentration of H2O2 generated
in the culture medium by exposure to the plasma was proportional to the plasma treatment time.
When the cells were exposed to the plasma-treated culture medium, the cell survival ratio
decreased with increase of the plasma treatment time. A same trend was observed
correspondingly by exposure to H2O2-added culture medium. Morphological damage processes
in both cases of plasma-treated and H2O2-added culture media showed a same trend. These
results implied that H2O2 could be one of important factor for inactivation effect on the cells
among stable chemical species in the plasma-treated culture medium.
Inactivation profiles of microorganisms by submerged style pulse discharge system in bubble
water were investigated. The survival ratio of 2 L Escherichia coli suspension with the celldensity of 107 viable cells per milliliter was decreased to 1.1×10-4 by the pulsed discharge
system in bubble water within relatively short time 120 seconds. The discharge plasma
frequency increased with air flow rate and gas species used for bubble formation affected on
the inactivation efficiency of E. coli suspension. Investigation with L-histidin as the radical
scavenger demonstrated that radicals generated by the discharge plasma was only one of theimportant factor of inactivation mechanism. And inactivation efficiency was strongly affected by
the initial cell density. The spore of Bacillus subtilis was also inactivated by pulsed discharge
system in bubble water. Although, inactivation of B. subtilis spore required longer treatment timethan that of E. coli, the survival ratio of 2 L suspension with the cell density of 107 viable cells
per milliliter was decreased to 2.2×10-3 within 60 minutes treatment. And B. subtilis spore inact
density.
We report a single-molecule-based analysis of strand breakages on large DNA molecules
induced by an atmospheric pressure plasma jet (APPJ). We exposed DNA solution to an argon
plasma jet; single-molecule observation that involved molecular combing was then used tomeasure the length of individual DNA molecules. The measured DNA length showed that plasma
exposure caused a marked change in length of DNA molecules. The rate of plasma-induced
strand breakage on large random-coiled DNA molecules was determined using a simple
mathematical model. For strand breaks on large DNA molecules the rate was estimated.

13pC-1

Inactivation process Department of○Yuuki TANI＊,of lysozyme induced Environmental and Hachiro YASUDA＊,
by non-thermalLife Sciences,
Hirofumi KURITA＊,
atmospheric pressure Toyohashi University Kazunori TAKASHIMA
plasmaof Technology＊＊, Akira MIZUNO＊

13pC-2A new fabrication
method of protein
array with highvoltage pulse
application

13pC-313pC-413pC-5

Department ofChemical andEnvironmental
Engineering,
Graduate School ofEngineering, Gunma
University.

〇Hidefumi Miyata,
Kazuhiro Yumoto,
Kanako Ito, Miwa
Tamegai, Hiroki
Kawaura, Miki
Sasahara, Nobuyuki
Oshima, Taiho Suzuki,
Masahiko Oshige andShinji Katsura

Recently,inactivation of protein is one of the serious problems in medical sterilization. Therefore
destruction and inactivation of protein by discharge plasma has attract attention. However, themechanism of inactivation of protein by the atmospheric pressure electric discharge plasma is
still unclear. In this study, to analyze the damage of protein by discharge plasma, lysozyme, oneof the proteins, whose structure and property have been already elucidated, was used. The
biological analysis of lysozyme inactivated by dielectric-barrier discharge (DBD) and helium
plasma torch was carried out in this study. Inactivation, degradation, and increase of themolecular weight were observed from the DBD-treated lysozyme. Moreover, lysozyme exposedto the helium plasma torch was also inactivated. However, the degradation of lysozyme was notconfirmed in case of the helium plasma torch. Lysozyme was considered to be nactivated not
only by decomposition but also by chemical modification.

A protein array is a piece of substrate on which many kinds of proteins have been immoblized at
separate locations in an ordered manner. This provides a multiplex approach to identify protein〓protein interactions between massive kinds of proteins. For esaier preparation of protein
arrays, we developed a new method of ''in situ'' immobilization of protein on modified gold
substrate by application of high voltage pulses. In this method, E. coli bacteria bearing the Histagged GFP (Green Fluorescence Protein) was immobilized on the gold substrate. The substrate
was soaked in lysozyme solution, and the outer membrane of E. coli bacteria was hydrolyzed.
Then, the remaining inner cell membrane was broken down by application of high voltage pulses,
resulted release of cytosol protein and immobilization of the recombinant protein on the surfaceof the substrate. This method may permit proteome analysis with a lower cost
Inactivation
Department ofHachiro Yasuda,
It is essentially important to understand the interactions between atmospheric pressure coldmechanism ofEnvironmental and Takuya Miura, Hirofumi plasma and living organisms for promoting the bio-medical application of the plasma.
bacteriophage M13
Life Sciences,
KURITA, Kazunori
Bacteriophages are suitable for the study of such a interaction because of their simple
treated with
Toyohashi
TAKASHIMA, Akira
composition and structure. We have analyzed the biological damages of DNA in M13 phage
atmispheric pressure University of
MIZUNO
exposed to the plasma. The plasma caused damage to the phage DNA not only single strand
cold plasma
Technology
break but also some chemical modification. The damage was repaired in vitro by DNA repair
enzymes, and ascorbic acid prevented the DNA degradation. DNA transfection assay revealed
that single strand DNA is extremely susceptible to the plasma. Coat proteins proved to be morerobust than the DNA by recombinant phage DNA experiments. We reached the conclusion thatDNA damage is responsible for the plasma-inactivation of M13 phage.
Cell Activation and＊Department of〇Shigeru INOMATA Two different types of plasma reactor were used to investigate the effectiveness of Nonthermal
Inactivation using
Electrical and＊, Takamichi HIRATA plasma irradiation on NIH3T3 cell activation and inactivation. One was the nanosecond pulsed
Atmospheric Pressure Electronic＊＊, Chihiro TSUTSUI corona and the other was the surface discharge plasma reactor. The effects of oxygen
Nonthermal PlasmaEngineering, ＊＊＊＊＊, Yoshiyasu
concentration as background media, soft/hard plasma, and plasma treatment time were
Department of
EHARA＊, Toshiaki
investigated. The results showed that soft plasma irradiation was effective for cell multiplication
Biomedical
YAMAMOTO＊
as activation. On the other hand, the effects of plasma irradiation time with low oxygen
concentration as background gas and types of plasma reactor were not clear for cell activation
Engineering, ＊＊＊or inactivation.
Nano Carbon Bio
Device ResearchCenter, Tokyo City
University

13pC-6

Collection and
Department of
Sterilization of E.coli Environmental andby using pulse voltage Life Sciences,
Toyohashi
University ofTechnology

13aB-1The density
Graduate school of Yusuke Nakagawa, Ryo Behavior of radicals in non-thermal plasma is worth clarifying in order to interpret the chemicalmeasurement of OH Engineering, The
Ono and Tetsuji Oda reaction processes in the toxic gas decomposition by plasma. In order to reveal the oxidation
radicals in coaxial
University of Tokyo
processes in the decomposition, we made the coaxial cylinder DBD reactor emulating thecylinder DBD reactor
practical gas treatment reactor and measured the time evolution of absolute density of OH
under atmospheric
radicals in it. The absolute density near the HV anode at just after discharge is estimated to bepressure humid air
about 25-50 ppm. Besides, the dependence of OH production on humidity of background gas
was investigated in steady state when AC HV was applied. It resulted in a saturation of OH
amount against increasing humidity.
Influence of relative Department of○Yuki Nomura＊,
Recently, discharge plasma has been applied in various fields. Especially, atmospheric pressure
humidity on
Environmental and Hideaki Hayashi＊,discharge plasma has been studied for environmental remediation, Nitrogen Oxides (NOX)
honeycomb discharge Life Sciences,
Kazunori Takashima＊, removal from the exhaust emission, the removal of volatile organic compounds, and so on.
inside a glass capillary Toyohashi University Akira Mizuno＊
Previous studies demonstrated that discharge generated in a honeycomb catalyst can improveof Technology
the NOX removal. However, optimization of the discharge condition against humidity has notbeen considered yet, although diesel exhaust is highly humid. In this research, the discharge
condition for generation of stable honeycomb discharge was investigated by adjusting thehumidity. As a result, the packed-bed primary discharge was enhanced and the honeycomb
discharge easily occurred when humidity was high. In addition, the dielectric barrier discharge(DBD) was used as a primary discharge instead of the packed-bed discharge since generally it
is hardly affected by humidity, and the honeycomb discharge under the various humidity
conditions were investigated. The primary discharge was suppressed significantly when thehumidity was high. Never the less, the honeycomb discharge
was easily occurred under the higher humidity condition by applying positive DC high voltage
Effect of Space Gap ○＊Development○Yasuhiro OYA＊
Volatile organic compounds (VOCs) has a problem to the health and environment. A toluene,
Insertion byGroup, Home
Masayuki IWATA＊
which is one of the most commonly used VOCs, was used and the decomposition
Honeycomb Type
Comfort Division,
Yoshikazu ITO＊＊
characteristics by discharge plasma were investigated. In this study, the toluene decomposition
Discharge Reactor
Yamatake
Yoshiyasu EHARA＊＊ using honeycomb type discharge reactor has been experimentally investigated. The reactor that
Corporation ＊＊we had used made the zeolite honeycomb a sandwich with two electrodes. We examined theDepartment ofeffect of the space gap during zeolite honeycomb. Therefore, discharge pulses were analyzed,
Electrical andthe effects of the space gap during zeolite honeycomb on the toluene decomposition wereElectronic
investigated.
Engineering, Tokyo

13aB-213aB-3

Yosuke Kinoshita , etal.

Water pollution and depleted water resource have been serious matters due to increase of
population and economic growth in developing countries. One of the water treatment
technologies is filtration using filtration membrane, which can remove quite small
particles. However, clogging of filter and pressure drop are concerns in this method due to small
pore diameter of the filters, and so performance speed is slow and frequent replacement of filter
is needed. Therefore, we tried to develop a new technology on water treatment by applying
electrostatic field in this study. Collection of small particles in water such as bacteria (E.coli) byapplying dielectrophoretic force was carried out. Pellets of BaTiO3, a ferroelectric ceramic, were
packed as a layer inside the glass tube andpolarized by applying pulse voltage. Since electric field density should be higher between
polarized pellets, dielectrophoretic force can be induced to trap E.coli. Moreover, E.coli could besterilized at the same time by pulse high voltage. The number of E.coli was reduced by 90% by
our method. This could be due to cell membrane destruction of E.coli by high electric field betwee

13aB-4

Influence of Structure Department ofof the Anodic Porous Mechanical andAlumina Barrier on
Electrical
NOx Treatment in a Engineering, Nippon
DBD Reactor
Bunri University

13aB-5

Aerosol generationand collection ofhydrocarbon in diesel
exhaust gas by usingozon

13aB-6

Observation of theplasma in bubbles
using bubble control

13pB-1

Department ofEnvironmental andLife Sciences,
Toyohashi
University ofTechnology

Graduate School of
Science andEngineering, Tokyo
Institute ofTechnology
Decolorization of＊Department ofIndigo CarmineElectrical andSolution by
Electronic
Superimposition ofEngineering, Oita
Streamer Discharges University，＊＊on the Water Surface Institute of Fluid
and Ozone
Flow Machinery,
Polish Academy of
Sciences

Porous ceramics in a DBD reactor are useful not only for catalyst support but also forparticulate collection and gas adsorption. They also play an important role in the DBD
characteristics and plasma chemical reactions. In this study, anodic porous alumina with manystraight nanopores has been focused as the barrier of a DBD reactor. Its unique andcontrollable nanostructure is interesting in applying to the barrier, and also enables one to study
the relationship between the DBD and nanostructures systematically. In this paper, theinfluence of the barrier structure on the NOx removal were studied using the anodic porousalumina barriers. The relationship was observed between the NO removal rate and discharge
power which mainly depends on the change of relative dielectric constant er with the structureof the barrier. The unique change of the discharge power in film thickness between 16 and 33
mm was obtained only using the pore-widening barrier. That had direct effects upon the NO
removal rate. The NO2 adsorption on the barrier was increased with increasing its thickness (≒pore depth). However, it seemed thatlittle NO2 was adsorbed on it in the case of the porous barrier with thickness below 16 mm.
Nobuhiro Tanji, Hideaki Hydrocarbon in automobile exhaust produces photochemical oxidant, which causes air pollution.
Hayashi, Hirofumi
Hydrocarbon is exhausted until the catalyst gets warm. It is necessary to develop the novel
Kurita, Kazunori
technology that reduces hydrocarbon emission at the low temperature. Experiments on
Takashima, Akira
hydrocarbon reduction by using ozone injection were carried out in this study. The total number
Mizunoconcentration of Particle Matter (PM) and the gas components were measured. As a result, ofozone injection the total number concentration of PM was increased, but the newly-generated
PM by injecting ozone into the exhaust was effectively removed by the Electrostatic
Precipitator (ESP). The concentration of the gas components such as olefinic hydrocarbons andaromatic hydrocarbons was decreased after the ozone injection. Therefore, this method can beused to reduce both PM and hydrocarbon emission. Next, the PM collected by ESP wasanalysed. As a result, it was suggested that the products generated by the ozone injection might
be not solid particles but liquid particles.
As a result of EDX analysis, oxygen atoms were found only when ozone was injected.
And ozone-injected sample showed stronger carbon signal compared with PM in the exhaust
without ozone injection○Hayato OBO,
Plasma generated in bubbles is widely studied due to their energy efficient decomposing
Nozomi TAKEUCHI and abilities, particularly for persistent substances. The plasma〓water interactions are crucial for
Koichi YASUOKA
efficient decomposition, thus a new synchronization technique has been developed by combiningpressure control of the gas chamber and pulsed plasma generation. The plasma shapes showedapparent distinctions according to time lags between the bubble and plasma.
○ Siyuan GENG*, Seiji Pulsed streamer discharges can be generated on the water surface and are applicable to several
KANAZAWA*, Shuichi applications. Formation of hydroxyl (OH) radicals by streamer discharge has been demonstrated.
AKAMINE*, Ryuta
The acidic feature of OH radicals and its ability to diffuse into water can be utilized for water
ICHIKI*, Marek KOCIK treatment. Hence the formation of OH is an important aspect of water treatment process. In**, Jerzy
this study, we focus on the superimposition of streamer discharges and ozone in water. Through
MIZERACZYK**
our experiment, ozone is introduced through the nozzle electrode to interact with the streamer
discharges on the water surface. As a result, superimposition of streamer discharges on thewater surface and ozone shows to be more time efficient as compared to either individual ozone
injection or only discharges on the water surface.
○Toshiyuki Kawasaki,
Satoshi Yamada,
Shohei Wakamatsu,
Kouji Koishi and
Junichi Shirabe

13pB-2

Influence of Pulse
Width onDecolorization
Efficiency of Organic
Dye by Discharge
inside Bubble in
Water.

13pB-3Degradation of
Methylene Blue byPulse Surface
Discharge

13pB-4

Water treatment
characteristics ofgaseous cylinderpulsed discharge

13pB-5

Decomposition of
Graduate School of Koichi YASUOKA,
Perfluoro Compounds Science and
Hayato OBO andin Water Using
Engineering, Tokyo Nozomi TAKEUCHI
Discharge Plasmas
Institute ofTechnology
Electret Properties of Department of Home Katsutoshi
Nonwoven Fabrics
Economics Osaka
ANDOH,Masanori
TAKEUCHI,Kiyoshi
made of Bicomponent Seikei College
AIHARA
Fibers

13aC-8

Faculty of○Shuta KAWANO＊, Water purification by discharge inside bubble in water containing organic dye has been
Engineering, Iwate
Katsuyuki TAKAHASHI investigated. The discharge reactor consists of a glass tube and a tungsten wire inserted into
University＊,＊＊, Koichi TAKAKI＊ the glass tube, which is immersed in the water. Room air is injected into the glass tube to
Shishido
and Naoya SATTA＊＊ generate bubbles in the water. The high voltage pulses are generated by a magnetic pulse
Electrostatic, LTD.＊ ＊compression circuit and a pulsed power generator with inductive-energy storage using＊, Faculty ofsemiconductor opening switch. The pulse width is adjusted in the range from 61 to 570 ns. The
Agriculture, Iwate
high voltage is applied to the tungsten wire to generate streamer discharges, which propagate
University＊＊＊
into the bubble from the tip of wire. Indigo carmine is employed as a specimen to evaluate
decolorization efficiency. Potassium nitrate is used to adjust the solution conductivity.
Decolorization rate increases with increasing conductivity of the solution and the applied
voltage. The solution of 1830 µS/cm in conductivity is successfully decolorized. Energy
efficiency for decolorization increases with decreasing ohmic loss by decreasing the applied
voltage and the pulse width.
School of
Takuya BANNO, Ryo Water treatment is one of the industrial applications taking advantage of pulsed power. ElectricalEngineering, The
ONO and Tetsuji ODA discharges produced in atmosphere involve a variety of high energy phenomena, which would be
University of Tokyo
effective to the water treatment. The decomposition of a methylene blue solution using thesurface discharge on water is proposed in this paper. The effect of pulse peak voltage and water
depth is investigated. When water depth is raised, the surface discharge is hardly generated. The
observed results showed that decomposition efficiency of methylene blue increased with theincrease of pulsed peak voltage, input energy and treatment time. Energy efficiency doesn’t
depend on pulsed peak voltage, and it is 1.54 (gkW-1h-1) when decomposition rate is 50 %.
Department of○Yukihiro TAMURA ,chemical and
Takanori TANINO ,environmental
Takayuki OHSHIMAEngineering, Gunma
University

The characteristics of water treatment using discharge plasma irradiation, which was generated
in gaseous cylinder immersed in the treated water, were investigated.
Degradation of organic materials, indigo carmine and oxalic acid was carried out in various
conductivity solutions. Both materials ware successfully degraded by the discharge plasma
irradiation, and high degradation ration were shown in the high conductivity solution. The effectof discharge plasma irradiation depth degradation of organic materials was also
investigated.Degradation ration observed by the plasma in water was higher than that shown by
irradiation of discharge plasma on the water surface.
Efficient decomposition of perfluorocarbons has been successfully demonstrated using DC
plasmas generated in oxygen bubbles. After 180 min treatment, 99% of fluorine atoms weredetached from perfluorooctanoic acid (PFOA) and 68% of them were detachedfrom perfluorooctanesulfonic acid (PFOS) after 480 min operation. The decomposition rate andenergy efficiency showed apparent differences between PFOA and PFOS solutions.
Charging mechanism and penetration efficiency of electret nonwoven fabrics made of two typesof seath-core bicomponent fibers were studied in comparison with the electret nonwoven fabricmade of polypropylene fiber. One type of the bicomponent fibers was consisted of a core ofpolyethylene terephtalate and a seath of polypropylene ,and the other type was consisted of acore of polybuthylene terephtalate and a seath of polypropylene. Charging mechanism of allthese nonwoven fabrics was surface discharge. Penetration efficiencies of the nonwoven fabrics
made of bicomponent fibers changed over time. It is considered this result was caused byelectric charge decay through the analysis of thermally stimulated current.

13aC-9

An EHD Effect withsome polymer
Insulating Coatings.

13aC-10 Performance
Evaluation and
Investigation of
Photocatalyst Layer
Produced byElectrostatic
Atomization
13aC-11 Aggregation andarrangement of gold
nanoparticles by
dielectrophoretic
operation

We have been investigated an EHD effect of silicone oil with additives with insulating coatedelectrodes. When an electrode in coated, the EHD effect has been enhanced. An previous
report, it is shown that different substance of coating makes the different EHD effect. In thisreport, in will be presented that the both electrode are coated by the insulating coating
polymers, but both are different substance. The experimental results suggests that the EHD
effect is drastically effected by the electrostatic characteristics between the driving liquid andthe coating polymers
College of Industrial ○Shota YAZAWA,
A photocatalyst works only because of light. It is very clean and can use semipermanently.
Technology, Nihon
Tomoaki TAMURA,
Therefore, a photocatalyst is environment-friendly. A photocatalyst has a useful characteristic
University
Yusuke KUDO, Tetsuya such as an oxidative decomposition and a super-hydrophilicity. The most effective surface
NAKANISHI
structures of photocatalysts for these useful characteristics are different respectively.
Therefore, it is necessary to tailor the surface structure of a photocatalysts properly. We havebeen studying about fabrication of photocatalyst layer which produced by an electrostatic
atomization. And we measured the oxidative decomposition effect and the super-hydrophiliceffect of the produced photocatalyst. And the optimum condition was investigated.
Tokyo Metropolitan ○Shin Yamazaki,
The assembly of colloidal particles into functional structures is available for nanotechnology
University
Naoki Shirai, Satoshi
applications. Although dielectrophoresis (DEP) is an atractive method for the manipulation and
Uchida, Humiyoshialignment of nanoparticles, understanding of specific DEP properties for nanoparticles is
Tochikubo
essential for the accurate and effective control. In the present work, we measured theabsorbance of colloidal gold solution with DEP operation and observed the shape of assembly ofparticles using SEM. As these results, there were differences of absorbance changing frequencyof DEP. The aggregation of colloid was obtained although the qualification for controlingassembly of nanoparticles should be examined.
College of Industrial 〇Tomoaki TAMURA, In this study, the experimental setup was changed for improving the performance ofTechnology, Nihon
Shota YAZAWA,
photocatalys, and a self-cleaning effect of the photocatalyst was measured.
University
Yusuke KUDO, Tetsuro
OTSUKA
Dep.Electrical
Keisuke Endo andengineering,
Kyoko Yatuzuka
Yamagata University

13aC-12 Evaluation of Selfcleaning Effect of
Photocatalys
Fabricated byElectrostatic
Atomization when theElectrode Distance
Changed.
13aC-13 On the Study of a RF Department ofDischarge Plasma
Electrical andIonic Microphone
Electronic
Engineering ,Kanagawa Instituteof Technology

Hiroshi AKINO

13aC-14 Basic study of
Shizuoka University, Yuta NOMA, et al.
atmosphericInnovation and Joint
microplasma effect on Research Center
pressure loss

This study examined the sensitivity of an atmospheric pressure RF discharge ionic microphone.
DC corona discharge was not fit for ionic microphone, because of the noise it produses
electrically and acoustically. RF discharge that is circuit configuration of harmonic oscillator
produces plasma. Change in frequency of harmonic oscillator for RF discharge corresponds tothe level of sound wave. For the needle electrode protection, inert gas was effective. The
plasma became stable when atmospheric pressure RF discharge flame turned upward and could
increase sensitivity of the ionic microphone.
Atmospheric microplasma effect on pressure loss was experimentally investigated. Microplasma
was generated with a pair of electrodes which covered with dielectric layer and faced eachother, at relatively low discharge voltage of around 1 kV. An AC high voltage energized theelectrodes and could generate microplasma and ionic wind between the electrodes which
impacts the air flow in the acrylic pipe. A manometer was used to measure the pressure
difference at back and front of the electrodes and to observe how the gas flow was changed bypassing through electrodes.

13pA-1

13pA-2

Effect ofGeophysics
Hisashi Shio
Recrystallizing Act on department,
Triboelectrification of Graduate School ofIce
Science, Hokkaidou
University of
Piezoelectric
Graduate School of ○Tetsuo Yoshida,properties of polyEngineering， Kansai Takaaki NAKAI,(lactic acid) multilayer University
Atsuko KATO, andfilm
Yoshiro TAJITSU

13pA-3

Disruption and
Kanagawa Instituteelectrification of aof Technology
droplet of water on
the superhydrophobic
surface

13pA-4

Evaluation ofFaculty ofToshiyuki Sugimoto,hydrophobic property engineering,
Hiroo Adachi, Yoshio
of insulators using
Yamagata University Higashiyama
electrostatic spray

13pA-5The Charge of aRaindrop in theThunderstorm

Kanagawa Instituteof Technology○Hirofumi
SHIMOKAWA and
Tathuya WATANABE

when a couple of ice specimens with identical character on crystal with hot spot was negatively
against the other speismen with cold spot for an initial period of rubbing. However, on morerubbing for a long times the only hot spot is changed from single crystalloid face topolycrystalloid face, and then the potential electricity is got to revese sign on charge.
We produced poly-D-lactic acid (PDLA)/poly-L-lactic acid (PLLA) multilayer films and thenevaluated its physical, mechanical and piezoelectric properties. The piezoelectric constant of
PDLA/PLLA multilayer film increases with increasing the number of layers and is over 100
pC/N. Then, using the impedance analyzer, we observed the piezoelectric resonance curve of
PDLA/PLLA multilayer film. In the measurement, we found the sharp peak in admittance curveand large changing in phase curve, in comparison with that in a single PLLA film. These results
suggest that the realization of large piezoelectricity in PDLA/PLLA multilayer film is affected
strongly by its microscopic multilayer structure. In other words, the PDLA/PLLA multilayer films
share the advantage of being high piezoelectricity.
In the previous report, it was shown that the small droplet was ejected from the water droplet
which drops on the Tefron surface with charged negatively. The small droplet had the negative
charge. This report examined the ejection of the small droplet from the water droplet whichdrops on the superhydrophobic surface. There was the ejection of the small droplet in thecondition that the superhydrophobic surface had not been charged. The charge of the small
droplet increased with the electrification of the surface. These phenomena was related to thehydrophobicity of the surface, and the effect of material and thickness was secondary.

Evaluation method for hydrophobic property of polymer insulators has been developed bysupplying charged fine droplets to the insulator surface using electrostatic spray and measuring
an electric field formed by the charged droplets. Tapped water of 0.02 ml was ejected
continuously from the tip of a cylindrical pipe electrode with 0.52 mm in inner diameter. The
pipe electrode connected to dc high voltage supply penetrated through a hole of a plateelectrode connected to the ground. These electrodes were placed above a test sample at aheight of 20 mm. Electrostatic spray from the tip of the pipe electrode was supplied to thesurface of the test sample. Two surface voltmeters were placed next to the electrostatic
sprayer to measure the electric field formed by the charged spray deposited on the test
surface. The electric field was found to be a function of hydrophobic property of the test
surface aged by the corona discharge. The electric field was drastically increased for polymer
insulator with low contact angle due to aging by corona discharge.
○Takuma ENDO
The paper described electric charge of the raindrop in the thunderstorm.In addition, drift
Hirohumi SHIMOKAWA phenomenon which was a problem of the measuring system was also considered.It was foundthat in the thunderstorm, the result which the charge of the raindrop has large value further the±1pC was dominant.Especially, the charge having more than ±10pC affects the overall chargethat was measured.This result is greatly different from the result in case of usual rain.The drift
phenomenon was greatly improved by exchange to the new cable, and change way of the dry air.