2015 Annual Meeting of The Institute of Electrostatics JapanTokyo Metropolitan University
September 24-25, 2015

25pC-1
September 25th (Fri.), <14:00-15:15>
Room 3Development of volume resistivity sensor using coronacharging〇Yuki YOSHIDA*, Toshiyuki SUGIMOTO*,Nobuo
Yamagata University*,KASUGA DENKI. INC. **Abstract:
Although there is a pencil scratch hardness test to check cure degree ofpainted film, the painted surface will be destructed by the measurement. Anoncontact type cure degree sensor has been developed using noncontact
surface resistivity measurement method. The cure degree sensor can principally
only apply for the paint on the insulating material. In this paper, the system wasimproved by changing corona charger so that the electrostatic potential at thecharging spot can be measured. It was found that the surface potential of thepainted layer on the grounded material was increased with the curing time.

2015 Annual Meeting of The Institute of Electrostatics JapanTokyo Metropolitan University
September 24-25, 2015

25pC-2September 25th (Fri.), <14:00-15:15>
Room 3Fundamental characterisitics of sheet stapler using areelectrostatic forceKeisuke OZAWA
Yamagata University，KASUGA DENKI. INC.

Abstract:
Although there are many sheet products stuck by glue or adhesivematerial， it is very difficult to control mechanically adherence and removal. In
this study， we proposed an electrostatic sheet stapler that can adhere andremove the sheet material by an electrostatic force. The sheet material ischarged by the positive and negative corona charging using two needle and gridelectrodes. It was found that the electrostatic sheet stapler can control
adherence and removal force by the corona charging and charge eliminationand that the withstanding weight is over than 30g.

2015 Annual Meeting of The Institute of Electrostatics JapanTokyo Metropolitan University
September 24-25, 2015

25pC-3September 25th (Fri.), <14:00-15:15>
Room 3

Internal Observation of a Levitated Microdroplet Using
Electrodynamic Balance○Yudai SHIRATORI, Kenichi SHODA, Azuchi HARANO
Graduate School of Science and Technology, Gunma University

Abstract:
The electrodynamic balance (EDB), where single charged particle ordroplet can be levitated in space over periods of hours, provides the opportunity
for in situ observation of aerosol morphologies. Nevertheless, the previously
developed EDB has not been able to image with high-resolution from the sideview. Hence, we developed a novel EDB optimized for the visual access of an
optical microscope. Using this EDB, the deliquescence and solidification
behaviors of the inorganic salt droplet (NaBr) was clearly observed.

2015 Annual Meeting of The Institute of Electrostatics JapanTokyo Metropolitan University
September 24-25, 2015

25pC-4September 25th (Fri.), <14:00-15:15>
Room 3

MEA Fabrication using Cone-jet Mode of Electrostatic Spray○Masayuki EGASHIRA, Satoshi MIKAMI, Kodai YAMAOKA, Shota YAZAWA,Yusuke KUDO, Tetsuo MAKITA
Nihon University, Collage of Industrial Technology,Department of Electrical andElectronic Engineering

Abstract:A direct methanol fuel cell (DMFC) is paid attention which is newgeneration portable power source. It is high cost. Because, DMFC requires aplatinum to generate the power. Performance of DMFC is progress by increasing
surface area of membrane electrode assembly (MEA). We have been studying
about fabrication method of MEA by electrostatic spray. In this study, MEA ofDMFC was fabricated by cone-jet mode of electrostatic spray.

2015 Annual Meeting of The Institute of Electrostatics JapanTokyo Metropolitan University
September 24-25, 2015

25pC-5September 25th (Fri.), <14:00-15:15>
Room 3

Evaluation of charge elimination property of EFD ionizer○Yuta GOTO, and Toshiyuki SUGIMOTO
Graduated School of Science and Engineering, Yamagata University

Abstract:
Ionizers are typically used for eliminating the static charge on targets.
We have proposed an Electric Field Driven(EFD) ionizer which can supply ionsby an electric field in order to eliminate target charge faster than typical airionizer. In this paper, the charge elimination characteristic of EFD ionizer wasinvestigated. The charge elimination speed was significantly increased withincreasing needle voltage and decreasing the distance h between the ionizer
and the target. Converted charge eliminate rate Y is linearly increased with timefor smaller h.