FUJII Masaharu

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Name
FUJII Masaharu
Affiliation
Ehime University
Section
Graduate School of Science and Engineering Materials Science and Biotechnology
Job title
Professor

Education

 
 
 - 
1979
Graduate School, Division of Engineering, Hiroshima University
 
 
 - 
1977
Faculty of Engineering, Ehime University
 

Published Papers

 
Ihori Haruo, Sasaki Shinpei, Maeda Ryuuji, Jeon Hyeon-Gu, Fujii Masaharu
IEEJ Transactions on Industry Applications   138(9) 758-759   2018
<p>We have studied the electrical treeing generated in silicone gel used as an encapsulant for power electronics modules. The treeing which consist of bubbles and strings was named Pearl-chain-type treeing. Under AC voltage application, the bubble...
井堀春生, 児玉有生, JEON Hyeon-Gu, 藤井雅治
電気学会論文誌 A   137(4) 215‐220(J‐STAGE)   2017   [Refereed]
井堀春生, 児玉有生, 藤井雅治, JEON Hyeon-gu, 原滉貴, 大崎晃輝
電気学会論文誌 D   137(5) 458‐459(J‐STAGE)   2017   [Refereed]
Measurement of AC Electric Field in Transformer Oil using Kerr Effect
2017 INTERNATIONAL SYMPOSIUM ON ELECTRICAL INSULATING MATERIALS (ISEIM), VOLS 1 & 2   255-258   2017   [Refereed]
Kerr Optical Measurement of Electric Field Strength in Gelatinous Liquid
2017 INTERNATIONAL SYMPOSIUM ON ELECTRICAL INSULATING MATERIALS (ISEIM), VOLS 1 & 2   65-68   2017   [Refereed]
Dependence Of Pearl-chain Type Tree In Silicone Gel On The Waveform And The Frequency Of Applied Voltage
2017 INTERNATIONAL SYMPOSIUM ON ELECTRICAL INSULATING MATERIALS (ISEIM), VOLS 1 & 2   727-730   2017   [Refereed]
田中祐輔, 永岡祐二, Jeon Hyeon-Gu, 藤井雅治, 井堀春生
電気学会論文誌 C   136(10) 1420‐1421(J‐STAGE)   2016   [Refereed]
Masaharu Fujii, Ryosuke Ueda, Hyeon Gu Jeon, Haruo Ihori
Proceedings of the International Symposium on Electrical Insulating Materials   319-322   Jan 2014   [Refereed]
Pearl-chain-type trees under AC voltage have been observed using a high-speed camera. When AC voltage (60Hz) was applied, a bubble was appeared at a tip of needle electrode in silicone gel. The bubble oscillated with 120Hz. After increasing the ap...
Haruo Ihori, Mitsuru Oka, Yuji Nagaoka, Masaharu Fujii
Proceedings of the International Symposium on Electrical Insulating Materials   342-345   Jan 2014   [Refereed]
In dielectric liquids subjected to a high electric field, space charges are generated due to various reasons, for example, by the injection of charges from electrodes or by ionization of the impurities and molecules. It is necessary to obtain info...
Masaharu Fujii, Haruo Ihori, Hyeon Gu Jeon
Jurnal Teknologi (Sciences and Engineering)   64(4) 59-62   Oct 2013   [Refereed]
The tree growth has been usually classified to three stages; inception, propagation and runaway stage under AV voltage. When the two-dimensional (2-D) specimen of silicone rubber was used, the propagation stage was divided to two stages: straight ...
Haruo Ihori, Hayato Nakao, Masaki Takemura, Mitsuru Oka, Hyeon Gu Jeon, Masaharu Fujii
Jurnal Teknologi (Sciences and Engineering)   64(4) 19-22   Oct 2013   [Refereed]
In order to diagnose the effectiveness of electrical insulation, it is necessary to obtain information regarding the electric field distribution in insulating materials. We have investigated the measurement of electric field vector distributions i...
Ihori Haruo, Nakao Hayato, Fujii Masaharu
Jpn J Appl Phys   51(8) 80204-080204-3   Aug 2012
It is important to obtain information about electric field and space charge distributions. We have investigated the measurement of electric field vector distributions in liquid dielectrics using an original method. We developed an optical system t...
Haruo Ihori, Hayato Nakao, Masaharu Fujii
Japanese Journal of Applied Physics   51    Aug 2012
It is important to obtain information about electric field and space charge distributions. We have investigated the measurement of electric field vector distributions in liquid dielectrics using an original method. We developed an optical system t...
Masaharu Fujii, Yuka MacHiya, Haruo Ihori
Journal of Physics: Conference Series   358    May 2012
Conducting polymers with neuron-like pattern has been polymerized by controlling polymerization conditions. These conducting polymers have been connected each other to prepare network. If the synapse function can be added to the network, artificia...
Haruo Ihori, Yuki Inagawa, Naohiro Ito, Masaharu Fujii, Hideki Ninomiya
Electrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi)   179 8-14   Apr 2012
Though it is said that the paperless age arrived with the spread of personal computers, the amount of office paper used shows no tendency to decrease. In general, used paper is recovered and recycled in order to preserve the environment. But labor...
Naoya Masuichi, Masaharu Fujii, Haruo Ihori
Electronics and Communications in Japan   95 8-15   Feb 2012
Computed tomography (CT) has been used for industrial application as well as its principal development in the medical field. We have investigated the measurement of nonuniform electric field vector distributions in liquid dielectrics using an orig...
Haruo Ihori, Masaki Takemura, Naoya Masuichi, Hideo Yoshihara, Masaharu Fujii
Proceedings - IEEE International Conference on Dielectric Liquids      Nov 2011
This It is necessary for electrical insulation diagnosis to obtain information about the electric field distribution in insulation materials. We have investigated the measurement of nonuniform electric field vector distributions in liquid dielectr...
Haruo Ihori, Sei Ninomiya, Masaharu Fujii
Electronics and Communications in Japan   94 45-51   Sep 2011
Electrical insulation diagnosis requires that we obtain information about the electric field distribution and the space charge distribution in insulating materials. We have measured nonuniform electric field vector distributions in liquid dielectr...
MASUICHI Naoya, FUJII Masaharu, IHORI Haruo
IEEJ Transactions on Fundamentals and Materials   131(6) 472-477   Jun 2011
Computed tomography (CT) method has been used for industrial application as well as it has been mainly developed in a medical field. We have investigated the measurement of nonuniform electric field vector distributions in liquid dielectrics using...
Haruo Ihori, Masaki Takemura, Naoya Masuichi, Hayato Nakao, Saki Ito, Masaharu Fujii
Proceedings of the International Symposium on Electrical Insulating Materials   289-292   Jan 2011
We have investigated the measurement of nonuniform electric field vector distributions in liquid dielectrics using an original method based on electrooptic Kerr effect and CT method. Recently, we developed an optical system that could measure elec...
Masaharu Fujii, Shota Akamatsu, Haruo Ihori
Proceedings of the International Symposium on Electrical Insulating Materials   152-155   Jan 2011
The Development of breakdown in solid/gel insulators under AC voltage has been observed using the different mixed ratio silicone rubbers. Discharge phenomena in double composite silicone rubber has been also observed and the its model has been sug...
Haruo Ihori, Atsushi Ohnishi, Sei Ninomiya, Masaharu Fujii
Electrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi)   172 1-9   Jul 2010
For electrical insulation diagnosis, it is necessary to obtain information about the electric field distribution and the space charge distribution in insulation materials. We have investigated the measurement of nonuniform electric field vector di...
Sachiko Matsumoto, Haruo Ihori, Masaharu Fujii
Synthetic Metals   159 2296-2298   Nov 2009
Conducting polymers has been polymerized on a bottom of the vessel/cell under certain conditions, and the patterns of two-dimensional (2-D) conducting polymer have become fractal. A neuron-like conducting polymer can be fabricated by changing the ...
Haruo Ihori, Sei Ninomiya, Masaharu Fujii
IEEJ Transactions on Fundamentals and Materials   129    Jul 2009
It is necessary for electrical insulation diagnosis to obtain information about the electric field distribution and the space charge distribution in insulation materials. We have measured nonuniform electric field vector distributions in liquid di...
Haruo Ihori, Yuki Inagawa, Naohiro Ito, Masaharu Fujii, Hideki Ninomiya
IEEJ Transactions on Fundamentals and Materials   129    Jul 2009
Though it is said to the paper-less age with the spread of personal computer, amount of office papers to be used doesn't have tendency to decrease. In general, used papers are recovered and recycled in order to preserve the environment. The labor ...
IHORI Haruo, NINOMIYA Sei, FUJII Masaharu
IEEJ Transactions on Fundamentals and Materials   129(4) 307-312   Apr 2009
It is necessary for electrical insulation diagnosis to obtain information about the electric field distribution and the space charge distribution in insulation materials. We have measured nonuniform electric field vector distributions in liquid di...
IHORI Haruo, INAGAWA Yuki, ITO Naohiro, FUJII Masaharu, NINOMIYA Hideki
IEEJ Transactions on Fundamentals and Materials   129(4) 205-210   Apr 2009
Though it is said to the paper-less age with the spread of personal computer, amount of office papers to be used doesn't have tendency to decrease. In general, used papers are recovered and recycled in order to preserve the environment. The labor ...
Yuu Ogawa, Fumihiko Sugino, Haruo Ihori, Masaharu Fujii
Proceedings of the International Symposium on Electrical Insulating Materials   657-660   Dec 2008
Trees in silicone rubber has been investigated using 2-D specimen. The tree is classified two, i.e. 1st and 2nd tree. The behaviors of these trees have been observed by changing the ratio of two components of silicone rubber. The 1st tree is usual...
Haruo Ihori, Sei Ninomiya, Atsushi Ohnishi, Masaharu Fujii
Proceedings of the International Symposium on Electrical Insulating Materials   617-620   Dec 2008
It is necessary for electrical insulation diagnosis to obtain information about the electric field distribution and the space charge distribution in insulation materials. We have investigated the measurement of nonuniform electric field vector dis...
Fumihiko Sugino, Yuu Ogawa, Haruo Ihori, Masaharu Fujii
IEEJ Transactions on Fundamentals and Materials   128    Dec 2008
The development mode of the AC tree can be classified into three modes; (i) straight mode, (ii) isotropic mode and (iii) selected branch mode. The development of the tree in diffusion mode means that an envelope of the tips of the branches spreads...
Haruo Ihori, Atsushi Ohnishi, Sei Ninomiya, Masaharu Fujii
IEEJ Transactions on Fundamentals and Materials   128    Dec 2008
For electrical insulation diagnosis, it is necessary to obtain information about the electric field distribution and the space charge distribution in insulation materials. We have investigated the measurement of nonuniform electric field vector di...
SUGINO Fumihiko, OGAWA Yuu, IHORI Haruo, FUJII Masaharu
IEEJ Transactions on Fundamentals and Materials   128(4) 263-267   Apr 2008
The development mode of the AC tree can be classified into three modes; (i) straight mode, (ii) isotropic mode and (iii) selected branch mode. The development of the tree in diffusion mode means that an envelope of the tips of the branches spreads...
IHORI Haruo, OHNISHI Atsushi, NINOMIYA Sei, FUJII Masaharu
IEEJ Transactions on Fundamentals and Materials   128(4) 209-215   Apr 2008
For electrical insulation diagnosis, it is necessary to obtain information about the electric field distribution and the space charge distribution in insulation materials. We have investigated the measurement of nonuniform electric field vector di...
FUJII Masaharu, IHORI Haruo
IEICE transactions on electronics   89(12) 1732-1734   Dec 2006
Writing/non-writing of composite conducting polymer (polypyrrole/poly(3-hexylthiophene)) have been investigated using composite conducting polymer. Writing has been made in two processes: pretreatment and dropping ethanol. The unipolar signal (10V...
Memory Effect of Composite Neuron-type Conducting Polymer Network
The International Conference on Science and Technology of Synthetic Metals,CD-ROM   CD-ROM,112-TH   2006
FUJII Masaharu, IHORI Haruo
IEICE Transactions on Electronics (Institute of Electronics, Information and Communication Engineers)   E89-C(12) 1732-1734   2006   [Refereed]
M. Fujii, S. Ohmori, J. Maeda, H. Ihori
Proceedings of the International Symposium on Electrical Insulating Materials   3 544-547   Oct 2005
Although electrical trees in silicon rubbers silicone rubbers have been observed, AC trees have many small branches and thus it is hard to measure it three-dimensionally. In order to observe the patterns of AC trees, two-dimensional sample is used...
Haruo Ihori, Yoshitaka Ishihara, Syunpei Yano, Masaharu Fujii
Proceedings of the International Symposium on Electrical Insulating Materials   3 564-567   Oct 2005
For electrical insulation diagnosis, it is necessary to obtain information about the electric field distribution and the space charge distribution in insulation materials. We have investigated the measurement of nonuniform electric field vector di...
Masaharu Fujii, Haruo Ihori, Kiyomitsu Arii
IEICE Transactions on Electronics   E87-C 174-178   Feb 2004
Two-dimensional (2D) patterns of a conducting polymer have been prepared electrochemically. The patterns depend on the conditions of electrochemical polymerization. Concerning the polymerization reaction and the growth process of conducting polyme...
M. Fujii, S. Ohmori, H. Ihori, K. Arii
Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials   3 879-882   Oct 2003
Patterns of electrical trees in insulators have been investigated numerically using fractal dimension. The complexity of the pattern of the tree increases with applied voltage. The degree of the complexity depends on the polarity of the applied vo...
M. Fujii, K. Kushida, H. Ihori, K. Arii
Thin Solid Films   438-439 356-359   Aug 2003
Conducting polymers with fractal patterns have been polymerized electrochemically under some conditions. The pattern of neuron-like conducting polymer has been prepared by controlling the polymerization conditions. Furthermore, the network of neur...
Akumu Aloys O., Masai Hajime, Adachi Futoshi, Ozaki Ryotaro, Ihori Haruo, Fujii Masaharu, Arii Kiyomitsu
Jpn J Appl Phys   42(8) 5347-5352   Aug 2003
The focus of acoustic partial discharge measurements is based on the discharge location. The tank wall thickness of a power transformer is usually larger than the wavelength of the signal, and therefore possesses a path for the signal, thereby com...
Aloys O. Akumu, Aloys O. Akumu, Hajime Masai, Futoshi Adachi, Ryotaro Ozaki, Haruo Ihori, Masaharu Fujii, Kiyomitsu Arii
Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers   42 5347-5352   Aug 2003
The focus of acoustic partial discharge measurements is based on the discharge location. The tank wall thickness of a power transformer is usually larger than the wavelength of the signal, and therefore possesses a path for the signal, thereby com...
Akumu Aloys O., Masai Hajime, Adachi Futoshi, Ozaki Ryotaro, Ihori Haruo, Fujii Masaharu, Arii Kiyomitsu
Jpn J Appl Phys   42(6) 3686-3689   Jun 2003
The focus of acoustic partial discharge measurements is based on a partial discharge source location, and therefore knowledge of the acoustic signal propagation path is important. Numerical simulation of wave propagation in a model transformer is ...
Aloys O. Akumu, Aloys O. Akumu, Hajime Masai, Futoshi Adachi, Ryotaro Ozaki, Haruo Ihori, Masaharu Fujii, Kiyomitsu Arii
Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers   42(6) 3686-3689   Jun 2003
The focus of acoustic partial discharge measurements is based on a partial discharge source location, and therefore knowledge of the acoustic signal propagation path is important. Numerical simulation of wave propagation in a model transformer is ...
IHORI Haruo, HIROMOTO Kunio, FUJII Masaharu, ARII Kiyomitsu
IEEJ Transactions on Fundamentals and Materials   123(6) 600-601   Jun 2003
We have already reported on reconstructions of symmetrical and nonsymmmetrical electric field vector distribution using Kerr electrooptic effect and our unique reconstruction method modified computed tomography technique. This reconstruction techn...
Thin Solid Films   438-439 356-359   2003
Markus Zahn, Afsin Üstündaǧ, H. Ihori, M. Fujii, K. Arii
IEEE Transactions on Dielectrics and Electrical Insulation   9 972-974   Dec 2002
H. Ihori, M. Ujike, M. Fujii, K. Arii
IEEE International Conference on Conduction and Breakdown in Dielectric Liquids, ICDL   281-284   Dec 2002
We have investigated the measurement of nonuniform electric field vector distributions in liquid dielectrics using the optical method based electrooptic Kerr effect. Our reconstruction technique of the electric field distribution has a merit that ...
FUJII Masaharu, NAKATSU Teruaki, IHORI Haruo, ARII Kiyomitsu
The transactions of the Institute of Electronics, Information and Communication Engineers. C   85(12) 1141-1148   Dec 2002
導電性高分子を電解重合法を用いて重合する際に重合条件を選べば,枝分かれ成長する導電性高分子を得ることができる.特に,重合中,条件を変化させていけば,ニューロン型の導電性高分子が得られる.このニューロン型導電性高分子は接続可能で,ネットワーク状のものを得ることもでき,このネットワークに導電性高分子の機能を付加することにより,新しいデバイスの可能性が出てくる.ネットワークの形は重合条件に依存するが,これは環境条件にも依存するということで,環境を形態に取り込んだデバイスが考えられる.形状を考慮す...
Haruo Ihori, Masaharu Fujii, Kiyomitsu Arii
Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers   41(8) 5478-5479   Aug 2002
We have been investigating the determination of three-dimensional electric field distributions using the reconstruction technique modified by the computed tomography technique and the Kerr electrooptic method. For the reconstruction using this tec...
Haruo Ihori, Kotaro Tanino, Takao Kawasaki, Masaharu Fujii, Kiyomitsu Arii
Electrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi)   139 9-15   Apr 2002
We have already reported on reconstructions of the symmetrical and nonsymmetrical electric field vector distribution using the Kerr electrooptic effect and our unique reconstruction method, a modified computed tomography technique. This reconstruc...
Haruo Ihori, Masaharu Fujii, Kiyomitsu Arii
IEEE Transactions on Dielectrics and Electrical Insulation   9 56-60   Feb 2002
We have carried out measurements of three-dimensional nonuniform electric field distribution using Kerr electrooptic measurement with a reconstruction technique. A conventional measurement system was composed of He-Ne laser, a polarizer, a quarter...
FUJII Masaharu, IHORI Haruo, ARII Kiyomitsu
The Transactions of the Institute of Electrical Engineers of Japan. A   122(2) 198-204   Feb 2002
A. O. Akumu, F. Adachi, N. Kawaguchi, R. Ozaki, H. Ihori, M. Fujii, K. Arii
Conference Record of IEEE International Symposium on Electrical Insulation   183-186   Jan 2002
In this paper, we present a three-dimensional numerical simulation of partial discharge (PD) acoustic wave propagation that has been developed to provide time-domain signal representation in a model transformer. The numerical modeling of acoustic ...
H. Ihori, M. Ujike, K. Hiromoto, M. Fujii, K. Arii
Proceedings of the International Symposium on Electrical Insulating Materials   415-418   Dec 2001
The reconstruction technique of a electric field distribution which we developed has a merit that the strength and the direction of the electric field at each position on any measured plane can be determined. In order to reconstruct a field vector...
Ryotaro Ozaki, Aloys Oriedi Akumu, Haruo Ihori, Masaharu Fujii, Kiyomitsu Arii
Proceedings of the International Symposium on Electrical Insulating Materials   880-883   Dec 2001
The location of partial discharge is tried using the ultrasonic wave of partial discharge. At present, the experiment is carried out in the simple model of the transformer. Peaks of the simulated ultrasonic wave appeared in the time which was almo...
M. Fujii, T. Iwase, H. Ihori, K. Arii
Proceedings of the International Symposium on Electrical Insulating Materials   615-618   Dec 2001
Patterns of electrical trees in insulators is estimated numerically by fractal dimension. However they are not simple fractal but multifractal. They can be estimated by global spectrum and singularity, which do not have local information clearly. ...
Aloys O. Akumu, Noboru Kawaguchi, Ryotaro Ozaki, Haruo Ihori, Masaharu Fujii, Kiyomitsu Arii
Proceedings of the International Symposium on Electrical Insulating Materials   583-586   Dec 2001
Many researchers have studied the Partial Discharge (PD) source location in transformers using acoustical methods. However, most of these studies have treated the transformer as a homogeneous medium, thus rendering the location of discharges insid...
FUJII Masaharu, CHIKARAISHI Hiroshi, IHORI Haruo, ARII Kiyomitsu
The Transactions of the Institute of Electrical Engineers of Japan. A   121(6) 561-566   Jun 2001
M. Fujii, H. Ihori, K. Arii, M. Onoda
Synthetic Metals   119 483-484   Mar 2001
The learning effect of the neuron-like conducting polymer is considered to produce to the network device with the shape and functions of the neuron. The conducting polymer gel has been investigated to add the learning effect on the path between th...
IHORI Haruo, TANINO Kotaro, KAWASAKI Takao, FUJII Masaharu, ARII Kiyomitsu
The Transactions of the Institute of Electrical Engineers of Japan. A   121(3) 243-248   Mar 2001
Ihori Haruo, Kawasaki Takao, Tanino Kotaro, Fujii Masaharu, Arii Kiyomitsu
Jpn J Appl Phys   40(2) 914-915   Feb 2001
We have investigated nonuniform electric field vector distributions in liquid dielectrics. We have already reported on measurements of symmetrical and nonsymmetrical electric field vector distribution using the Kerr electrooptic effect and our uni...
H. Ihori, T. Kawasaki, K. Tanino, M. Fujii, K. Arii
Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers   40 914-915   Feb 2001
We have investigated nonuniform electric field vector distributions in liquid dielectrics. We have already reported on measurements of symmetrical and nonsymmetrical electric field vector distribution using the Kerr electrooptic effect and our uni...
FUJII M, IHORI H, ARII K
thin solid films   393(1/2) 393-398   2001
Haruo Ihori, Kotaro Tanino, Masaharu Fujii, Kiyomitsu Arii
Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials   1 427-430   Dec 2000
We have investigated nonuniform electric field vector distributions in liquid dielectrics. We have already reported on measurements of symmetrical and nonsymmetrical electric field vector distribution using Kerr electrooptic effect and our unique ...
Masaharu Fujii, Haruo Ihori, Kiyomitsu Arii
Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials   1 235-238   Dec 2000
Trees in insulators have been investigated using fractal geometry. The complexity of the tree is estimated by only one number of the fractal dimension. In some cases that the local shape of the branches of the trees is different in another branche...
M. Fujii, H. Ihori, K. Arii
IEEE International Conference on Conduction and Breakdown in Dielectric Liquids, ICDL   148-151   Dec 1999
Discharge patterns in liquid can be analyzed by multifractal. The growing mode of the pattern of discharge also classified using global spectrum. It is, however, difficult to understand the curve of its global spectrum, because its spectrum loses ...
Haruo Ihori, Kenichi Ikeda, Masaharu Fujii, Kiyomitsu Arii
IEEE International Conference on Conduction and Breakdown in Dielectric Liquids, ICDL   345-348   Dec 1999
We have been carried out the measurement of three-dimensional nonuniform electric field distributions using Kerr electrooptic measurement with a reconstruction technique. A conventional optical system was composed of a He-Ne laser, a polarizer, a ...
IHORI Haruo, IKEDA Kenichi, FUJII Masaharu, ARII Kiyomitsu
IEEJ transactions on fundamentals and materials   119(8) 1097-1102   Aug 1999
M. Fujii, T. Takahashi, H. Ihori, K. Arii, K. Yoshino
Synthetic Metals   101 397-398   May 1999
Neuron-like conducting polymers have been prepared electrochemically. Many conducting polymers with fractal patterns have been connected. Input pulse was divided into two. One was actual input signal and another one was applied a third electrode t...
M. Fujii, N. Takahashi, H. Ohnishi, K. Yoshino
Synthetic Metals   85 1409-1410   Mar 1997
Two types of neuron-like conducting polymers, polypyrrole, have been prepared electrochemically. One is 2-dimensional growth type and another is 3-dimensional one. The former has consisted of more than two fractal conducting polymers and conductiv...
M. Fujii, S. Kubota, T. Saito, H. Ohnishi, K. Arii, K. Yoshino
Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials   1 418-421   Jan 1997
Electrical trees in insulators have been measured three-dimensionally using CT method. This method needs many projected data of tree. If development of tree is observed three-dimensionally, it takes much time to get many pictures in many different...
Haruo Ihori, Shigenori Ueno, Kenji Miyamoto, Masaharu Fujii, Kiyomitsu Arii
Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials   2 1121-1124   Jan 1997
We carried out the measurement of the three-dimensional nonuniform electric field distribution in a non-symmetrical electrode system. An optical system was composed of a He-Ne laser, a polarizer, a quarter-wave plate, an experimental cell, an anal...
Masaharu Fujii, Takenori Izawa, Hideomi Ohnishi, Kiyomitsu Arii, Katsumi Yoshino
Jpn. J. Appl. Phys.   35(1A) 290-293   1996
M. Fujii, T. Saito, H. Ohnishi, K. Arii, K. Yoshino
IEEE International Conference on Conduction &amp; Breakdown in Solid Dielectrics   304-308   Dec 1995
The developments of electrical trees in insulators have been investigated (Dissado et al., 1992). The analysis of tree mechanism in particular has advanced after the concept of fractal was suggested. The patterns of the trees can be estimated nume...
FUJII M, ARII K, YOSHINO K
Synthetic Metals   71(1/3) 2223-2224   1995
M. Onoda, M. Fujii, K. Yoshino
Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials   1 258-261   Dec 1994
The electrochemical and optical properties of poly(isothianaphthene), PITN, during electrochemical doping have been investigated by cyclic voltammetry and optical absorption spectrum measurements. PITN can be reversibly n-and p-type doped without ...
Masaharu Fujii, Kiyomitsu Arii, Katsumi Yoshino
Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials   1 424-427   Dec 1994
Impulse trees in insulators have been measured three-dimensionally to investigate the development mechanism of trees. Since a usually observed tree is a projected one on the plane, the projected tree has pretended branches and the directions of it...
Sadahito Uto, Haruo Ihori, Masaharu Fujii, Kiyomitsu Arii
Japanese Journal of Applied Physics   32(10) 4854-4855   Jan 1993
An optical method using the Kerr effect is useful to measure electric fields in dielectric liquids without disturbing the field. A conventional relation of the Kerr effect cannot be applied to the measurement of a three-dimensional field, the dire...
Fractal and Electrical Phenomena
Journal of the Society of Electrical Materials Engineering   2(1) 3-18   1993
FUJII M, ARII K, YOSHINO K
Journal of the Electrochemical Society   140(7) 1838-1842   1993
TWO-DIMENSIONAL GROWTH OF POLYPYRROLE WITH A FRACTAL PATTERN AND DEPENDENCE OF PATTERN ON POLYMERIZATION CONDITION
Synthetic Metals.   55(2-3) 1159-1164   1993
Haruo Ihori, Masaharu Fujii, Sakae Nishimoto, Isamu Kitani, Kiyomitsu Arii
Japanese Journal of Applied Physics   31(6) 1901-1904   Jan 1992
It is very difficult to measure nonuniform electric field distributions in insulators. The optical measurements of the electric field were investigated in nitrobenzene using the Kerr effect. A sphere-to-sphere electrode or a sphere-to-plane electr...
藤井雅治, 井沢武紀, 有井清益, 吉野勝美
The Transaction of IEE of Japan   112(6) 112-A-603   Jun 1992
藤井雅治, 有井清益, 吉野勝美
The Transaction of IEE of Japan   112(5) 112-A-409   May 1992
M. Fujii, K. Arii, K. Yoshino
Journal of Physics: Condensed Matter   3 7207-7211   Dec 1991
Dendrite, of fractal pattern, has been observed on the surface of the conducting polymer polypyrrole, after an 'undoping' process. Metal ions have been deposited on the surface of the conducting polymer by applying a voltage for undoping. The frac...
K. Arii, H. Ihori, S. Nishimoto, M. Fujii, I. Kitani
1206-1209   Dec 1991
The authors have carried out optical measurements of the field-strength map in a liquid dielectric using the Kerr effect. Since electric lines of force are curved in a nonuniform field, the field strength can be measured on a plane which divides t...
Masaharu Fujii, Kiyomitsu Arii, Katsumi Yoshino
1246-1249   Dec 1991
A conducting polymer, polypyrrole, with a treelike pattern has been prepared by an electrochemical polymerization method using a point-circle electrode system. The patterns have a characteristic of self-similarity which is called a fractal. The pa...
K. Arii, M. Fujii, I. Kitani
IEEE Transactions on Electrical Insulation   26 726-731   Jan 1991
Breakdown voltages of t-decalin and cyclohexane were measured at various gas pressures for positive point. Breakdown voltage of argon-dissolved t-decalin was 1.2 to 1.3 × as high as that of the ammonia-dissolved one; i.e. the ammonia molecules cou...
IEEE Trans. Elec. Insul.   26   1991
J. Phys. : Condens. Matter   3   1991
IEEE Trans. Elec. Insul.   26   1991
K. Arii, M. Fujii, I. Kitani
579-583   Dec 1990
Breakdown voltage of trans-decalin and cyclohexane was measured at various pressures. After degassing the liquid by freeze-pump thaw cycles, it was transferred in vacuum to the test cell containing the electrodes, and the cell was sealed with argo...
M. Fujii, K. Arii, K. Yoshino
Journal of Physics: Condensed Matter   2 6109-6118   Dec 1990
Poly(3-dodecylthiophene) with a fractal pattern has been prepared by an electrochemical method on the surface of a solution. The fractal dimension has been calculated by four methods. At an applied voltage of about 10 V, the fractal dimension indi...
K. Arii, M. Fujii, I. Kitani
345-349   Dec 1990
A point electrode of a 0.1-mm-diam. tungsten wire was enclosed by a of about approximately 1-mm diam. gas bubble. After a voltage pulse application, the bubble was deformed and then pushed to the plane electrode in the tested liquid. At the negati...
YOSHINO Katsumi, PARK Dae Hee, PARK Bok Kee, FUJII Masaharu, SUGIMOTO Ryu-ichi
Japanese journal of applied physics. Pt. 2, Letters   27(8) L1410-L1413   Aug 1988
The electrical conductivity of poly(3-alkylthiophene)s such as poly(3-butylthiophene), poly(3-hexylthiophene), poly(3-octylthiophene), poly(decylthiophene) and poly(dodecylthiophene) increases with increasing temperature. However, after attaining ...

Conference Activities & Talks

 
豊福大地, 藤井雅治, 井堀春生, 谷口裕一, 浜崎新一, JEON Hyeon‐Gu
電気学会全国大会講演論文集(CD-ROM)   1 Mar 2019   
佐々木慎平, 川相有佑, JEON Heon‐Gu, 藤井雅治, 井堀春生
電気学会全国大会講演論文集(CD-ROM)   1 Mar 2019   
佐々木慎平, 川相有佑, JEON Heon‐Gu, 藤井雅治, 井堀春生
電気学会全国大会講演論文集(CD-ROM)   1 Mar 2019   
藤井雅治, 井堀春生, JEON Hyeon‐Gu
電気学会全国大会講演論文集(CD-ROM)   1 Mar 2019   
佐々木慎平, 可藤安里, JEON Hyeon‐Gu, 藤井雅治, 井堀春生
電気学会研究会資料   14 Dec 2018   
岡島洋介, 藤井雅治, 井堀春生
電気関係学会四国支部連合大会講演論文集(CD-ROM)   15 Sep 2018   
豊福大地, 藤井雅治, 井堀春生, JEON H‐G.
電気関係学会四国支部連合大会講演論文集(CD-ROM)   15 Sep 2018   
佐々木慎平, 藤井雅治, 井堀春生
電気関係学会四国支部連合大会講演論文集(CD-ROM)   15 Sep 2018   
谷口裕一, 藤井雅治, 井堀春生, JEON H‐G.
電気関係学会四国支部連合大会講演論文集(CD-ROM)   15 Sep 2018   
近藤亮介, 藤井雅治, JEON Hyeon‐Gu, 井堀春生, 大竹泰智, 梅本貴弘
電気電子絶縁材料システムシンポジウム予稿集   10 Sep 2018   
豊福大地, 藤井雅治, 井堀春生, JEON Hyeon‐gu
電気電子絶縁材料システムシンポジウム予稿集   10 Sep 2018   
佐々木慎平, 藤井雅治, 井堀春生, JEON Hyeon‐Gu
電気電子絶縁材料システムシンポジウム予稿集   10 Sep 2018   
植田和樹, JEON Hyeon‐Gu, 井堀春生, 藤井雅治
応用物理学会秋季学術講演会講演予稿集(CD-ROM)   5 Sep 2018   
高畑太希, JEON Hyeon‐Gu, 細川雄史, 清水純, 井堀春生, 藤井雅治
応用物理学会秋季学術講演会講演予稿集(CD-ROM)   5 Sep 2018   
藤井雅治, 岡島洋介, 豊福大地, 井堀春生, JEON Hyeon‐Gu
電気学会基礎・材料・共通部門大会講演論文集(CD-ROM)   4 Sep 2018   
井堀春生, 則内怜欧, JEON Hyeon‐Gu, 藤井雅治
電気学会基礎・材料・共通部門大会講演論文集(CD-ROM)   4 Sep 2018   
近藤亮介, 吉村佳祐, 藤井雅治, JEON Hyeon‐Gu, 井堀春生, 大竹泰智, 梅本貴弘
電気学会全国大会講演論文集(CD-ROM)   5 Mar 2018   
浜崎新一, 藤井雅治, 井堀春生, JEON Hyeon‐Gu
電気学会全国大会講演論文集(CD-ROM)   5 Mar 2018   
佐々木慎平, 前田竜二, 藤井雅治, 井堀春生, JEON Hyeon‐Gu
電気学会全国大会講演論文集(CD-ROM)   5 Mar 2018   
藤井雅治, 豊福大地, 井堀春生, JEON Hyeon‐Gu
電気学会全国大会講演論文集(CD-ROM)   5 Mar 2018   
井堀春生, 佐々木慎平, 前田竜二, Jeon Hyeon-Gu, 藤井雅治
電気学会論文誌 D   2018   
Transmission of neurotransmitter using two-conducting-polymers system
Masaharu Fujii, Shinichi Hamasaki, Daichi Toyofuku, Haruo Ihori, and Hyeon-gu Jeon
International Conference on Science and Technoology of Synthetic Metals 2018   2018   
浜崎新一, 藤井雅治, 井堀春生, JEON H.G.
電気関係学会四国支部連合大会講演論文集(CD-ROM)   16 Sep 2017   
藤井雅治, 井堀春生, JEON H.‐G.
電気関係学会四国支部連合大会講演論文集(CD-ROM)   16 Sep 2017   
佐々木慎平, 藤井雅治, 井堀春生, JEON H.‐G.
電気関係学会四国支部連合大会講演論文集(CD-ROM)   16 Sep 2017   
谷口裕一, 藤井雅治, 井堀春生, JEON H‐G.
電気関係学会四国支部連合大会講演論文集(CD-ROM)   16 Sep 2017   
加藤竜策, 相田健太郎, 井堀春夫, JEON H., 藤井雅治
電気関係学会四国支部連合大会講演論文集(CD-ROM)   16 Sep 2017   
清水純, JEON Hyeon‐Gu, 植田和樹, 可藤青里, 井堀春生, 藤井雅治
応用物理学会秋季学術講演会講演予稿集(CD-ROM)   25 Aug 2017   
可藤青里, JEON Hyeon‐Gu, 植田和樹, 清水純, 井堀春生, 藤井雅治
応用物理学会秋季学術講演会講演予稿集(CD-ROM)   25 Aug 2017   
植田和樹, JEON Hyeon‐Gu, 可藤青里, 清水純, 井堀春生, 藤井雅治
応用物理学会秋季学術講演会講演予稿集(CD-ROM)   25 Aug 2017   
浜崎新一, 谷口裕一, 藤井雅治, 井堀春生, JEON Hyung
電気学会全国大会講演論文集(CD-ROM)   5 Mar 2017   
吉村佳祐, 近藤亮介, 八須悠介, JEON Hyen‐gu, 藤井雅治, 井堀春生, 梅本貴弘, 大竹泰智, 釣本崇夫
電気学会全国大会講演論文集(CD-ROM)   5 Mar 2017   
則内怜欧, 田中祐輔, 横山智謙, 岡村昌樹, JEON H.‐G., 藤井雅治, 井堀春生
電気学会全国大会講演論文集(CD-ROM)   5 Mar 2017   
井堀春生, 児玉有生, JEON Hyung, 藤井雅治
電気学会全国大会講演論文集(CD-ROM)   5 Mar 2017   
可藤青里, JEON Hyeon‐Gu, 植田和樹, 清水純, 井堀春生, 藤井雅治
応用物理・物理系学会中国四国支部合同学術講演会講演予稿集   2017   
清水純, JEON Hyeon‐Gu, 植田和樹, 可藤青里, 井堀春生, 藤井雅治
応用物理・物理系学会中国四国支部合同学術講演会講演予稿集   2017   
植田和樹, JEON Hyeon‐Gu, 可藤青里, 清水純, 井堀春生, 藤井雅治
応用物理・物理系学会中国四国支部合同学術講演会講演予稿集   2017   
則内怜欧, 田中祐輔, JEON H.G, 藤井雅治, 井堀春生
電気関係学会四国支部連合大会講演論文集(CD-ROM)   17 Sep 2016   
井堀春生, 田中祐輔, JEON H.‐G., 藤井雅治
電気関係学会四国支部連合大会講演論文集(CD-ROM)   17 Sep 2016   
田中弘志郎, 藤井雅治, 井堀春生, JEAN H.
電気関係学会四国支部連合大会講演論文集(CD-ROM)   17 Sep 2016   
児玉有生, 大崎晃輝, 原滉貴, 藤井雅治, 井堀春生, JEON H.‐G.
電気関係学会四国支部連合大会講演論文集(CD-ROM)   17 Sep 2016   
藤井雅治, 加藤竜策, 谷口裕一, 井堀春生, JOEN G.‐G.
電気関係学会四国支部連合大会講演論文集(CD-ROM)   17 Sep 2016   
井堀春生, 児玉有生, JEON Hyeon‐Gu, 藤井雅治
電気学会基礎・材料・共通部門大会講演論文集(CD-ROM)   5 Sep 2016   
吉村佳祐, 近藤亮介, 八須悠介, JEON Hyen‐gu, 藤井雅治, 井堀春生, 梅本貴弘, 大竹奏智, 釣本崇夫
電気学会基礎・材料・共通部門大会講演論文集(CD-ROM)   5 Sep 2016   
梅本貴弘, 大竹泰智, 釣本崇夫, 吉村佳祐, 藤井雅治, 井堀春生
電気学会基礎・材料・共通部門大会講演論文集(CD-ROM)   5 Sep 2016   
広田大貴, 藤井雅治, JEON Hyeon‐Gu, 井堀春生
電気学会全国大会講演論文集(CD-ROM)   5 Mar 2016   
田中祐輔, 則内怜欧, JEON H.‐G., 藤井雅治, 井堀春生
電気学会全国大会講演論文集(CD-ROM)   5 Mar 2016   
梅本貴弘, 大竹泰智, 釣本崇夫, 吉村佳祐, 長尾宙樹, 藤井雅治, 井堀春生
電気学会全国大会講演論文集(CD-ROM)   5 Mar 2016   
広田大貴, JEON Hyeon‐Gu, 井堀春生, 藤井雅治
電気学会誘電・絶縁材料研究会資料   21 Jan 2016   
Release and injection of neurotransmitter using conducting polymer by cross-potential method
Masaharu Fujii, Haruo Ihori and Hyeon-Gu Jeon
International Conference on Science and Technoology of Synthetic Metals 2016   2016   
児玉有生, 藤井雅治, 井堀春生, JEON Hyeon‐Gu
電気学会放電研究会資料   4 Dec 2015   
田中祐輔, 永岡祐二, JEON H.‐G, 藤井雅治, 井堀春生
電気学会放電研究会資料   4 Dec 2015   
藤井雅治, 児玉有生, 井堀春生, JEON H.‐G.
電気関係学会四国支部連合大会講演論文集(CD-ROM)   26 Sep 2015   
田中祐輔, 永岡祐二, JEON H.‐G., 藤井雅治, 井堀春生
電気関係学会四国支部連合大会講演論文集(CD-ROM)   26 Sep 2015   
児玉有生, 藤井雅治, 井堀春生, JEON H.‐G.
電気関係学会四国支部連合大会講演論文集(CD-ROM)   26 Sep 2015   
田中弘志郎, 藤井雅治, 井堀春生, JEON H.
電気関係学会四国支部連合大会講演論文集(CD-ROM)   26 Sep 2015   
広田大貴, 藤井雅治, 井堀春生, JEON H.‐G.
電気関係学会四国支部連合大会講演論文集(CD-ROM)   26 Sep 2015   
Control of Neurotransmitter using Conducting Polymer
FUJII Masaharu
6th International Conference on Electrical and Electronic Material Engineering   May 2015   
広田大貴, 藤井雅治, 井堀春生, JEON Hyeon‐gu
電気学会全国大会講演論文集(CD-ROM)   5 Mar 2015   
永岡祐二, 岡充, 田中祐輔, 宮内一輝, JEON H. G., 藤井雅治, 井堀春生
電気学会全国大会講演論文集(CD-ROM)   5 Mar 2015   
上田涼介, 児玉有生, 中川真宏, JEON H.‐G., 藤井雅治, 井堀春生
電気学会全国大会講演論文集(CD-ROM)   5 Mar 2015   
上田涼介, 中川真宏, 児玉有生, JEON H.‐G., 井堀春生, 藤井雅治
電気関係学会四国支部連合大会講演論文集(CD-ROM)   12 Sep 2014   
藤井雅治, 佐々木慶太, 井堀春生, JEON H.‐G.
電気関係学会四国支部連合大会講演論文集(CD-ROM)   12 Sep 2014   
永岡祐二, 岡充, 宮内一輝, 田中祐輔, 藤井雅治, 井堀春生
電気関係学会四国支部連合大会講演論文集(CD-ROM)   12 Sep 2014   
黒河孝宣, 藤井雅治, 井堀春生
電気関係学会四国支部連合大会講演論文集(CD-ROM)   12 Sep 2014   
広田大貴, 藤井雅治, 井堀春生, JEON H.‐G.
電気関係学会四国支部連合大会講演論文集(CD-ROM)   12 Sep 2014   
上野正聖, 藤井雅治, 井堀春生, JEON H.‐G.
電気関係学会四国支部連合大会講演論文集(CD-ROM)   12 Sep 2014   
大田航平, 藤井雅治, 井堀春夫, JEON H.‐G.
電気関係学会四国支部連合大会講演論文集(CD-ROM)   12 Sep 2014   
藤井雅治, 井堀春生, JEON Hyeon‐Gu
電気学会全国大会講演論文集(CD-ROM)   5 Mar 2014   
黒河孝宣, 広田大貴, JEON Hyeon‐gu, 藤井雅治, 井堀春生
電気学会全国大会講演論文集(CD-ROM)   5 Mar 2014   
上田涼介, 原駿伍, 西竜二, JEON H.‐G., 井堀春生, 藤井雅治
電気学会全国大会講演論文集(CD-ROM)   5 Mar 2014   
岡充, 中尾勇人, 永岡裕二, 高杉奨, 藤井雅治, 井堀春生
電気学会全国大会講演論文集(CD-ROM)   5 Mar 2014   
黒河孝宣, 広田大貴, 藤井雅治, 井堀春生
電気関係学会四国支部連合大会講演論文集(CD-ROM)   20 Sep 2013   
中尾勇人, 岡充, 高杉奨, 藤井雅治, 井堀春生
電気関係学会四国支部連合大会講演論文集(CD-ROM)   20 Sep 2013   
佐々木慶太, 井堀春生, 藤井雅治
電気関係学会四国支部連合大会講演論文集(CD-ROM)   20 Sep 2013   
藤井雅治, 町家侑佳, 井堀春生, JEON H.
電気関係学会四国支部連合大会講演論文集(CD-ROM)   20 Sep 2013   
岡充, 中尾勇人, 藤井雅治, 井堀春生
電気関係学会四国支部連合大会講演論文集(CD-ROM)   20 Sep 2013   
原駿伍, 西竜二, JEON H.‐G., 井堀春生, 藤井雅治
電気関係学会四国支部連合大会講演論文集(CD-ROM)   20 Sep 2013   
大田航平, 大木一輝, 藤井雅治
電気関係学会四国支部連合大会講演論文集(CD-ROM)   20 Sep 2013   
JEON Hyeon‐Gu, 孕石修也, 宮澤惇, 市川結, 小熊尚実, 朝日剛, 井堀春生, 藤井雅治
光化学討論会講演要旨集   7 Sep 2013   
FUJII Masaharu, IHORI Haruo, JEON Hyeon-Gu
電気学会研究会資料. DEI, 誘電・絶縁材料研究会   31 May 2013   
井堀春生, 岡充, 竹村昌記, 中尾勇人, 藤井雅治
電気学会全国大会講演論文集   5 Mar 2013   
藤井雅治, 町屋侑佳, 板本成弘, 井堀春生, JEON Hyeon‐Gu
電気学会全国大会講演論文集   5 Mar 2013   
藤井雅治, 井堀春生, 大江秀紀
愛媛大学社会連携推進機構研究成果報告書   Mar 2013   
中尾勇人, 藤井雅治, 井堀春生
電気関係学会四国支部連合大会講演論文集(CD-ROM)   29 Sep 2012   
越智貴大, 滝佑介, 藤井雅治, 井堀春生, JEON Hyeon‐Gu
電気関係学会四国支部連合大会講演論文集(CD-ROM)   29 Sep 2012   
佐々木慶太, 藤井雅治, 井堀春生, JEON H.
電気関係学会四国支部連合大会講演論文集(CD-ROM)   29 Sep 2012   
町屋侑佳, 板本成弘, 藤井雅治, 井堀春生, JEON H.‐G.
電気関係学会四国支部連合大会講演論文集(CD-ROM)   29 Sep 2012   
藤井雅治, 赤松翔太, 井堀春生, JEON H.
電気関係学会四国支部連合大会講演論文集(CD-ROM)   29 Sep 2012   
藤井雅治, 赤松翔太, 井堀春生
電気学会全国大会講演論文集   5 Mar 2012   
町屋侑佳, 酒井利幸, 藤井雅治, 井堀春生
電気学会全国大会講演論文集   5 Mar 2012   
伊東紗希, 中尾勇人, 竹村昌記, 藤井雅治, 井堀春生
電気学会全国大会講演論文集   5 Mar 2012   
渡辺拓也, 佐川誠, 山本遼, 藤井雅治, 井堀春生
電気関係学会四国支部連合大会講演論文集(CD-ROM)   13 Sep 2011   
伊東紗希, 中尾勇人, 竹村昌記, 藤井雅治, 井堀春生
電気関係学会四国支部連合大会講演論文集(CD-ROM)   13 Sep 2011   
伊藤圭佑, 藤井雅治, 井堀春夫
電気関係学会四国支部連合大会講演論文集(CD-ROM)   13 Sep 2011   
町屋侑佳, 藤井雅治, 井堀春生
電気関係学会四国支部連合大会講演論文集(CD-ROM)   13 Sep 2011   
藤井雅治, 赤松翔太, 井堀春夫
電気関係学会四国支部連合大会講演論文集(CD-ROM)   13 Sep 2011   
AKAMATU Shota, FUJII Masaharu, IHORI Haruo
電気学会研究会資料. PPT, パルスパワー研究会   4 Aug 2011   
AKAMATU Shota, FUJII Masaharu, IHORI Haruo
電気学会研究会資料. ED, 放電研究会   4 Aug 2011   
藤井雅治, 黒瀬愛, 井堀春生
電気学会全国大会講演論文集   5 Mar 2011   

Research Grants & Projects

 
Study on Conducting Polymer
Fractal Analysis of electrical tree in polymer