論文 - 迫田 達也
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電気絶縁機器用ポリマー外被材の直流・交流時の電気的特性の評価 査読あり
三宅琢磨, 瀬尾裕也, 押川典仁, 迫田達也, 大坪昌久, 安食富和
電気設備学会誌 32 ( 8 ) 594 - 599 2012年12月
記述言語：日本語 掲載種別：研究論文（学術雑誌）
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微細藻類がポリマーがいし外被材の絶縁特性に与える影響の評価 査読あり
本田一史, 押川 典仁, 三宅 琢磨, 迫田 達也, 吉田 ナオト, 古河 征二
電気学会論文誌A 132 ( 11 ) 944 - 950 2012年12月
記述言語：日本語 掲載種別：研究論文（学術雑誌）
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Insulation characteristics of polymer insulator materials with algaes
Honda K., Oshikawa N., Miyake T., Sakoda T., Yoshida N., Furukawa S.
IEEJ Transactions on Fundamentals and Materials 132 ( 11 ) 944 - 950 2012年11月
記述言語：日本語 掲載種別：研究論文（学術雑誌） 出版者・発行元：IEEJ Transactions on Fundamentals and Materials
Polymer insulator has some excellent properties such as being lightweight, hydrophobicity, and antiweatherability. However, the polymer material is made from organic matters whereby the aged deterioration due to electric discharges, polluted deposited, and microbes is worrying. In this study, we first investigated existence and kind of microbes on the surface of silicone rubber (SiR) insulators arranged outdoor for 11 years. Next, to investigate how the microbes influence insulation performance of polymeric materials, the salt fog tests were performed on SiR samples with the artificial cultured microbes. The microbes temporally increased the leakage current due to discharges; however, the degradation didn't continue because the discharges rejected the microbes. © 2012 The Institute of Electrical Engineers of Japan.
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Frequency dependence on etching characteristics of silicon using surface discharge plasma
Arimura T., Hirano K., Hamada T., Sakoda T.
IEEJ Transactions on Fundamentals and Materials 132 ( 4 ) 333 - 334 2012年10月
記述言語：日本語 掲載種別：研究論文（学術雑誌） 出版者・発行元：IEEJ Transactions on Fundamentals and Materials
We proposed a maskless plasma etching technique for fabrication of front contact grooves on a single crystalline silicon solar cell. In this paper, we evaluated characteristics of silicon etching with various output frequency of ac power source. The etching rate in the direction of the groove width was suppressed while that in the direction of the groove depth increased with increasing output frequency of the power source. Thus, it was found that the increase of output frequency of a power source was effective in the case where the surface discharge plasma was applied to patterning. © 2012 The Institute of Electrical Engineers of Japan.
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Maximum Output Power Control using Short-Circuit Current and Open-Circuit Voltage of a Solar Panel 査読あり
Takahiro Kato, Takuma Miyake, Daisuke Tashima, Tatsuya Sakoda, Masahisa Otsubo, Mitsuyuki Hombu
Japanese Journal of Applied Physics 10 ( 51 ) 10NF08-1 - 10NF08-4 2012年10月
記述言語：英語 掲載種別：研究論文（学術雑誌）
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Maximum output power control using short-circuit current and open-circuit voltage of a solar panel
Kato T., Miyake T., Tashima D., Sakoda T., Otsubo M., Hombu M.
Japanese Journal of Applied Physics 51 ( 10 PART 2 ) 1 - 10 2012年10月
記述言語：日本語 掲載種別：研究論文（学術雑誌） 出版者・発行元：Japanese Journal of Applied Physics
A control method to optimize the output power of a solar cell is necessary because the output of a solar cell strongly depends on solar radiation. We here proposed two output power control methods using the short-circuit current and open-circuit voltage of a solar panel. One of them used a current ratio and a voltage ratio (αβ control), and the other used a current ratio and a short-circuit current-electric power characteristic coefficient (αγ control). The usefulness of the αβ and the αγ control methods was evaluated. The results showed that the output power controlled by our proposed methods was close to the maximum output power of a solar panel. © 2012 The Japan Society of Applied Physics.
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Tashima D., Yoshitama H., Sakoda T., Okazaki A., Kawaji T.
Electrochimica Acta 77 198 - 203 2012年8月
記述言語：日本語 掲載種別：研究論文（学術雑誌） 出版者・発行元：Electrochimica Acta
The electrochemical properties of electric double-layer capacitors (EDLCs) made with plasma-treated powdered activated carbon (treated using a dielectric barrier discharge) were examined using cyclic voltammetry (CV), Cole-Cole plots, and X-ray photoelectron spectroscopy (XPS). The dielectric barrier discharge method, which operates at atmospheric pressure, dramatically reduces the processing time and does not require vacuum equipment, making it a more practical alternative than low-pressure plasma treatment. The experimental data indicate that the specific capacitance of the EDLCs could be improved by oxygen plasma treatment. Capacitance of EDLCs made with activated carbon treated for 15 s showed 193.5 F/g that 20% increase in the specific capacitance relative to untreated EDLCs. This result indicates that the plasma treatment yields EDLCs that are suitable for high-energy applications. The enhancement of capacitance was mainly attributed to an increase in the BET surface area of the activated carbon and the creation of carboxyl groups on the surface of t he carbon. The carboxyl groups induced oxidation-reduction reactions in the presence of O 2 which was included in the operation gas. In addition, the carboxyl groups improved the penetration of the electrolyte solution into the carbon electrodes. © 2012 Elsevier Ltd All rights reserved.
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三宅 琢磨, 瀬尾 裕也, 押川 典仁, 迫田 達也, 大坪 昌久, 安食 富和
電気設備学会誌 32 ( 8 ) 594 - 599 2012年8月
記述言語：日本語 掲載種別：研究論文（学術雑誌）
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Characteristics of powdered activated carbon treated with dielectric barrier discharge for electric double-layer capacitors 査読あり
Daisuke Tashima, Hiromu Yoshitama, Tatsuya Sakoda, Akihito Okazaki, Takayuki Kawaji
Electrochimica Acta 77 198 - 203 2012年5月
記述言語：英語 掲載種別：研究論文（学術雑誌）
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沿面放電プラズマを用いたSiエッチングの電源周波数依存性 査読あり
有村拓也, 平野啓太, 濱田俊之, 迫田達也
電気学会論文誌A 132 ( 4 ) 333 - 334 2012年4月
記述言語：日本語 掲載種別：研究論文（学術雑誌）
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Hamada T., Arimura T., Sakoda T.
Plasma Chemistry and Plasma Processing 32 ( 2 ) 325 - 332 2012年4月
記述言語：日本語 掲載種別：研究論文（学術雑誌） 出版者・発行元：Plasma Chemistry and Plasma Processing
An optimal gas supply method for the micro discharge plasma generated along a quartz glass electrode, which was useful for the maskless fabrication of electrode grooves for surface electrodes on solar cells, was examined. We here constructed an electrode system with gas inlet and outlet holes. The gas supply directly to the plasma region contributed to reduce byproducts on the surface being etched, and then it was confirmed that the uniform etching was achieved in the case where the micro-discharge plasma locally produced at the etching area. © Springer Science+Business Media, LLC 2011.
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Studies on optimal gas supply for a maskless etching system with micro- discharge plasma operated at atmospheric pressure 査読あり
Toshiyuki Hamada, Takuya Arimura, Tatsuya Sakoda
Plasma Chemistry and Plasma Processing 32 ( 2 ) 325 - 332 2012年3月
記述言語：英語 掲載種別：研究論文（学術雑誌）
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本田 一史, 押川 典仁, 三宅 琢磨, 迫田 達也, 大坪 昌久, 古河 征二, 田中 賢示
電気学会研究会資料. DEI, 誘電・絶縁材料研究会 2012 ( 13 ) 37 - 42 2012年1月
記述言語：日本語 掲載種別：研究論文（学術雑誌）
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本田 一史, 押川 典仁, 三宅 琢磨, 迫田 達也, 大坪 昌久, 古河 征二, 田中 賢示
電気学会研究会資料. ED, 放電研究会 2012 ( 1 ) 37 - 42 2012年1月
記述言語：日本語 掲載種別：研究論文（学術雑誌）
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Characteristics of hydrophobicity loss on silicone rubber surface during a dynamic drop test with direct current voltage application 査読あり
Yuya Seo, Norihito Oshikawa, Takuma Miyake, Tatsuya Sakoda, and Tomikazu Anjiki
Nanoscale Research Letters 7 ( 4 ) 1 - 4 2012年1月
記述言語：英語 掲載種別：研究論文（学術雑誌）
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三宅 琢磨, 瀬尾 裕也, 押川 典仁, 迫田 達也, 大坪 昌久, 安食 富和
電気設備学会誌 32 ( 8 ) 593 - 599 2012年
記述言語：日本語 掲載種別：研究論文（学術雑誌） 出版者・発行元：The Institute of Electrical Installation Engineers of Japan
Recently，much attention has been paid to polymeric materials used for housing of electric power apparatus. However，because polymeric material is made by organic matters，the aged deterioration is anxious. The lifetime of polymeric material is influenced by environmental conditions such as ultraviolet，acid rain，and polluted deposits. The change of the surface condition of polymeric material causes dry band arc discharges. To understand the long-term reliability of the insulation performance of polymeric materials，a composite pollution test of a liquid silicone rubber (LSR) was performed with dc or ac voltage application. After the test，heavy erosion was confirmed around a cathode electrode when dc voltage was applied. In the case of ac voltage application，heavy erosion was confirmed around a grounding electrode. It was also found that the initiation time of leakage current and cumulative charge depended on the kind of polluted deposits and that the difference of cumulative charge among polluted deposits in the case of dc voltage application was larger than that in the case of ac voltage application.
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Electrochemical capacitances of carbon powder treated with dielectric barrier discharge
Tashima D., Hirakawa R., Sakoda T., Otsubo M.
Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2011 Vol.1 109 - 112 2011年12月
記述言語：日本語 掲載種別：研究論文（学術雑誌） 出版者・発行元：Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP
Powdery activated carbons were treated using dielectric barrier discharge. In comparison with low pressure plasma, dielectric barrier discharge operated at atmospheric pressure can dramatically reduce the processing time and does not need vacuum equipment. In this study, electrochemical properties of Electric Double Layer Capacitors (EDLCs) made of oxygen plasma-treated powdery activated carbons were examined through Cyclic Voltammetry (CV), cole-cole plots and X-ray Photoelectron Spectroscopy (XPS). It was found that the specific capacitance of EDLCs could be improved by using oxygen plasma-treated activated carbon powder. A comparison of EDLCs using carbon powder treated for 15 S versus untreated EDLCs shows a 20% increase in specific capacitance, which indicates that the plasma treatment for EDLC's carbon powder are suitable for high-energy applications. The enhancement of capacitance was mainly attributed to an increase in the BET surface area of the carbon powder and the creation of phenolic hydroxyl groups on the surface of the carbon. The phenolic hydroxyl groups caused oxidation-reduction reactions, because oxygen was included in the operation gas. In addition, the phenolic hydroxyl groups improved the penetration of the electrolyte solution. © 2011 IEEE.
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中村 祐太, 平野 啓太, 北島 純一, 迫田 達也, 栗原 聡史, 金子 幸市朗, 鎗光 隆義
電気学会研究会資料. HV, 高電圧研究会 2011 ( 67 ) 81 - 84 2011年11月
記述言語：日本語 掲載種別：研究論文（学術雑誌）
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押川 典仁, 瀬尾 裕也, 三宅 琢磨, 迫田 達也, 安食 富和
電気学会研究会資料. HV, 高電圧研究会 2011 ( 67 ) 77 - 80 2011年11月
記述言語：日本語 掲載種別：研究論文（学術雑誌）
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Electrochemical Capacitances of Carbon Powder Treated with Dielectric Barrier Discharge 査読あり
D. Tashima, R. Hirakawa, T. Sakoda and M. Otsubo
IEEE Conference on Electrical Insulation And Dielectric Phenomena 2011年10月
記述言語：英語 掲載種別：研究論文（国際会議プロシーディングス）