Develpment of ultrahigh density charge accumulation method using the growth and the contraction of plasma-induced bubbles
Project/Area Number |
15K13864
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Research Category |
Grant-in-Aid for Challenging Exploratory Research
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Allocation Type | Multi-year Fund |
Research Field |
Fluid engineering
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Research Institution | Tohoku University |
Principal Investigator |
SATO Takehiko 東北大学, 流体科学研究所, 教授 (10302225)
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Co-Investigator(Kenkyū-buntansha) |
金澤 誠司 大分大学, 工学部, 教授 (70224574)
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Project Period (FY) |
2015-04-01 – 2017-03-31
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Project Status |
Completed (Fiscal Year 2016)
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Budget Amount *help |
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2015: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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Keywords | 気泡内放電 / 可視化 / レーザー誘起気泡 / 放電電流 / 帯電 / 数値解析 / 高密度電荷 / レーザ誘起気泡 |
Outline of Final Research Achievements |
This research aimed at forming very high density of electric charge by using a collapse process of a plasma-induced bubble. The bubble was formed by a nano-pulse laser of 532 nm and a discharge was generated using a submerged narrow electrode with application of positive or negative voltages. The collapse process of the bubble was visualized by a high speed camera of 10 Mfps in frame rate. Thus, a device which can discharge in a laser-induced bubble and can visualize the phenomenon was successfully developed. It was found that streamer channels were generated when the diameter of the bubble decrease in the cases of positive and negative voltage although the streamer was not generated without the discharge. This result implies that the elevated density of the charge probably generated a high potential which is greater than the threshold of inception electric field strength for the streamer. This is an important founding to develop a method to accumulate high density of electric charge.
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Report
(3 results)
Research Products
(15 results)
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[Journal Article] Study on Formation of Plasma Nanobubbles in Water2015
Author(s)
Takehiko Sato, Tatsuyuki Nakatani, Takashi Miyahara, Shiroh Ochiai, Masanobu Oizumi, Hidemasa Fujita and Takamichi Miyazaki
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Journal Title
Journal of Physics: Conference Series
Volume: 656
Pages: 012036-012036
DOI
Related Report
Peer Reviewed / Open Access / Acknowledgement Compliant
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[Presentation] 負極性水中放電の進展過程の可視化2016
Author(s)
熊谷諒, 金澤誠司, 大谷清伸, 小宮敦樹, 金子俊郎, 中嶋智樹, 佐藤岳彦
Organizer
日本機械学会東北支部第51期総会・講演会
Place of Presentation
東北大学工学部(宮城県仙台市)
Year and Date
2016-03-11
Related Report
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[Presentation] Initiation and propagation processes of underwater streamers2015
Author(s)
Takehiko Sato, Hidemasa Fujita, Seiji Kanazawa, Kiyonobu Ohtani, Atsuki Komiya and Toshiro Kaneko
Organizer
Joint Symposium of the 9th Asia-Pacific International Symposium on the Basics and Applications of Plasma Technology (APSPT-9) and the 28th Symposium on Plasma Science for Materials (SPSM-28)
Place of Presentation
長崎大学(長崎県長崎市)
Year and Date
2015-12-13
Related Report
Int'l Joint Research / Invited
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[Presentation] Study on Formation of Plasma Nanobubbles in Water2015
Author(s)
Takehiko Sato, Tatsuyuki Nakatani, Takashi Miyahara, Shiroh Ochiai, Masanobu Oizumi, Hidemasa Fujita and Takamichi Miyazaki
Organizer
9th International Symposium on Cavitation (CAV-2015)
Place of Presentation
スイス連邦工科大学ローザンヌ校(スイス・ローザンヌ市)
Year and Date
2015-12-07
Related Report
Int'l Joint Research
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[Presentation] Development of Bubble Generation Method by Plasma2015
Author(s)
Takehiko Sato, Yohei Nagasawa, Kiyonobu Ohtani, Takashi Miyahara and Tatsuyuki Nakatani
Organizer
15th International Symposium on Advanced Fluid Information (AFI-2015), 12th International Conference on Flow Dynamics (ICFD-2015)
Place of Presentation
仙台国際センター(宮城県仙台市)
Year and Date
2015-10-28
Related Report
Int'l Joint Research
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[Presentation] Microjet Formation Mechanism in a Cavitation Process2015
Author(s)
Tomoya Minami, Takehiko Sato, Kiyonobu Ohtani, Tomoki Nakajima, Toshiro Kaneko and Mohamed Farhat
Organizer
15th International Symposium on Advanced Fluid Information (AFI-2015), 12th International Conference on Flow Dynamics (ICFD-2015)
Place of Presentation
仙台国際センター(宮城県仙台市)
Year and Date
2015-10-28
Related Report
Int'l Joint Research
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