Stabilization mechanism of atmospheric non thermal equilibrium plasma for complicated three-dimensional shape

• Project/Area Number: 15K04715
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Plasma electronics
• Research Institution: Saga University
• Principal Investigator: Misawa Tatsuya 佐賀大学, 理工学部, 助教 (70346873)
• Project Period (FY): 2015-04-01 – 2019-03-31
• Project Status: Completed (Fiscal Year 2018)
• Budget Amount: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2015: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
• Keywords: 大気圧熱非平衡プラズマ / 立体形状プラズマ / 水-誘電体多層電極 / プラズマ応用 / 放電メカニズム / 水－誘電体多層電極 / 水ー誘電体多層電極

Outline of Final Research Achievements

The stabilization mechanism of atmospheric non thermal equilibrium three - dimensional plasma using “water dielectric multi layer electrode” were studied. Clarification of discharge mechanism were carried out by observation of discharge phenomena with control of temperature and electric property of water involved in the discharge electrode. In addition, application of this electric discharge to industrial technology was also studied. It was clearly observed that uniform discharge under non uniform electric field had been realized by the high-speed transfer of local discharge which was occurred by temperature rise of the water. The application of uniform plasma treatment to three-dimensional shaped agricultural products and industrial products is expected in the near future.

Academic Significance and Societal Importance of the Research Achievements

複雑な形状物を持つ農産物や工業製品へのプラズマ処理ができる立体形状を持つ大気圧非平衡プラズマの生成が可能であることは，既存の大気圧非平衡プラズマの研究と比較しても，非常に独創的である．その発生メカニズムの解明は理学，工学の両面から極めて有意義である．この放電のメカニズムを解明することで，形状やサイズの為にプラズマ利用が出来なかった，農業・工業などの新しい分野でのプラズマ応用の展開が期待できる．

Research Products

• [Presentation] Property of three dimensional atmospheric plasma used by water-dielectric multi-layer electrode (2018)
  • Author(s): Tatsuya Misawa
  • Organizer: 16th International Conference on Plasma Surface Engineering (PSE2018)
  • Int'l Joint Research
• [Presentation] 立体形状を持つ大気圧プラズマを用いた低温プラズマ殺菌の殺菌特性 (2017)
  • Author(s): 三沢達也、西岡輝美、内田裕大、坂田豪大
  • Organizer: 日本防菌防黴学会 第４４回年会
• [Presentation] 水ー誘電体多層電極を用いた立体大気圧プラズマの放電構造 (2017)
  • Author(s): 三沢達也
  • Organizer: Plasma Conference 2017
• [Presentation] 水-誘電体多層電極を用いた立体形状の大気圧熱非平衡プラズマの応用 (2016)
  • Author(s): 三沢 達也
  • Organizer: プラズマ・核融合学会 第33回年会
  • Place of Presentation: 東北大学青葉山キャンパス
  • Year and Date: 2016-11-30
• [Presentation] 水-誘電体多層電極を用いた立体形状の大気圧熱非平衡プラズマの応用 (2015)
  • Author(s): 三沢達也
  • Organizer: 第31回九州・山口プラズマ研究会
  • Place of Presentation: COCOLAND SPORTS&RESORT（山口県）
  • Year and Date: 2015-11-01
• [Presentation] 立体形状に適応する大気圧非平衡プラズマの生成メカニズムと特性 (2015)
  • Author(s): 三沢達也
  • Organizer: 平成27年度電気学会基礎・材料・共通部門大会
  • Place of Presentation: 金沢大学角間キャンパス
  • Year and Date: 2015-09-18
• [Presentation] 立体形状大気圧プラズマの殺菌特性の位置依存性 (2015)
  • Author(s): 三沢達也，三島朋子，高井雄一郎，西岡輝美
  • Organizer: 2015年第76回応用物理学会秋季学術講演会・シンポジウム「プラズマ医療科学の最前線（Frontier of Plasma Medicine）」
  • Place of Presentation: 名古屋国際会議場
  • Year and Date: 2015-09-14