Microwave-induced plasma-emission mechanism in metal oxides

2013 Fiscal Year Final Research Report

• Project/Area Number: 23561030
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Energy engineering
• Research Institution: Kyoto University
• Principal Investigator: HACHIYA Kan 京都大学, エネルギー科学研究科, 助教 (90314252)
• Project Period (FY): 2011 – 2013
• Keywords: エネルギー効率化 / 材料加工・処理

Research Abstract

Microwave heating enables direct temperature elevation inside materials. Because of its various advantages over conventional methods, such as rapid and selective heating, as well as its ability to internally heat substances, microwave heating can reduce the time and lower the energy consumption necessary for material processing, although the investigations into physical process in solids at GHz band which enables such properties are limited.
On the other hand, we have observed direct reduction phenomena under microwave irradiation on TiO2 and ZnO ceramics in vacuum, accompanied with emissions of reactive atomic oxygen plasma.
In the present study, we constructed a model and analyzed luminescent phenomena during such plasma emission directly induced by microwave irradiation on ZnO ceramics.

Research Products

• [Journal Article] Delayed Luminescence from ZnO Ceramics upon Microwave-induced Plasma Emission (2013)
  • Author(s): Taro Sonobe, Kan Hachiya, Tomohiko Mitani, Naoki Shinohara and Hideaki Ohgaki
  • Journal Title: Journal of Physics and Chemistry of Solids Volume: volume 74, Issue 6 Pages: 837-840
  • DOI: 10.1016/j.jpcs.2013.01.027
  • Peer Reviewed
• [Presentation] 酸化亜鉛へのマイクロ波照射効果 (2013)
  • Author(s): 吉田恭平, 園部太郎, 全丙俊, 蜂谷寛, 奥村健祐, 三島健太, 犬飼元晴, Hani Negm, Konstantin Torgasin, Mohamed 0mer, 金城良太, 紀井俊輝, 増田開, 大垣英明
  • Organizer: VS0Rシンポジウム
  • Place of Presentation: 愛知県岡崎市自然科学研究機構岡崎コンファレンスセンター
  • Year and Date: 2013-12-07
• [Presentation] Effect of microwave irradiation on electronic structure of Zn0 (2013)
  • Author(s): Kyohei Yoshida, Taro Sonobe, Heishun Zen, Kan Hachiya, Kensuke 0kumura, Kenta Mishima, Motoharu lnukai, Hani Negm, Torgasin Konstantin, Mohamed 0mer, Ryota Kinjo, Toshiteru Kii, Kai Masuda and Hideaki 0hgaki
  • Organizer: 2013 JSAP-MRS Joint Symposia
  • Place of Presentation: 京都府京田辺市同志社大学京田辺キャンパス
  • Year and Date: 2013-09-19
• [Presentation] マイクロ波処理Zn0の電子状態の解析 (2012)
  • Author(s): 吉田恭平, 全丙俊, 蜂谷寛, 園部太郎, 紀井俊輝, 増田開, 大垣英明
  • Organizer: VS0Rシンポジウム2012
  • Place of Presentation: 愛知県岡崎市自然科学研究機構岡崎コンファレンスセンター
  • Year and Date: 20121110-11
• [Presentation] マイクロ波電界による機能性酸化物のマテりアルズ・テーラりング (2012)
  • Author(s): 蜂谷寛
  • Organizer: 「マイクロ波電界による機能性酸化物のマテリアルズ・テーラリング」第2回電磁波エネルギー応用セミナー
  • Place of Presentation: 京都府宇治市京都大学宇治キャンパスおうばくプラザ
  • Year and Date: 2012-03-06