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反応性クライオプラズマの創製とその材料加工プロセスへの応用

Research Project

Project/Area Number 13J06697
Research Category

Grant-in-Aid for JSPS Fellows

Allocation TypeSingle-year Grants
Section国内
Research Field Material processing/treatments
Research InstitutionThe University of Tokyo

Principal Investigator

宗岡 均  東京大学, 新領域創成科学研究科, 特別研究員(PD)

Project Period (FY) 2013-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥3,000,000 (Direct Cost: ¥3,000,000)
Fiscal Year 2015: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 2014: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 2013: ¥1,000,000 (Direct Cost: ¥1,000,000)
Keywordsクライオプラズマ / プラズマ化学 / 超臨界流体 / 密度揺らぎ / 絶縁破壊 / 電界電子放出 / 低誘電率材料
Outline of Annual Research Achievements

本年度は、本研究課題の最終年度として、これまでに行ってきた、(A)ヘリウム(He)の気液臨界点近傍における絶縁破壊現象についての研究、(B)He/窒素混合系クライオプラズマ中の種々の反応のプラズマガス温度依存性についての実験および計算による研究、(C)レーザー干渉計によるプラズマガス温度測定について、さらなる実験・考察をおこなった。さらに、これまでの基礎的な研究結果を材料加工プロセスの応用につなげるための研究として、(D)クライオ温度における高圧N2およびAr中における新たな放電電極の開発と材料の表面処理についての研究を新たに行った。
まず、(A)については、本年度は得られた結果の論文誌(J Phys E)およびプラズマ表面処理に関する国際学会において発表を行った。(B)の研究では、「プラズマガス温度」というパラメータのプラズマ化学における重要性を明確に示し、クライオプラズマのみならず一般的な非平衡プラズマにおいてもインパクトがあるものと考えている。また、(C)については、クライオプラズマにおいて重要な課題であるガス温度制御のために、ガス温度評価が必要であり、レーザーヘテロダイン干渉計による屈折率測定を通じてガス温度を見積もる手法を活用した。レーザー干渉計を組み上げ、新たに測定を行った。
続いて、(D)において新たな高密度流体中プラズマ源の開発を行った。本研究では、Heよりも安価で工業的な応用が見込めるN2およびArにおいて、それぞれ臨界温度付近の温度において、気体、超臨界流体、液体にまたがる領域におけるプラズマ源の開発を行った。本研究では、電界電子放出能の高いカーボンナノチューブを利用した誘電体バリア放電により、低電圧で安定かつ大面積のプラズマ源の生成を行うことができた。発光分光測定の結果より、プラズマ中での準安定窒素分子の多量の存在と、準安定分子と誘電体表面の活発な化学反応が示唆され、現在投稿論文執筆中である。

Research Progress Status

27年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

27年度が最終年度であるため、記入しない。

Report

(3 results)
  • 2015 Annual Research Report
  • 2014 Annual Research Report
  • 2013 Annual Research Report
  • Research Products

    (27 results)

All 2015 2014 2013 Other

All Journal Article (12 results) (of which Peer Reviewed: 12 results,  Acknowledgement Compliant: 1 results) Presentation (14 results) (of which Int'l Joint Research: 1 results) Remarks (1 results)

  • [Journal Article] Micrometer-scale electrical breakdown in high-density fluids with large density fluctuations: Numerical model and experimental assessment2015

    • Author(s)
      H. Muneoka, K. Urabe, S. Stauss, and K. Terashima
    • Journal Title

      Physical Review E

      Volume: 91 Issue: 4

    • DOI

      10.1103/physreve.91.042316

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Review of electric discharge microplasmas generated in highly fluctuating fluids: Characteristics and application to nanomaterials synthesis2015

    • Author(s)
      S. Stauss, H. Muneoka, K. Urabe, and K. Terashima
    • Journal Title

      Physics of Plasmas

      Volume: 22 Issue: 5

    • DOI

      10.1063/1.4921145

    • Related Report
      2015 Annual Research Report 2014 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Laser absorption spectroscopy diagnostics of helium metastable atoms generated in dielectric barrier discharge cryoplasmas2015

    • Author(s)
      K. Urabe, H. Muneoka, S. Stauss, O. Sakai, and K. Terashima
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 54 Issue: 10 Pages: 106101-106101

    • DOI

      10.7567/jjap.54.106101

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Experimental and Numerical Investigations of Time-Evolution of Discharge Current and Optical Emission in Helium-Nitrogen Cryoplasmas2014

    • Author(s)
      H. Muneoka, K. Urabe, S. Stauss, and K. Terashima
    • Journal Title

      Plasma Sources Science and Technology

      Volume: 23 Issue: 6 Pages: 065038-065038

    • DOI

      10.1088/0963-0252/23/6/065038

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 小特集「プラズマとナノ界面の相互作用」 3.超臨界流体プラズマの絶縁破壊・ナノ物質合成と密度揺らぎ2014

    • Author(s)
      宗岡 均、寺嶋 和夫
    • Journal Title

      プラズマ核融合学会誌

      Volume: 90 Pages: 384-391

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Anomalous behavior of the cavitation bubble observed in pulsed laser ablation of Ni in liquid CO2 near the critical point2014

    • Author(s)
      S. Himeno, T. Kato, K. Urabe, S. Stauss, S. Kato, H. Muneoka, M. Baba, T. Suemoto, and K. Terashima
    • Journal Title

      IEEE Transactions on Plasma Science

      Volume: 42 Issue: 10 Pages: 2630-2631

    • DOI

      10.1109/tps.2014.2327233

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Microscopic heterodyne interferometry for determination of electron density in high-pressure microplasma2014

    • Author(s)
      K. Urabe, H. Muneoka, S. Stauss, and K. Terashima
    • Journal Title

      Plasma Sources Science and Technology

      Volume: 23 Issue: 6 Pages: 064007-064007

    • DOI

      10.1088/0963-0252/23/6/064007

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effect of light irradiation on Townsend breakdown in gaseous and supercritical helium at 5.2 K2014

    • Author(s)
      D. A. Lacoste, H. Muneoka, T. F. Guiberti, D. Z. Pai, K. Urabe, S. Stauss, and K. Terashima
    • Journal Title

      Plasma Sources Science and Technology

      Volume: 22 Issue: 1 Pages: 012002-012002

    • DOI

      10.1088/0963-0252/23/1/012002

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Breakdown Characteristics of Electrical Discharges in High-Density Helium near the Critical Point2013

    • Author(s)
      H. Muneoka, K. Urabe, S. Stauss, and K. Terashima
    • Journal Title

      Applied Physics Express

      Volume: 6 Issue: 8 Pages: 086201-086201

    • DOI

      10.7567/apex.6.086201

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Development of Near-Infrared Laser Heterodyne Interferometry for the Diagnostics of Electron and Gas Number Densities in Microplasmas2013

    • Author(s)
      K. Urabe, H. Muneoka, S. Stauss, K. Terashima
    • Journal Title

      Applied Physics Express

      Volume: 6 Issue: 12 Pages: 126101-126101

    • DOI

      10.7567/apex.6.126101

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Ashing of photoresists using dielectric barrier discharge cryoplasmas2013

    • Author(s)
      S. Stauss, S. Mori, H. Muneoka, K. Terashima, and F. Iaco, i
    • Journal Title

      Journal of Vacuum Science & Technology B

      Volume: 31 Issue: 6 Pages: 061202-061202

    • DOI

      10.1116/1.4825202

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Dynamics of pulsed laser ablation in high-density carbon dioxide including supercritical fluid state2013

    • Author(s)
      K. Urabe, T. Kato, S. Stauss, S. Himeno, S. Kato, M. BabaT. Suemoto, K. Terashima
    • Journal Title

      Journal of Applied Physics

      Volume: 114 Issue: 14

    • DOI

      10.1063/1.4824538

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Presentation] Shadowgraph Imaging and Numerical Simulation of Cavitation Bubbles Formed in PulsedLaser Ablation Plasmas in the Vicinity of the Critical Point of CO22015

    • Author(s)
      Hitoshi Muneoka
    • Organizer
      68th Annual Gaseous Electronics Conference/9th International Conference on Reactive Plasmas/33rd Symposium on Plasma Processing
    • Place of Presentation
      Honolulu, HI, USA
    • Year and Date
      2015-10-12
    • Related Report
      2015 Annual Research Report
  • [Presentation] Electric Breakdown Model for High-pressure and Fluctuating Fluids near the Critical Point2015

    • Author(s)
      Hitoshi Muneoka
    • Organizer
      10th Asian-European International Conference on Plasma Surface Engineering
    • Place of Presentation
      Jeju, Korea
    • Year and Date
      2015-09-21
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 超臨界CO2中パルスレーザーアブレーションにより生成されたキャビテーションバブルの時間発展解析2015

    • Author(s)
      宗岡均
    • Organizer
      第76回応用物理学会秋季学術講演会
    • Place of Presentation
      名古屋国際会議場
    • Year and Date
      2015-09-13
    • Related Report
      2015 Annual Research Report
  • [Presentation] 高圧気体・超臨界流体中における密度揺らぎのスケール依存性を考慮した放電モデルの構築2015

    • Author(s)
      宗岡 均、占部 継一郎、シュタウス スヴェン、寺嶋 和夫
    • Organizer
      第 62 回応用物理学会春季学術講演会
    • Place of Presentation
      東海大学(神奈川県平塚市)
    • Year and Date
      2015-03-11 – 2015-03-14
    • Related Report
      2014 Annual Research Report
  • [Presentation] Dependency of Reaction Dynamics on Plasma Gas Temperature in He/N2 Cryoplasmas2014

    • Author(s)
      H. Muneoka, K. Urabe, S. Stauss, and K. Terashima
    • Organizer
      Plasma Conference 2014
    • Place of Presentation
      朱鷺メッセ(新潟県新潟市)
    • Year and Date
      2014-11-17 – 2014-11-21
    • Related Report
      2014 Annual Research Report
  • [Presentation] Experimental and Numerical Investigation of the Dependency of Reaction Dynamics on the Plasma Gas Temperature in He/N2 Cryoplasmas2014

    • Author(s)
      H. Muneoka, K. Urabe, S. Stauss, and K. Terashima
    • Organizer
      67th Gaseous Electronics Conference
    • Place of Presentation
      Marriott City Center and Raleigh Convention Center (Raleigh, NC, USA)
    • Year and Date
      2014-11-03 – 2014-11-07
    • Related Report
      2014 Annual Research Report
  • [Presentation] Dependency of Reaction Dynamics on Plasma Gas Temperature in He/N2 Cryoplasmas2014

    • Author(s)
      H. Muneoka, K. Urabe, S. Stauss, and K. Terashima
    • Organizer
      12th Asia Pacific Conference on Plasma Science and Technology and 27th Symposium on Plasma Science for Materials
    • Place of Presentation
      Adelaide Convention Centre (Adelaide, Australia)
    • Year and Date
      2014-08-31 – 2014-09-05
    • Related Report
      2014 Annual Research Report
  • [Presentation] Electric breakdown model for micrometer gap discharges in fluctuating fluids near the critical point2014

    • Author(s)
      H. Muneoka, K. Urabe, S. Stauss, and K. Terashima
    • Organizer
      The International Union of Materials Research Society – International Conference in Asia 2014
    • Place of Presentation
      福岡大学(福岡県福岡市)
    • Year and Date
      2014-08-24 – 2014-08-29
    • Related Report
      2014 Annual Research Report
  • [Presentation] 液体窒素温度(77K)以下のヘリウム/窒素混合ガス中におけるクライオプラズマ反応機構2014

    • Author(s)
      宗岡 均
    • Organizer
      第61回応用物理学会春季学術講演会
    • Place of Presentation
      青山学院大学(神奈川県相模原市)
    • Year and Date
      2014-03-17
    • Related Report
      2013 Annual Research Report
  • [Presentation] Characterization of helium cryoplasmas below 60 K with continuous gas temperature control2014

    • Author(s)
      H. Muneoka
    • Organizer
      8^<th> International Conference on Reactive Plasmas and 31^<st> Symposium on Plasma Processing
    • Place of Presentation
      福岡国際会議場(福岡県福岡市)
    • Year and Date
      2014-02-06
    • Related Report
      2013 Annual Research Report
  • [Presentation] Electrical Breakdown Characteristics in Fluctuating Fluids near Gas-liquid Critical Point of Helium2013

    • Author(s)
      H. Muneoka
    • Organizer
      The 66^<th> Gaseous Electronic Conference
    • Place of Presentation
      プリンストン、アメリカ合衆国
    • Year and Date
      2013-10-01
    • Related Report
      2013 Annual Research Report
  • [Presentation] Electrical discharges in a fluctuating helium fluid near the critical point2013

    • Author(s)
      H. Muneoka
    • Organizer
      The 12^<th> Asia Pacific Physics Conference
    • Place of Presentation
      幕張メッセ国際会議場(千葉県千葉市)
    • Year and Date
      2013-07-17
    • Related Report
      2013 Annual Research Report
  • [Presentation] Microplasma breakdown voltages in helium in the vicinity of the critical point2013

    • Author(s)
      H. Muneoka
    • Organizer
      The 7^<th> international Workshop on Microplasmas
    • Place of Presentation
      北京、中国
    • Year and Date
      2013-05-22
    • Related Report
      2013 Annual Research Report
  • [Presentation] Gas-temperature-dependent self-organized pattern formation in helium dielectric barrier discharge cryo-microplasmas2013

    • Author(s)
      H. Muneoka
    • Organizer
      The 7^<th> international Workshop on Microplasmas
    • Place of Presentation
      北京、中国
    • Year and Date
      2013-05-22
    • Related Report
      2013 Annual Research Report
  • [Remarks]

    • URL

      http://www.plasma.k.u-tokyo.ac.jp/japanese/publications.html

    • Related Report
      2013 Annual Research Report

URL: 

Published: 2014-01-29   Modified: 2024-03-26  

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