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Mechanism elucidation of acoustic cavitation bubble from measurements of polarity and sonoluminescence

Research Project

Project/Area Number 19K15452
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 29030:Applied condensed matter physics-related
Research InstitutionJapan Women's University

Principal Investigator

LEE Hyang-Bok  日本女子大学, 理学部, 助教 (50836632)

Project Period (FY) 2019-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2020: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2019: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Keywords音響キャビテーション / ソノルミネセンス / 帯電 / 音響キャビテーション気泡
Outline of Research at the Start

音響キャビテーション現象は、様々な分野で応用が期待されており、効果的な応用のためには機構解明は必須であるが未だ不明な点が多い。特に、音響キャビテーション気泡の電気的性質については報告例がない。本研究は、空間・時間的に安定な単一気泡に電界を印可し、そのときの気泡の位置移動、気泡振動とソノルミネセンス強度変化測定より音響キャビテーション気泡の電気的性質とその要因を明らかにし、音響キャビテーション気泡の運動とソノルミネセンスの機構の理解を深め、その応用場を広げることにする。

Outline of Final Research Achievements

We investigated, for the first time, the charge of a single-bubble sonoluminescence (SBSL bubble) that exhibits spatiotemporally stable light emission by applying an electric field to the SBSL bubble. The translation results of the SBSL bubble under an electric field suggests that it is positively charged. Also we measured the electric field effects on bubble expansion and contraction by a light scattering technique. The measurement results suggest that bubble oscillation can be controlled by applying an electric field. Furthermore, the amount of bubble translation under an electric field depended on the elapsed time of sonoluminescence, suggesting that the products generated inside the SBSL bubble affect the mechanism of bubble charging.

Academic Significance and Societal Importance of the Research Achievements

本研究はこれまで報告例がなかった音響キャビテーション気泡の電気的性質を実験的に明らかにした。また、電界印加によって気泡振動を制御できることがわかった。本研究によって音響キャビテーション気泡の新たな応用場への活用が期待できる。

Report

(6 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (8 results)

All 2024 2021 2020 2019

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (7 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] Electrification of Sonoluminescing Single Bubble2020

    • Author(s)
      Lee Hyang-Bok、Choi Pak-Kon
    • Journal Title

      The Journal of Physical Chemistry B

      Volume: 124 Issue: 15 Pages: 3145-3151

    • DOI

      10.1021/acs.jpcb.0c00956

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Charge of sonoluminescing single bubble in water2024

    • Author(s)
      Hyang-Bok Lee
    • Organizer
      Nanobubble 2024
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Estimation of charges of a sonoluminescing bubble under electric field2021

    • Author(s)
      Hyang-Bok Lee, Pak-Kon Choi
    • Organizer
      第42回超音波エレクトロニクスの基礎と応用に関するシンポジウム
    • Related Report
      2021 Research-status Report
  • [Presentation] 音響発光する単一気泡にはたらくBjerknes力と帯電2021

    • Author(s)
      影山祐弥, 李香福,崔博坤
    • Organizer
      第68回応用物理学会春季学術講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] ソノルミネセンス気泡の帯電2019

    • Author(s)
      李香福, 崔博坤
    • Organizer
      第66回応用物理学会春季学術講演会
    • Related Report
      2019 Research-status Report
  • [Presentation] Charges of sonoluminescing bubble at the liquid-bubble interface2019

    • Author(s)
      Hyang-Bok Lee, Pak-Kon Choi
    • Organizer
      4th Asia Oceania Sonochemical Society Conference
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] ソノルミネセンス気泡の帯電と気泡ダイナミクスに及ぼす電場の影響2019

    • Author(s)
      李香福, 崔博坤
    • Organizer
      第28回ソノケミストリー討論会
    • Related Report
      2019 Research-status Report
  • [Presentation] Effects of electric fields on sonoluminescence intensity and bubble dynamics2019

    • Author(s)
      Hyang-Bok Lee, Pak-Kon Choi
    • Organizer
      第40回超音波エレクトロニクスの基礎と応用に関するシンポジウム
    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2025-01-30  

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