Electrowetting および界面振動を用いた鉛直平行電極上における微小液滴の輸送  [in Japanese] Droplet Transportation on Vertical Parallel Electrodes Using Electrowetting and Interfacial Oscillation  [in Japanese]

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Author(s)

    • 新宅 博文 SHINTAKU Hirofumi
    • 大阪大学大学院基礎工学研究科 Department of Mechanical Science and Bioengineering, Graduate School of Engineering Science, Osaka University
    • 多田羅 晋生 TATARA Yukio
    • 大阪大学大学院基礎工学研究科 Department of Mechanical Science and Bioengineering, Graduate School of Engineering Science, Osaka University
    • 川野 聡恭 KAWANO Satoyuki
    • 大阪大学大学院基礎工学研究科 Department of Mechanical Science and Bioengineering, Graduate School of Engineering Science, Osaka University

Abstract

In this study, we demonstrate the small droplet transportation on vertical parallel electrodes using electrowetting and the interfacial oscillation. The transportation of water droplets, which can be applied to the droplet-based biochemical devices, is performed by applying ac voltage that ranges from 0 to 100V_<pp>, and from 20 to 100Hz. The characteristic of the transportation is observed by the use of a high speed camera, and the effects of the interfacial oscillation and the dynamical contact angle on the droplet motion are investigated in detail. The experimental results show that the vertical velocity of the droplet can be controlled by changing the amplitude and frequency of applied ac voltage. In addition, the dynamics of the droplet is estimated theoretically considering the interfacial tension force due to the dynamical contact angle and the gravitational force. The predicted force and displacement of the droplet agree well with the experimental values obtained from the high speed observation of the droplet motion.

Journal

  • Transactions of the Japan Society of Mechanical Engineers B

    Transactions of the Japan Society of Mechanical Engineers B 74(745), 1942-1950, 2008-09-25

    The Japan Society of Mechanical Engineers

References:  20

Codes

  • NII Article ID (NAID)
    110006950958
  • NII NACSIS-CAT ID (NCID)
    AN00187441
  • Text Lang
    JPN
  • Article Type
    ART
  • ISSN
    03875016
  • NDL Article ID
    9662621
  • NDL Source Classification
    ZN11(科学技術--機械工学・工業)
  • NDL Call No.
    Z16-109
  • Data Source
    CJP  NDL  NII-ELS 
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