Surface tension gradient around an alcohol droplet moving spontaneously on water surface

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  • OSHIMA Shogo
    Department of Applied Chemistry and Biotechnology, Chiba University
  • NOMOTO Tomonori
    Department of Applied Chemistry and Biotechnology, Chiba University
  • TOYOTA Taro
    Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo Precursory Research for Embryonic Science and Technology (PRESTO), Japan Science and Technology Agency
  • FUJINAMI Masanori
    Department of Applied Chemistry and Biotechnology, Chiba University

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  • Surface Tension Gradient around an Alcohol Droplet Moving Spontaneously on a Water Surface

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抄録

The surface tension gradients in the front and rear sides of a 1-hexanol droplet exhibiting self-propelled motion were compared by a time-resolved quasi-elastic laser scattering method. The velocity of the alcohol droplet strongly correlated to the difference of the inverse of the recovery distances of the surface tensions between the front and rear sides. This result indicates that the spontaneous alcohol droplet motion is governed by an imbalance in the Marangoni convection flow, induced by an asymmetric surface tension distribution.

収録刊行物

  • Analytical Sciences

    Analytical Sciences 30 (4), 441-444, 2014

    社団法人 日本分析化学会

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