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Measurement of surface tension of liquid microdroplets through observation of droplet collision

机译:通过观察液滴碰撞来测量液体微滴的表面张力

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摘要

We investigate the applicability of measuring surface tension of liquid microdroplets by analyzing their oscillatory behavior induced by droplet collision. The eigenfrequency of droplet oscillation reflects surface tension for small-amplitude oscillation. In this study, the oscillation frequencies of ethanol-ethanol and water-water droplet collisions are measured by direct observation. We experimentally verify that surface tension can be measured for deformation smaller than 10% of the droplet radius. The collision between ethanol-water droplets is also analyzed. The eigenfrequency induced by unlike-droplet collision exhibits a peculiar behavior, which may be attributed to the temporal hybrid structure of a combined droplet. (C) 2017 The Japan Society of Applied Physics.
机译:我们通过分析液滴碰撞引起的振荡行为来研究测量液体微滴表面张力的适用性。液滴振荡的本征频率反映了小振幅振荡的表面张力。在这项研究中,通过直接观察来测量乙醇-乙醇碰撞和水滴碰撞的振荡频率。我们通过实验验证了可以测量小于液滴半径10%的变形的表面张力。还分析了乙醇-水滴之间的碰撞。液滴碰撞引起的本征频率表现出特殊的行为,这可能归因于组合液滴的时间混合结构。 (C)2017年日本应用物理学会。

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  • 来源
    《Japanese journal of applied physics》 |2017年第7s1期|07JB02.1-07JB02.3|共3页
  • 作者单位

    Univ Tokyo, Inst Ind Sci, Meguro Ku, Tokyo 1538505, Japan|Univ Tokyo, Fac Engn, Dept Appl Phys, Bunkyo Ku, Tokyo 1338656, Japan;

    Univ Tokyo, Inst Ind Sci, Meguro Ku, Tokyo 1538505, Japan;

    Univ Tokyo, Inst Ind Sci, Meguro Ku, Tokyo 1538505, Japan;

    Univ Tokyo, Inst Ind Sci, Meguro Ku, Tokyo 1538505, Japan|Univ Tokyo, Fac Engn, Dept Appl Phys, Bunkyo Ku, Tokyo 1338656, Japan;

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