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Precursor film ahead droplet on solid with temperature gradient

  • Physics Of Contact Line And Wetting/Thermocapillary Flows
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Abstract

An experimental study on the dynamics of the fluid in the vicinity of the boundary line of three phases was carried out. The boundary of solid-liquid-gas interface is so-called ‘contact line.’ It has been known over about a century there exists a wafer-thin liquid film ahead the macroscopic contact line. This wafer-thin liquid film has been known as the precursor film. The present authors paid their special attention to the existing length of the precursor film ahead traveling droplet on a solid substrate with non-uniform temperature distribution. The length of the precursor film was detected by applying a conventional laser interferometer, and the position of the macroscopic contact line was grasped by simultaneous observation with a white light source. The present manuscript indicates the precursor film length is strongly affected by the temperature gradient of the solid surface.

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Authors and Affiliations

  1. Graduate School, Tokyo University of Science, Noda, Chiba, Japan

    Yusuke Kizaki & Takumi Konisho

  2. Tokyo University of Science, 2641 Yamazaki, 278-8510, Noda, Chiba, Japan

    Ichiro Ueno

Authors
  1. Yusuke Kizaki
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  2. Takumi Konisho
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  3. Ichiro Ueno
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Corresponding author

Correspondence to Yusuke Kizaki.

Additional information

Paper was presented on the Second International Topical Team Workshop on TWO-PHASE SYSTEMS FOR GROUND AND SPACE APPLICATIONS October 26–28, 2007, Kyoto, Japan.

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Kizaki, Y., Konisho, T. & Ueno, I. Precursor film ahead droplet on solid with temperature gradient. Microgravity Sci. Technol 19, 106–108 (2007). https://doi.org/10.1007/BF02915767

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  • DOI: https://doi.org/10.1007/BF02915767

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