Direct Observation of the Wetting Mode Transition during Evaporation of Water Droplets on Superhydrophobic Surfaces with Random Roughness Structure

DOI Web Site 29 References
  • FURUTA Tsutomu
    Department of Metallurgy and Ceramic Science Graduate School of Science and Engineering, Tokyo Institute of Technology Kanagawa Academy of Science and Technology
  • ISOBE Toshihiro
    Department of Metallurgy and Ceramic Science Graduate School of Science and Engineering, Tokyo Institute of Technology
  • SAKAI Munetoshi
    Kanagawa Academy of Science and Technology
  • MATSUSHITA Sachiko
    Department of Metallurgy and Ceramic Science Graduate School of Science and Engineering, Tokyo Institute of Technology
  • NAKAJIMA Akira
    Department of Metallurgy and Ceramic Science Graduate School of Science and Engineering, Tokyo Institute of Technology Kanagawa Academy of Science and Technology

Bibliographic Information

Other Title
  • ランダムな粗さをもつ超撥水表面上での水滴の蒸発過程での濡れ転移の直接観察

Search this article

Abstract

Wetting mode and shape changes of ultrasmall water droplets (80−100 nL) were observed during evaporation on superhydrophobic surfaces with different random roughness sizes. Observation of droplets from a top view revealed that the nanometer-coating transition was from Cassie's mode to air-containing Wenzel's mode. For a sunny-side-up like state, flat liquid film formation around the droplet edge was observed on the superhydrophobic surface after the wetting mode transition. This state seems to depend on the relation of surface energy values between the solid surface and liquid.

Journal

References(29)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top