Relationship between sliding acceleration of water droplets and dynamic contact angles on hydrophobic surfaces

Munetoshi Sakai, Jeong Hwan Song, Naoya Yoshida, Shunsuke Suzuki, Yoshikazu Kameshima, Akira Nakajima

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

This study measured sliding acceleration of water droplets on hydrophobic solid surfaces and used expanding and contracting method to compare that value with dynamic contact angles. Sliding action of the droplet was classified into three motion categories: constant accelerated motion, constant velocity and stasis. Differences exist in the dependencies of contact radius and the injection-suction rate in dynamic contact angle hysteresis according to these categories. This method is an effective indicator of water droplets' sliding acceleration.

Original languageEnglish
Pages (from-to)L204-L208
JournalSurface Science
Volume600
Issue number16
DOIs
Publication statusPublished - Aug 15 2006
Externally publishedYes

Keywords

  • Contact angle
  • Contact angle hysteresis
  • Hydrophobicity
  • Sliding acceleration
  • Sliding angle

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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