Dynamic hydrophobicity of water droplets on the line-patterned hydrophobic surfaces

J. H. Song, M. Sakai, N. Yoshida, S. Suzuki, Y. Kameshima, A. Nakajima

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

Static and dynamic hydrophobicities of water droplet on a patterned surface prepared using fluoroalkylsilanes with different molecular chain lengths were investigated. Contact angles on the patterned surfaces well agreed with values predicted using Cassie's theory. On the same line width ratio, total retention force was governed by the fluoroalkylsilane with slow-sliding acceleration. The total retention force decreased with the decreasing width ratio of silane with slow-sliding acceleration on the surface. These results imply that the sliding acceleration of water droplets on a hydrophobic surface depends both on chemical composition and patterning structure.

Original languageEnglish
Pages (from-to)2711-2717
Number of pages7
JournalSurface Science
Volume600
Issue number13
DOIs
Publication statusPublished - Jul 1 2006
Externally publishedYes

Keywords

  • Contact angle
  • Dynamic hydrophobicity
  • Pattern
  • Sliding acceleration
  • Sliding angle

ASJC Scopus subject areas

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

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