Evaporation and sliding of water droplets on fluoroalkylsilane coatings with nanoscale roughness

Tsutomu Furuta, Akira Nakajima, Munetoshi Sakai, Toshihiro Isobe, Yoshikazu Kameshima, Kiyoshi Okada

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)

Abstract

Evaporation and sliding behaviors of water droplets were investigated on smooth and rough fluoroalkylsilane coatings. The rough coating possesses nanoscale roughness and chemical heterogeneity on its surface. Evaporation behaviors for these two coatings differed when nanoliter-scale droplets were used, although they were nearly identical for microliter-scale droplets. The droplets on the smooth coating exhibit greater sliding acceleration and a larger slipping velocity ratio than those on the rough coating. Both the evaporation behavior of nanoliter-scale droplets and sliding velocity of microliter-scale droplets were affected by nanoscale surface heterogeneity. They are indicators for highly homogeneous smooth silane coatings.

Original languageEnglish
Pages (from-to)5417-5420
Number of pages4
JournalLangmuir
Volume25
Issue number10
DOIs
Publication statusPublished - May 19 2009
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

Fingerprint Dive into the research topics of 'Evaporation and sliding of water droplets on fluoroalkylsilane coatings with nanoscale roughness'. Together they form a unique fingerprint.

Cite this