Water adsorption and desorption on ultra-low friction sulfur-doped hydrogenated carbon films

Christina A. Freyman, Bo Zhao, Yanfeng Chen, Yip Wah Chung*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Water adsorption on hydrogenated carbon film surfaces can drastically affect friction behaviour. In this work, we investigate water adsorption and desorption properties of sulfur-doped hydrogenated films, which we have observed to retain ultra-low friction properties of hydrogenated carbon films in humid air. Water adsorption studies using a quartz crystal microbalance show that there is an almost threefold reduction in equilibrium water coverage at room temperature on hydrogenated carbon films doped with 5at.% sulfur. Thermal desorption studies indicate that sulfur doping weakens the binding of water molecules on hydrogenated carbon film surfaces.

Original languageEnglish (US)
Article numberS03
Pages (from-to)S1721-S1726
JournalJournal of Physics Condensed Matter
Volume18
Issue number32
DOIs
StatePublished - Aug 16 2006

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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