Hydrophobic coatings from plasma polymerized vinyltrimethylsilane

Mark P. Bonnar, Bryce M. Burnside, Jill Christie, Elizabeth J. Sceal, Clare E. Troupe, J. I B Wilson

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)


Thin-films have been deposited onto silicon and metal substrates by plasma polymerization of vinyltrimethylsilane (VTMS), to provide hydrophobic coatings for dropwise condensation of steam. The deposition conditions have been sampled by a set of statistically designed experiments, and the films' thicknesses, water droplet contact angles, elemental compositions (by XPS), and -CHx contents have been measured. There is a strong correlation between these film properties and their deposition conditions. The films that continue to provide successful long-term dropwise condensation had been deposited at a low rate onto heated substrates, such that they have high water contact angle and high -CHx content. This required a plasma that provided a low electron energy input per precursor species collision.

Original languageEnglish
Pages (from-to)117-125
Number of pages9
JournalChemical Vapor Deposition
Issue number3
Publication statusPublished - Jun 1999


  • Contact angle
  • Hydrophobic coating
  • Plasma polymer
  • Statistical design
  • VTMS


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