Phase diagrams of multilayer adsorbed methane

David L. Goodstein, Jeffrey J. Hamilton, Mark J. Lysek, G. Vidali

Research output: Contribution to journalArticle

19 Scopus citations

Abstract

We propose multilayer phase diagrams based on recent observations of methane adsorbed on graphite and gold (111). Methane wets graphite at all temperatures observed, but it fully wets gold only above the bulk triple point. Possible reasons for this difference in behavior are discussed. The methane-graphite phase diagram also includes layer by layer condensation with critical points leading to a predicted bulk roughening temperature, and an extension of the bulk melting curve into the multilayer film region where it closes at a triple point with a compressed incommensurate first layer solid phase. Experimental evidence for these features is presented and discussed.

Original languageEnglish (US)
Pages (from-to)187-199
Number of pages13
JournalSurface Science
Volume148
Issue number1
DOIs
StatePublished - Dec 1 1984
Externally publishedYes

ASJC Scopus subject areas

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

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