Complete wetting of curved microscopic channels

Lorenzo Bruschi*, Giovanni Fois, Giampaolo Mistura, Massimo Tormen, Valeria Garbin, Enzo Di Fabrizio, Annamaria Gerardino, Marco Natali

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

We have measured the adsorption of argon films on arrays of microscopic nonlinear cusps and of semicircular channels. In the former case, we observe a distinct crossover from a planarlike to a geometry dependent growth behavior near liquid-vapor bulk coexistence, characterized by a growth exponent equal to -0.96±0.04 in very good agreement with the predictions of a recent scaling theory [C. Rascon and A. O. Parry, J. Chem. Phys. 112, 5175 (2000)]. The crossover location is also consistent with theory. Instead, on the concave channels we find a much steeper growth near saturation that may signal the formation of two menisci at both sides of the channel bottom.

Original languageEnglish (US)
Article number144709
JournalJournal of Chemical Physics
Volume125
Issue number14
DOIs
StatePublished - Oct 20 2006

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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