Capillary condensation of helium in narrow slit pores

E. Cheng, M. R. Swift, M. W. Cole

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

We study the capillary condensation of liquid 4He films inside narrow slit pores with a density functional model and compare the result to the predictions of the Kelvin equation. Our investigation, in the wetting situation, indicates that pores with sizes up to 100 Å are still too small for the macroscopic thermodynamic arguments used to derive the Kelvin equation to be successful. The discrepancy is tentatively attributed to the use of a slab-density model and bulk parameters in the region of very thin films.

Original languageEnglish (US)
Pages (from-to)4064-4067
Number of pages4
JournalThe Journal of chemical physics
Volume99
Issue number5
DOIs
StatePublished - 1993

All Science Journal Classification (ASJC) codes

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

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