A patching model for surface tension and the Tolman length

T. V. Bykov, X. C. Zeng

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Abstract

In the framework of density functional theory (DFT), a patching model for the density profile of the liquid-vapor interface is developed. The patching is based on analytical expressions of the asymptote of the density profiles. Derived from the model the surface tension of planar liquid-vapor interface as well as the Tolman length can be computed from analytic expressions. Two prototype systems are considered; the Yukawa and the Lennard-Jones. As a result, the temperature dependence of the surface tension as well as the Tolman length are obtained. The results are compared with numerical DFT calculations.

Original languageEnglish (US)
Pages (from-to)3705-3713
Number of pages9
JournalJournal of Chemical Physics
Volume111
Issue number8
DOIs
Publication statusPublished - Aug 22 1999

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ASJC Scopus subject areas

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

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