Nonzero Ideal Gas Contribution to the Surface Tension of Water

Marcello Sega, Balázs Fábián, Pál Jedlovszky

Research output: Contribution to journalArticle

9 Citations (Scopus)


Surface tension, the tendency of fluid interfaces to behave elastically and minimize their surface, is routinely calculated as the difference between the lateral and normal components of the pressure or, invoking isotropy in momentum space, of the virial tensor. Here we show that the anisotropy of the kinetic energy tensor close to a liquid-vapor interface can be responsible for a large part of its surface tension (about 15% for water, independent from temperature).

Original languageEnglish
Pages (from-to)2608-2612
Number of pages5
JournalJournal of Physical Chemistry Letters
Issue number12
Publication statusPublished - Jun 15 2017

ASJC Scopus subject areas

  • Materials Science(all)
  • Physical and Theoretical Chemistry

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