Statistical mechanics of surface tension and Tolman length of dipolar fluids

T. V. Bykov, Xiao C Zeng

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

The Tolman length (δ) characterizes the first-order correction to the surface tension (σ) due to curvature of the interface. Statistical mechanical expressions for σ and δ were derived previously by Blokhuis and Bedeaux [Physica A 1992, 184, 42] for nonpolar fluids. Here Blokhuis and Bedeaux's approach is extended to dipolar fluids. Two approximations to the pair correlation function are employed, and their effects on σ and δ are examined. The dependence of σ and δ on temperature and dipole moment is also explored. It is found that σ increases with the dipole moment while |δ| decreases as the dipole moment is increased. The sign of δ is, however, negative.

Original languageEnglish (US)
Pages (from-to)11586-11594
Number of pages9
JournalJournal of Physical Chemistry B
Volume105
Issue number47
DOIs
StatePublished - Nov 29 2001

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Statistical mechanics
Dipole moment
statistical mechanics
Surface tension
interfacial tension
dipole moments
Fluids
fluids
curvature
moments
approximation
Temperature
temperature

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

Statistical mechanics of surface tension and Tolman length of dipolar fluids. / Bykov, T. V.; Zeng, Xiao C.

In: Journal of Physical Chemistry B, Vol. 105, No. 47, 29.11.2001, p. 11586-11594.

Research output: Contribution to journalArticle

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