Nucleation in molecular and dipolar fluids: Interaction site model

Vicente A Talanquer, David W. Oxtoby

Research output: Contribution to journalArticle

Abstract

We consider the effect of molecular anisotropy and dipole moment on the rate of homogeneous and heterogeneous nucleation of molecular and dipolar fluids. Density functional theory is applied to an interaction site model of molecules composed of two tangent or fused hard spheres interacting through Lennard-Jones and coulombic potentials. Interfacial properties are conditioned by entropy vs energy competition. For nucleation on a charged hard sphere, the calculated rates depend strongly on the size and charge of the central seed. Preferred surface orientations of the dipolar molecules are responsible for nucleation rates differing by several orders of magnitude for charges of different sign.

Original languageEnglish (US)
Pages (from-to)3686-3695
Number of pages10
JournalPhysics of Fluids
Volume10
Issue number11
Publication statusPublished - 1967
Externally publishedYes

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ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Mechanics of Materials
  • Computational Mechanics
  • Fluid Flow and Transfer Processes

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