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ID 34194
FullText URL
Author
Widom, Benjamin
Abstract

Recent ideas about the analog for a three-phase contact line of the Gibbs adsorption equation for interfaces are illustrated in a mean-field density-functional model. With $d¥tau$ the infinitesimal change in the line tension $¥tau$ that accompanies the infinitesimal changes $d¥mu_i$ in the thermodynamic field variables $¥mu_i$ and with $¥Lambda_i$ the line adsorptions, the sum $d¥tau + ¥Sigma ¥Lambda_i d¥mu_i$, unlike its surface analog, is not 0. An equivalent of this sum in the model system is evaluated numerically and analytically. A general line adsorption equation, which the model results illustrate, is derived.

Keywords
line tension
line adsorption
adsorption equation
three-phase equilibria
partial wetting
Note
Digital Object Identifer:10.1080/00268970600958574
Published with permission from the copyright holder. This is the institute's copy, as published in Molecular Physics, 2006, Volume 104, Issue 22-24, Pages 3469-3477.
Publisher URL:http://dx.doi.org/10.1080/00268970600958574
Copyright © 2006 Taylor & Francis, All rights reserved.
Published Date
2006-10-01
Publication Title
Molecular Physics
Volume
volume104
Issue
issue22-24
Start Page
3469
End Page
3477
Content Type
Journal Article
language
English
Refereed
True
DOI
Submission Path
physical_and_theoretical_chemistry/8