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ID 34157
FullText URL
Author
Widom, B.
Abstract
A mean-field density-functional model often used in the past in the study of line and boundary tensions at wetting and prewetting transitions is reanalyzed by extensive numerical calculations, approaching the wetting transition much more closely than had previously been possible. The results are what are now believed to be definitive for the model. They include strong numerical evidence for the presence of the logarithmic factors predicted by theory both in the mode of approach of the prewetting line to the triple-point line at the point of the first-order wetting transition and in the line tension itself on approach to that point. It is also demonstrated with convincing numerical precision that the boundary tension on the prewetting line and the line tension on the triple-point line have a common limiting value at the wetting transition, again as predicted by theory. As a by product of the calculations, in the model's symmetric three-phase state, far from wetting, it is found that certain properties of the model's line tension and densities are almost surely given by simple numbers arising from the symmetries, but proving that these are exact for the model remains a challenge to analytical theory.
Keywords
SURFACE PHASES
FLUID PHASES
SUBSTRATE
ADSORPTION
INTERFACE
CONTACT
MODEL
ICE
Note
Digital Object Identifer:10.1063/1.2752156
Published with permission from the copyright holder. This is the institute's copy, as published in Journal of Chemical Physics, AUG 2007, Volume 127, Issue 6.
Publisher URL:http://dx.doi.org/10.1063/1.2752156
Direct access to Thomson Web of Science record
Copyright © 2007 American Institute of Physics
Published Date
2007-08-14
Publication Title
Journal of Chemical Physics
Volume
volume127
Issue
issue6
Publisher
American Institute of Physics
ISSN
0021-9606
NCID
AA00694991
Content Type
Journal Article
language
英語
Copyright Holders
American Institute of Physics
File Version
publisher
Refereed
True
DOI
PubMed ID
Web of Sience KeyUT
Submission Path
physics_general/29