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Title: LINE TENSION AT WETTING - INTERFACE DISPLACEMENT MODEL BEYOND THE GRADIENT-SQUARED APPROXIMATION
Authors: DOBBS, HT ×
Indekeu, Joseph #
Issue Date: 1993
Publisher: ELSEVIER SCIENCE BV
Series Title: Physica. A: Statistical and theoretical physics vol:201 issue:4 pages:457-481
Conference: date:KATHOLIEKE UNIV LEUVEN,VASTE STOF FYSIKA MAGNET LAB,B-3001 LOUVAIN,BELGIUM
Abstract: We study the transition zone or contact line between a thin film and bulk liquid, and calculate the line tension tau, employing an interface displacement model equivalent to Derjaguin's and de Gennes' approach. We investigate the behaviour Of tau in the limit that the contact angle theta tends to zero, approaching a wetting phase transition. Previous results for wetting and prewetting, derived in the gradient-squared approximation of the model, remain valid when the gradient is included to all orders. The interesting singular behaviour Of tau at wetting is universal, due to the critical phenomena that have recently been found to underly first-order as well as continuous wetting transitions. Finally we critically review two contact-line instabilities that have been associated with contact-angle hysteresis, and propose an alternative physical interpretation.
ISSN: 0378-4371
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Solid State Physics and Magnetism Section
× corresponding author
# (joint) last author

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