Volume 72, Number 6, December 2005
|Page(s)||1004 - 1010|
|Section||Condensed matter: structural, mechanical and thermal properties|
|Published online||16 November 2005|
3D wedge filling and 2D random-bond wetting
Departamento de Física Atómica, Molecular y Nuclear, Area de Física Teórica Universidad de Sevilla - Apartado de Correos 1065, 41080 Sevilla, Spain
2 Department of Mathematics, Imperial College - 180 Queen's Gate London SW7 2BZ, United Kingdom
Accepted: 19 October 2005
Fluids adsorbed in 3D wedges are shown to exhibit two types of continuous interfacial unbinding corresponding to critical and tricritical filling, respectively. Analytic solution of an effective interfacial model based on the transfer-matrix formalism allows us to obtain the asymptotic probability distribution functions for the interfacial height when criticality and tricriticality are approached. Generalised random-walk arguments show that, for systems with short-ranged forces, the critical singularities at these transitions are related to 2D complete and critical wetting with random-bond disorder, respectively.
PACS: 68.08.Bc – Wetting / 05.70.Np – Interface and surface thermodynamics / 68.08.De – Structure: measurements and simulations
© EDP Sciences, 2005
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