Title: Monte-Carlo simulation study of the thicknesses of wetting layers in pure and impure (quenched random-field) environments
Authors: Langie, Greet ×
Nijmeijer, Marco
Nikas, Yvonne
Indekeu, Joseph #
Issue Date: 1993
Publisher: Elsevier
Series Title: Physica A, Statistical and Theoretical Physics vol:192 issue:3 pages:391-409
Abstract: Wetting layer thicknesses have been measured in Monte Carlo simulations of a three-dimensional solid-on-solid model of adsorption. In a pure environment the average thickness l is found to follow the expected logarithmic law as a function of the undersaturation or bulk field h(B). At small h(B) the results are consistent with a cross-over to a power law l is-proportional-to h(B)-1, predicted on the basis of finite-size effects. In an impure quenched random-field environment a logarithmic law is found at relatively large h(B), as for the pure system. When h(B) is lowered the simulations show pinning of the interface by the random fields, implying slowing down of the relaxation, strong dependence on the starting configuration, and strong sensitivity to the random-field environment. In addition to the cross-over due to the finite system size, these problems have made the expected power-law behaviour l is-proportional-to h(B)-1/2 inextricable.
ISSN: 0378-4371
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Technologiecluster Werktuigkundige Industriële Ingenieurstechnieken
Solid State Physics and Magnetism Section
Theoretical Physics Section
Mechanical Engineering Technology TC, Technology Campus De Nayer Sint-Katelijne-Waver
× corresponding author
# (joint) last author

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