We study a lattice model for the spreading of fluid films, which are a few molecular layers thick, in narrow channels with inert lateral walls. We focus on systems connected to two particle reservoirs at different chemical potentials, considering an attractive substrate potential at the bottom, confining sidewalls, and hard-core repulsive fluid-fluid interactions. Using kinetic Monte Carlo simulations we find a diffusive behavior. The corresponding diffusion coefficient depends on the density and is bounded from below by the free one-dimensional diffusion coefficient, valid for an inert bottom wall. These numerical results are rationalized within the corresponding continuum limit.
Spreading in narrow channels. Publishing Authors By Initials
Journal: Physical review. E, Statistical, nonlinear, and so
VOLUME: 76
Page Numbers: 041127
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ISSN: 1539-3755
DAY: 23
MONTH: 10
YEAR: 2007
Spreading in narrow channels. Information
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LANGUAGE: eng
NlmUniqueID: 101136452
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Grant and Affiliation Information for Spreading in narrow channels.
AFFILIATION: Max-Planck-Institut für Metallforschung, Heisenbergstrasse 3, D-70569 Stuttgart, Germany and Institut für Theoretische und Angewandte Physik, Universität Stuttgart, Pfaffenwaldring 57, D-70569 Stuttgart, Germany.