Spreading in narrow channels

Details Spreading in narrow channels Spreading in narrow channels

2007-01-29

arxiv.org/abs/cond-mat/0701722v1

Phys. Rev. E 76, 041127 (2007)

Physics

Condensed Matter

Statistical Mechanics

16 pages, 10 figures

Scientific paper

10.1103/PhysRevE.76.041127

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 side walls, 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.

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