A microscopic model for thin film spreading

Details A microscopic model for thin film spreading A microscopic model for thin film spreading

2002-01-14

arxiv.org/abs/cond-mat/0201218v1

Physical Review Letters 88, 206101 (2002)

Physics

Condensed Matter

Statistical Mechanics

4 pages, 3 figures. Submitted

Scientific paper

10.1103/PhysRevLett.88.206101

A microscopic, driven lattice gas model is proposed for the dynamics and spatio-temporal fluctuations of the precursor film observed in spreading experiments. Matter is transported both by holes and particles, and the distribution of each can be described by driven diffusion with a moving boundary. This picture leads to a stochastic partial differential equation for the shape of the boundary, which agrees with the simulations of the lattice gas. Preliminary results for flow in a thermal gradient are discussed.

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