Microscopic Model for Thin Film Spreading

Douglas B. Abraham, Rodolfo Cuerno, Esteban Moro
2002 Physical Review Letters  
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.
doi:10.1103/physrevlett.88.206101 pmid:12005579 fatcat:jv4pbovzgjdt5cvudgc2mtvrx4