Molecular Simulations of Dewetting

Details Molecular Simulations of Dewetting Molecular Simulations of Dewetting

1999-10-29

arxiv.org/abs/cond-mat/9910497v1

Physics

Condensed Matter

Soft Condensed Matter

4 pages, revtex, 4 eps figures, submitted to PRL

Scientific paper

10.1103/PhysRevLett.84.4401

We have studied the breakup and subsequent fluid flow in very thin films of partially wetting liquid on solid substrates, using molecular dynamics simulations. The liquid is made of short chain molecules interacting with Lennard-Jones interactions, and the solid is modeled as a clean crystal lattice whose atoms have thermal oscillations. Films below a critical thickness are found to exhibit a spontaneous spinodal-like instability leading to dry patches, as predicted theoretically and observed in some experiments. Liquid withdrawing from a dry patch collects in a moving rim whose fluid dynamics is only partially in agreement with earlier predictions.

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