Soret effect in thin liquid films: Localized running drops, holes and stripesI. D. Borcia1, 2, R. Borcia1 and M. Bestehorn1
1 Department of Theoretical Physics II, Brandenburg University of Technology Erich-Weinert-Strasse 1, 03046-Cottbus, Germany
2 "Alexandru Ioan Cuza" University, Faculty of Physics Department of Solid State & Theoretical Physics Blvd. Carol I, 11, 700506-Iasi, Romania
received 20 February 2006; accepted in final form 10 May 2006
published online 31 May 2006
We examine oscillatory instabilities occurring in a thin liquid film of a binary mixture with large lateral extension. The theoretical model is based on the long-wave approximation for thin films. Linear stability analysis is performed in order to predict the film behavior at onset. Applying 2D and 3D nonlinear simulations soliton-like structures are observed in the oscillatory regime.
68.15.+e - Liquid thin films.
47.54.-r - Fluid dynamics: Pattern selection, pattern formation.
64.75.+g - Solubility, segregation, and mixing; phase separation.
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