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SYSO: Symposium Self-organizing Surfaces and Interfaces

SYSO 3: Self-Organizing Surfaces and Interfaces - Posters

SYSO 3.7: Poster

Mittwoch, 25. März 2009, 17:30–19:30, P3

Thin Film Model for Evaporating Colloidal Suspensions — •Lubor Frastia, Andrew J. Archer, and Uwe Thiele — Department of Mathematical Sciences, Loughborough University, Loughborough, Leicestershire, LE11 3TU, UK

Based on long-wave approximation [1,2], we introduce a model for an evaporating film or drop of a colloidal suspension. Some basic assumptions regarding the various transport processes that are involved (convection, diffusion, evaporation) are used as well. We use the resulting system of coupled evolution equations to study the evaporation of drops on a solid substrate. Finally, we discuss the conditions for the self-pinning of the receding contact line that may result in the deposition of a dried-in ring of particles.

[1] S.Kalliadasis, U.Thiele, Thin films of Soft Matter, Springer Wien, p.25-94 (2007)

[2] A.V.Lyushnin, A.A.Golovin, L.M.Pismen, Phys. Rev. E 65, 021602, (2002)