Dynamics of condensation of wetting layer in time-dependent Ginzburg-Landau model

Details Dynamics of condensation of wetting layer in time-dependent Ginzburg-Landau model Dynamics of condensation of wetting layer in time-dependent Ginzburg-Landau model

2007-08-23

arxiv.org/abs/0708.3138v1

Physics

Condensed Matter

Soft Condensed Matter

12 pages, 3 figures, J.Colloid Interface Sci. accepted for publication

Scientific paper

The dynamics of liquid condensation on a substrate or within a capillary is studied when the wetting film grows via interface-limited growth. We use a phenomenological time-dependent Ginzburg-Landau (TDGL)-type model with long-range substrate potential. Using an order parameter, which does not directly represent the density, we can derive an analytic formula for the interfacial growth velocity that is directly related to the substrate potential. Using this analytic expression the growth of wetting film is shown to conform to a power-law-type growth, which is due to the presence of a long-range dispersion force.

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