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Wetting films on chemically heterogeneous substrates

C. Bauer·S. Dietrich
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Abstract

Based on a microscopic density functional theory we investigate the morphology of thin liquidlike wetting films adsorbed on substrates endowed with well-defined chemical heterogeneities. As paradigmatic cases we focus on a single chemical step and on a single stripe. In view of applications in microfluidics the accuracy of guiding liquids by chemical microchannels is discussed. Finally we give a general prescription of how to investigate theoretically the wetting properties of substrates with arbitrary chemical structures.

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C. Bauer, S. Dietrich. 1999-06-11. Wetting films on chemically heterogeneous substrates. https://doi.org/10.1103/physreve.60.6919

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