Complete Wetting of Nanosculptured Substrates

Details Complete Wetting of Nanosculptured Substrates Complete Wetting of Nanosculptured Substrates

2006-05-12

arxiv.org/abs/cond-mat/0605323v1

Physics

Condensed Matter

Statistical Mechanics

10 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.97.106102

Complete wetting of geometrically structured substrates by one-component fluids with long-ranged interactions is studied. We consider periodic arrays of rectangular or parabolic grooves and lattices of cylindrical or parabolic pits. We show that the midpoint interfacial heights within grooves and pits are related in the same way as for complete wedge and cone filling. For sufficiently deep cavities with vertical walls and small undersaturation, an effective planar scaling regime emerges. The scaling exponent is -1/3 in all cases studied, and only the amplitudes depend on the geometrical features. We find quantitative agreement with recent experimental data for such systems.

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