Wetting, roughness and flow boundary conditions

Details Wetting, roughness and flow boundary conditions Wetting, roughness and flow boundary conditions

2010-09-24

arxiv.org/abs/1009.4772v3

J. Phys.: Condens. Matter 23 (2011) 184104 (15pp)

Physics

Condensed Matter

Soft Condensed Matter

28 pages, 14 figures, 4 tables; accepted for publication in Journal of Physics: Condensed Matter

Scientific paper

We discuss how the wettability and roughness of a solid impacts its hydrodynamic properties. We see in particular that hydrophobic slippage can be dramatically affected by the presence of roughness. Owing to the development of refined methods for setting very well-controlled micro- or nanotextures on a solid, these effects are being exploited to induce novel hydrodynamic properties, such as giant interfacial slip, superfluidity, mixing, and low hydrodynamic drag, that could not be achieved without roughness.

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