WETTING IN 1+1 DIMENSIONS WITH TWO-SCALE ROUGHNESS

Abstract : We show that a two-scale model in 1+1 dimensions enhances su-perhydrophobicity. The two scales may differ by a factor of order two or three, or by a large factor in a scaling limit. In both cases, we compute explictly the macroscopic contact angles as function of the flat material contact angle and aspect ratios. In addition to the Cassie-Baxter states with air cushion below the droplet and to the Wenzel states, completely wet, there appear several mixed states with air trapped in corners. PACS classification: 68.08.Bc, 68.03.Cd , 05.40.-a.
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https://hal.archives-ouvertes.fr/hal-01093709
Contributor : Thierry Huillet <>
Submitted on : Thursday, December 11, 2014 - 8:47:36 AM
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Joel de Coninck, François Dunlop, Thierry Huillet. WETTING IN 1+1 DIMENSIONS WITH TWO-SCALE ROUGHNESS. 2014. ⟨hal-01093709⟩

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