Wetting in 1+1 dimensions with two-scale roughness

Joël de Coninck, François Dunlop and Thierry Huillet

Physica A: Statistical Mechanics and its Applications, 2015, vol. 438, issue C, 398-415

Abstract: We show that a two-scale model in 1+1 dimensions enhances superhydrophobicity. 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 explicitly 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.

Keywords: Wetting; Cassie–Baxter; Wenzel; Hydrophobicity; Roughness (search for similar items in EconPapers)
Date: 2015
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Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:438:y:2015:i:c:p:398-415

DOI: 10.1016/j.physa.2015.06.030

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