Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
974812 | Physica A: Statistical Mechanics and its Applications | 2015 | 18 Pages |
Abstract
•Cassie–Baxter, Wenzel and intermediate wetting states.•Hydrophobicity with two-scale roughness.•Exact computation of surface phase diagrams in 1+11+1 dimensions.
We show that a two-scale model in 1+11+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
Related Topics
Physical Sciences and Engineering
Mathematics
Mathematical Physics
Authors
Joël de Coninck, François Dunlop, Thierry Huillet,