Cassie–Baxter to Wenzel state wetting transition: a 2D numerical simulation

We simulate in two dimensions the wetting behavior of a liquid droplet placed on a solid surface structured by a regular distribution of pillars. For this purpose, as in a recent study, we used the Potts Hamiltonian formalism. We focused our investigations on the transition between the wetting regim...

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Bibliographic Details
Published in:RSC advances 2013-01, Vol.3 (46), p.24530-24534
Main Authors: Lopes, Daisiane M., Ramos, Stella M. M., de Oliveira, Luciana R., Mombach, José C. M.
Format: Article
Language:English
Subjects:
Chemical Sciences
Computer simulation
Engineering Sciences
Physics
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Summary:We simulate in two dimensions the wetting behavior of a liquid droplet placed on a solid surface structured by a regular distribution of pillars. For this purpose, as in a recent study, we used the Potts Hamiltonian formalism. We focused our investigations on the transition between the wetting regimes characteristic of the super-repellent property of our surfaces. We determined several physical variables influencing such a property and we also built the wetting phase diagrams of which two different states and a transition zone were identified. The transition happens between a Cassie-Baxter state (CB) and the Wenzel state. We also show that the wetting transition is affected by fluctuations and liquid compressibility.
ISSN:2046-2069
2046-2069
DOI:10.1039/c3ra45258a