Wetting Transition from Wenzel to Cassie States: Thermodynamic Analysis.

ABSTRACT: Superhydrophobicity is closely linked to the chemical composition and geometric characteristics of surface roughness. Building on our structural studies on water and air-water interfaces, this work aims to elucidate the mechanism underlying the wetting transition from the Wenzel to the Cassie state on a hydrophobic surface. In the Wenzel state, the grooves are filled with water, meaning that the surface roughness becomes embedded in the liquid. To evaluate the effects of surface roughness on water structure, a wetting parameter (W_Roughness) is proposed, which is closely related to the geometric characteristics of roughness, such as pillar size, width, and height. During the wetting transition from Wenzel to Cassie states, the critical wetting parameter (W_Rough

SUBMITTER: Sun Q 

PROVIDER: S-EPMC11818709 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature