Wettability of superhydrophobic surface through tuning microcosmic structure

Wettability is one of the most important properties which weighs hydrophobic capability of superhydrophobic surface. There are close relations between microcosmic structure and wettability of superhydrophobic surface. In this paper Wenzel model and Cassie model which bring on superhydrophobic phenomenon were discussed and the effect of microcosmic structure to apparent contact angle of superhydrophobic surface was analysed through the models. The analysis shows that the state of preparation superhydrophobic surface should be coincident with Cassie model and its wettability can be controled through changing geometry parameters of microcosmic structure to obtain a superhydrophobic surface with greater apparent contact angle.