Facile Fabrication of Polysiloxane Nanorods on Magnesium Surface in the Presence of 1,6-diphosphono-hexane to Obtain a Superhydrophobic Surface

摘要

Superhydrophobic surfaces have been the focus of both industry and academic research. The high water repellency exhibited by these surfaces is based on a natural phenomenon (i.e. Lotus effect). Superhydrophobicity is explained by the Wenzel and Cassie-Baxter model. According to this model, the air trapped in micro-ano-scale rough surfaces is a key factor in making these surfaces superhydrophobic. The trapped air and the micro-ano-scale rough surface act to suspend the water droplet on the tops of the surface microstructure. In nature, there are many examples of plants and animals utilizing superhydrophobicity for various purposes. There are two factors that determine the superhydrophobicity of a surface. The first one is the chemical composition on the surface, which for superhydrophobicity, must have low surface energy. The second factor is the geometrical structure of the surface.