Superhydrophobic Surface Based on Silicon Coating on Silicon-Based Electrospun Nano structures

In this study, the silicon-based nanostructures were prepared by using an electrospinning method and subsequent heat treatment process. The silane was coated on the surface of nanostructures make it superhydrophobic. Firstly, a precursor solution was prepared by dissolving an appropriate amount of Polyvinylpyrrolidone (PVP) and Tetraethylorthosilicate (TEOS) in ethanol and spun the nanostructures on the silicon wafer by using a single-syringe electrospinning. Secondly, the influence of heat treatment profile on morphology of electrospun nanostructures were explored in detail. Thirdly, silane dissolved in solution and coated on the nanostructures. This work studies the improvement of the superhydrophobic properties of the nanostructured surface through different high-temperature treatments. 600°C~800°C have different topography.