Superhydrophobic materials have extensive application prospects in our daily life and industrial fields due to their unique self-cleaning characteristic. At present, the diversity of superhydrophobic materials properties has attracted more attention in basic research and practical application with the maturity on the research of single functional superhydrophobic materials, such as transparency, wear durability and wettability conversion, etc. Transparent superhydrophobic coatings possess good transparency, besides the general performance of the superhydrophobic coatings; enhance the wear resistance of superhydrophobic materials has a very important significance in practical application; and the wettability conversion can extend the application of superhydrophobic surfaces in oil-water separation and other aspects. The research of superhydrophobic materials is plentiful, but it still can not meet the demand for superhydrophobic surface functionality. Therefore, it's always worth researching on the superhydrophobic coating with functionalization. Herein, we review the research progress of the transparency, wear durability, wettability switch, separation of mixture and other aspects on superhydrophobic materials. The future research focus and development direction about superhydrophobic materials fields are pointed out.

Contents
1 Introduction
2 Transparent superhydrophobic surfaces
2.1 The research of transparent superhydrophobic materials
2.2 Control for the transparence of superhydrophobic surface
3 Wear resistance and durability of superhydrophobic surfaces
3.1 Test methods for wear resistance and durability of superhydrophobic surface
3.2 The way to improve the wear resistance and durability of superhydrophobic surface
4 Separation of mixture
4.1 Oil-water separation
4.2 Membrane distilation
4.3 Drug release
5 Wettability transformation of superhydrophobic surfaces
5.1 Single factor stimuli-responsive surfaces
5.2 Multifactors responsive switchable surfaces
6 Research of other functional superhydrophobic surfaces
7 Existing problems
8 Outlook