Natural Superhydrophobic Surfaces and Application

Superhydrophobicity refers to the phenomenon that the contact angle of various low surface tension water droplets on the solid surface is greater than 150°. Over the past few years, people have paid more attentions in the superhydrophobic surfaces’ design and application. The superhydrophobic surfaces are meaningful for basic research and various practical applications, such as self-cleaning, drag reduction, lubrication, and more. This paper summarizes the recent advances and developments in superhydrophobic surfaces systematically. Furthermore, in this work, the authors focus on the basic concepts of superhydrophobic surfaces and commonly used synthetic methods. Electrodeposition and electrospinning methods are mainly introduced. Finally, we also discuss the limitations and challenges encountered in the study of superhydrophobicity, mainly with regard to the fact that drag should be reduced to improve energy harvesting efficiency.