Hierarchical micro/nano structures for super-hydrophobic surfaces and super-lyophobic surface against liquid metal

Abstract

Non-wetting super-hydrophobic or super-lyophobic surfaces are of great interest in a variety of applications. Natural water repelling surfaces show micro-/nano- combined hierarchical structure which shows extremely low wettability and self-cleaning characteristics. Inspired by such natural wonders, there have been tremendous efforts to create artificial non-wetting super-hydrophobic or super-lyophobic surfaces. In this paper, recent progress in artificial super-hydrophobic surfaces based on hierarchical micro-/nano- dual-scale structure is reviewed. In addition, application of hierarchical micro-/nano- dual-scale structure as super-lyophobic surfaces against gallium-based liquid metal alloy is also reviewed.