Advances in the durability of biomimetic superamphiphobic surfaces

Abstract

The preparation of biomimetic wettable surfaces usually relies on surface roughness and chemical modification. From the exploration of superhydrophobic surface structures to the discovery of re-entrant structures of superoleophobic surfaces, micro/nano structure design has gradually become the third important factor affecting wettable surfaces, and has gradually developed porous structures, overhanging structures, and composite hierarchical structures. Micro/nano structures give surfaces the ability to repel low surface energy liquids, but also affect surface durability. According to the damage form of the surface, durability improvement strategies such as adhesive enhancement, self-healing, and skeleton protection have been developed. This article discusses the development history of superamphiphobic surfaces, introduces the main structural types, summarizes methods to improve mechanical durability, and organizes commonly used durability testing methods.