Rapid Interfacial Reconfiguration Via Microwave Air Plasma Enables Durable Superamphiphobic Coatings

This is the authors' abstract. We don't add key points for this paper.

The structural and chemical instability of liquid‐repellent coatings remains a major limitation to durable surface protection under harsh conditions. Here, an atmospheric‐pressure microwave air plasma (MAP)‐induced interfacial reconstruction strategy is reported, converting a PFDTES‐modified SiO 2 /epoxy precursor layer into a consolidated hierarchical superamphiphobic interface within 60 s. MAP induces controlled matrix etching to expose and reorganize the fluorosilane‐modified SiO 2 framework, thereby coupling hierarchical roughness, fluorinated surface chemistry, and structural stabilization. The resulting coating exhibits water and oil contact angles of 168° and 155°, respectively, and repels diverse solutions, suspensions, and emulsions. It retains superhydrophobicity after thermal treatment at 500°C and resists sandpaper abrasion, tape peeling, water‐jet impact, sand impact, 1440 h of UV exposure, and 240 h of chemical immersion. It also delays droplet freezing and facilitates the removal of nanoscale powders and liquid stains. This work establishes MAP‐induced interfacial reconfiguration as a rapid route toward durable multifunctional liquid‐repellent coatings.