Oil-immersion stable superamphiphobic coatings for long-term super liquid-repellency

Superamphiphobic coatings have attracted tremendous interest from both academia and industry owing to their potential for self-cleaning and anti-fouling.However, many state-of-the-art superamphiphobic coatings are unable to preserve their super-repellent properties after prolonged liquid immersion.Thus, practical applications have so far been drastically limited.Herein, we highlight the immersionstable performance of a nanostructurally-densified superamphiphobic coating possessing super liquid repellency to water and various low-surface-tension liquids.They exhibit excellent superoleophobic properties and functional stability even after prolonged immersion in mixed synthetic and vegetable oils.This immersion-stable superamphiphobic coating was also tested on household kitchen appliances under realworld conditions.Particularly inaccessible components such as the impeller and grease traps of range hoods were coated.Impellers demonstrate an improvement of up to 65% contamination-resistance while grease traps remained largely dry after collected oils were disposed.These findings highlight the potential of using nanostructurallydensified superampiphobic coatings as anti-fouling surfaces in the kitchen environment, with potential applications in petroleum extraction and oil transportation.