Superamphiphobic surfaces, capable of repelling both water and oil, have been extensively studied recently. Artificial superamphiphobic surfaces with ultralow solid/liquid adhesion and high transparency have been achieved separately. However, simultaneous demonstration of these two features remains a challenge. Here, we designed a superamphiphobic surface possessing a re-entrant curvature on both nano- and microscales uniformly, each maintaining their capabilities. The achieved micro/nano re-entrant-coordinated superamphiphobic surface performed ultralow solid/liquid adhesion for liquids with high viscosities or low surface tension and showed excellent transparency. This rationally designed model of the superamphiphobic surface may provide useful guidelines for fabrication of superamphiphobic surfaces and enable potential applications ranging from self-cleaning materials to optical devices, such as solar panels, wind screens, and goggles.
Keywords: micro re-entrant; nano re-entrant; superamphiphobic surface; transparency; ultralow adhesion.