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A slippery interface, based on the synergistic relationship between structural topologies and functional liquids found in living organisms, exhibits controlled interactions with viscous fluids and solid materials owing to its low adhesion properties. However, creating a porous surface to be infilled with lubricants or using gelation methods typically requires long process times, and scaling up to large areas presents significant challenges. In this study, we developed a simple fabrication method, composed of two main steps, for creating a slippery interface. First, an organogel was fabricated by exposing a mixture of a photocurable polydimethylsiloxane resin and lubricant to ultraviolet (UV) light, following a roll-to-plate process. Subsequently, the organogel surface was coated with a lubricant and subjected to a UV-grafting process to enhance its slippery properties. The low sliding angles of the resulting slippery organogel for various viscous fluids and its performance in antifouling and anti-icing tests indicated its low adhesion to liquids, solids, and biological deposits. This approach is simpler than conventional methods and is suitable for scaling up of slippery organogels that can be used to develop large-area slippery surfaces using photo-induced processes.

Artificial liquid-repellent surfaces inspired by biomimetic structures provide a wide range of functional surfaces for various practical applications, such as self-cleaning, antisticking, oil/water separation, and droplet manipulation. However, functional biomimetic structures cannot be fabricated using conventional techniques. For example, mushroom-like topologies on the skin of springtails, which are referred to as “doubly reentrant structures,” have attracted significant attention owing to their extraordinary liquid-repellent properties. Current methods of fabricating these reentrant structures have several limitations, such as complex material systems, processing steps, and additional chemical treatments. This study proposed a simple micro-shape-deformed approach to fabricate mushroom-like reentrant structures by digital light processing, a three-dimensional (3D) printing technique, with volumetric shrinkage. The nonuniform cross-linking process and light propagation during photopolymerization caused the deformation of the topological patterns atop the micropillar arrays, resulting in bent structures for mushroom-like shape-deformed microarchitectures. This 3D-printed shape-deformed microstructure exhibits a highly stable liquid repellency without perfluorinated coatings.