Simple Way to a Slippery Lubricant Impregnated Coating with Ultrastability and Self-Replenishment Property

Traditionally. slippery lubricant infused surfaces, inspired by Nepenthes, suffer from low durability, owing to the migrating, evaporating, and leaking of the infused lubricants. Herein, to address this challenge, a lubricant-impregnated coating with long-term stable slipperiness and self-replenishment properties is presented. By simple immersion in silicone oil, substrates coving with PDMS coating gain a slippery, long-lasting lubricated surface. The slippery coating repels water and corrosive liquids, resists ice and ketchup adhesion, and exhibits enhanced optical transparency. The resulting coating maintains its water repellency and slipperiness after mechanical bending, water jetting, tissue wiping, and knife scratching. The obtained slippery coating also repels hot liquids such as boiling water, and it also can be tolerant to thermal treatment at 125 °C for 1 d. More importantly, the slippery coating can self-lubricate upon lubricated liquid overlayer depletion through simple diffusion of the lubricant from the oil absorbed in the cross-linked PDMS network