Fecha de publicación: 01/12/2022 Fuente: Wipo "olive oil" The present invention provides liquid repellent slippery surfaces and methods or preparing the same. The surface comprises a substrate, the substrate surface being functionalised via the deposition of a polymer layer thereon, and a lubricant impregnated into the polymer layer, thereby forming said liquid repellent slippery surface. The polymer layer comprises an aromatic ring-containing polymer layer; and the lubricant is an aliphatic compound, rapeseed oil, olive oil, vacuum pump oil, cinnamaldehyde a cinnamaldehyde derivative, essential oil or an essential oil-derived compound. The present invention also provides a liquid repellent slippery surface, wherein the surface comprises a substrate and associated substrate surface, the substrate surface functionalised via the deposition of a polymer layer thereon. The polymer layer is formed from a functional monomer precursor comprising a siloxane-group containing monomer or an alkyl-group containing monomer.