European Coatings Journal - 17.11.2021 | Ana Viñuale | SLIPPERY COATINGS

NOTHING STICKS TO THESE SURFACES

Non-wetting surfaces can be achieved through different strategies, one of the most widely employed being hierarchical micro/nanotexturing, which was bioinspired by lotus leaves and leads to the formation of a stable air layer between the liquid and the solid, minimising their contact area and creating water contact angles greater than 150º [1]. However, although this well-known approach is highly effective at repelling water (offering super-hydrophobic properties), it presents limited oleophobicity, as it is not effective at repelling nonpolar liquids. In addition, it has limited robustness, fails under pressure or physical impact while not being self-repairable, and incurs high production costs ...
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