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University of Michigan has developed a coating that repeals virtually any liquid


CharlieEckert

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Engineering researchers at the University of Michigan have crated a nanoscale coating that is super effective at repelling liquids. The major difference between this coating and other coating is that with other coatings, liquids with very low surface tensions such as oils, alcohols, and organic acids stick to the coating and eventually diffuse through the coating; however with this coating, even liquids with low surface tensions are repelled. After testing well over a 100 liquids, the team at Michigan University found only two liquids capable of penetrating the coating which were chlorofluorocarbons. The coating consists of between 95 to 99 % air pockets. This prevents the liquids from coming close to the solid surface thus reducing the intermolecular forces that would attract the liquid to the solid. The liquid droplets failing to interact with the solid retain a spherical shape and bounce right off the coating.

http://www.ns.umich.edu/new/multimedia/videos/21099-a-material-that-most-liquids-won-t-wet

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