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Now engineers have found a quirky new use for superhydrophobic materials – making "unsinkable" metals that stay floating even when punctured.
Superhydrophobic materials get their water-repelling properties by trapping air in complex surfaces. These air bubbles make it hard for water to stick, so droplets instead bounce or roll right off. But, of course, air also makes things buoyant, so the team set out to test how superhydrophobic materials could be used to make objects that float better.