Bioplastic self-heals using water

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The ability to self-heal is common in the natural world but tricky to engineer. This is especially true when a material is wet — for example inside a human body for replacement surgery. Scientists at Penn State University however, have found a source of inspiration from squid ring teeth. Professor Melik Demirel and colleagues were looking for a substance that was both strong and plastic enough to self-heal in water. Squid ring teeth were identified as showing all the necessary characteristics: they are robust, plastic and capable of self-healing even in water. The team cast the material into small, dog-bone…

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