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Skin-inspired coating that’s as hard as teeth and can heal itself

Self-healing smart coatings could someday make scratches on cell phones a thing of the past. But researchers often have to compromise between strength and the ability to self-repair when developing these materials. Now, one group reports in ACS Nano the development of a smart coating that is as hard as tooth enamel on the outside but can heal itself like skin can.

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Engineers 3-D print shape-shifting smart gel

3D printing becomes 4D as objects morph over time and temperatures change. Rutgers engineers have invented a “4D printing” method for a smart gel that could lead to the development of “living” structures in human organs and tissues, soft robots and targeted drug delivery.

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