New plastics can self heal

It sounds like the stuff of Harry Potter – in which the wizard has his cracked spectacles fixed with a flash of light from a magic wand – but scientists have found that they can indeed fix cracks in materials with a flash of light. Laser light, of course.

Researchers have created a polymer that mends itself when hit with a bright beam of UV light. The new self-healing plastic could find its way into coatings for automobiles, mobile phone screens and other everyday devices, making scratches and other minor dings vanish as if they were never there. Read more here, here or here.

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