Reflective glass goes clear – just add methyl salicylate

Reflective glass goes clear – just add methyl salicylate

The glass in its retroreflective state (left), and its clear state (right) Imagine if your car’s windshield glass could turn from being clear to reflective, when the car was parked in the hot sun. Or perhaps if there were rooftop panels that reflected unwanted solar heat in the summer, but turned clear to let it in, in the winter. Well, such things may soon be possible, thanks to a new liquid-activated "smart glass" being developed at the University of Delaware. The glass consists of a sheet of 3D-printed plastic, over top of which is a regular sheet of clear […]

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