Tunable Window Switches from Clear to Opaque in Seconds

A new sort of tunable window can transform from clear to opaque or a range in between with just a flick of a switch which is operated by electric current. The transformation takes less than a second, and the amount of opacity can be controlled by the level of voltage applied.

<a href=”http://www.seas.harvard.edu/news/2016/03/tunable-windows-for-privacy-camouflage/”>http://www.seas.harvard.edu/news/2016/03/tunable-windows-for-privacy-camouflage/</a>