Laser light alone can open, close world's fastest optical shutter without heating or cooling

It’s a rare case of all light and no heat: A new study reports that a laser can be used to switch a film of vanadium dioxide back and forth between reflective and transparent states without heating or cooling it.

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<p><a href="http://www.physorg.com/news116179254.html">Laser light alone can open, close world's fastest optical shutter without heating or cooling</a></p> <p>It’s a rare case of all light and no heat: A new study reports that a laser can be used to switch a film of vanadium dioxide back and forth between reflective and transparent states without heating or cooling it. </p>