Someday, a way to 'see' nuclear, chemical threats
Thursday, April 1, 2010 - 17:07
in Physics & Chemistry
Ordinarily, the small square of plastic and glass has a reddish color. But when Drexel University graduate student Sameet Shriyan flicks a switch, applying a bit of electricity, suddenly the red fades and the material becomes clear enough to see through. The square is essentially a mirror that reflects red light, but can be turned on and off.