Purple light means go, ultraviolet light means stop
Sunday, August 1, 2010 - 06:21
in Physics & Chemistry
A new membrane developed at the University of Rochester's Laboratory for Laser Energetics blocks gas from flowing through it when one colour of light is shined on its surface, and permits gas to flow through when another colour of light is used. It is the first time that scientists have developed a membrane that can be controlled in this way by light...
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