Lock your gadget's keypad with a a single molecule-sized lock! Activate it by exposing it to the correct password, a sequence of chemicals and light. This newly developed device, scientists hope, could lead to a new level of safeguards for secret...
Tag - ultraviolet light
An 'optically switchable' material has been created by the Rensselaer Polytechnic Institute researchers. Magically, it can change a surface from its sticky nature to a slippery texture.
When exposed to ultraviolet (UV) light, the material alters its...
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