An anticounterfeiting and tampering prevention system using ultraviolet and visible light has been recently proposed. This technology was developed using the metasurface, capable of freely controlling ...

Ultraviolet (UV) light has higher energy photons than visible light and, thus, has more applications. Researchers have now developed a brilliant innovation -- a solid-state material that can stably ...

A series of coated lenses can allow people to see ultraviolet light superimposed onto the visible spectrum, extending the range of our senses without the need of electronic devices. UV imaging can be ...