The risky work usually has to be done by hand with powerful chemicals, but that all could change thanks to a machine called Purple Sun which uses ultraviolet light to kill germs. "In 90 seconds ...

New GM patent uses ultraviolet LED emitters and a photocatalytic coating to clean and disinfect touch screens.

UV light has become prominent in the new normal, especially since it is said to effectively kill viruses and bacteria. But UV light disinfection is complicated and carries with it certain dangers. In ...

Highlighter pens contain chemicals that absorb visible light as well as ultraviolet (UV) light, which humans cannot see. The UV light “excites” the electrons in the ink’s molecules and ...

Colour-changing stickers and hair dye that react to ultraviolet light could help people gauge ... stickers that change colour from purple to light pink throughout the day to indicate cumulative ...

Researchers have succeeded in producing a coating material that can be written on using UV light and the writing ... freehand writing using a laser pen. Both options gave a high-contrast pattern ...