Researchers killed both viruses using UV-LED lights, which can alternate between white light and decontaminating ultraviolet (UV) light. Upon testing the viruses at different concentrations, they found samples with more viral particles were more resistant to the UV lights. Repeated exposure to UV light is key to catching those missed particles — fortunately, it’s as easy as flipping a switch. Escalator handrails could be continuously disinfected by putting UV lights in the underground part of the track, cleaning it with each rotation. With motion sensors, the lights automatically switch to UV light when a room is empty, then turn back to regular light with movement.

Source: The Guardian April 21, 2022 04:38 UTC