Sanitizing Light: LEDs Become a Disinfectant Technology
A new use of light emitting diodes (LED) has emerged. LED light is killing bacteria, fungus and mold, and the scientific community has validated the results. Lab researchers, diode fabricators and fixture manufacturers are working to market LEDs that are an effective and safer disinfectant than ultraviolet (UV) light, while also offering a much longer operational life. This newfound application could be a game-changer.
A pioneer in researching visible light disinfection, the University of Strathclyde in Glasgow, Scotland, reported in 2008 it had discovered a proper blue-light wavelength of high-intensity visible light using LEDs that could deactivate methicillin-resistant Staphylococcus aureus (MRSA) and other strains of bacteria. Intensities of 400 to 420 nanometers (nm) did the trick, 405 being the sweet spot for bacteria deactivation. In 2012, LED work continued with blue light disinfecting other bacteria including listeria and E. coli. Then and now, the university licenses its patented LED technology. Other supportive domestic research over the last five years has included work by the Harvard Medical School in Boston and the Department of Defense Infectious Diseases Service at San Antonio Military
https://www.ecmag.com/section/lighting/sanitizing-light-leds-become-disinfectant-technology
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