More than one-fifth of US electricity is used to power ... a high concentration of holes (p-type GaN doped with Mg). Until recently, the only high-luminosity LEDs available emitted red light.

Glenicia Nosworthy explains how to choose the right high-tech ... days when the red light therapy devices were seen as pricey futuristic treatments — some of the best at-home LED face masks ...

Sony announced today a new display system featuring an independent drive RGB LED with a high-density backlight. This setup ...