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Posted by Jeff in Marketing

Piezo-photronic ZnO nanowire LEDs for future mobile devices

Materials Science Department researchers at the Georgia Institute of Technology recently announced in a Nature Photonics journal publication that they are using thousands of nanometer-scale wires for a sensor device that converts mechanical pressure from a signature or a fingerprint directly into a light signal, which can be processed optically. The goal is to enhance the sensitivity of the sensor device so that it is comparable to that of human skin and eventually incorporate these ZnO nanowire LEDs into future mobile devices. What’s more, the technique could also be used in biological imaging and micro-electromechanical (MEMS) systems, as the latter is booming amid the growth in mobile devices. Individual zinc oxide (ZnO) nanowires, that are part of the device, operate as tiny energy-efficient and energy-harvesting LEDs when undergoing strain from mechanical pressure, allowing the device to provide detailed information regarding pressure gradients. This technology is referred to as piezo-phototronics, which…