Materials chemists tap body heat to power ‘smart garments’

Many wearable biosensors, data transmitters and similar tech advances for personalized health monitoring have now been ‘creatively miniaturized,’ says a materials chemist, but they require a lot of energy, and power sources can be bulky and heavy. Now researchers report that they have developed a fabric that can harvest body heat to power small wearable microelectronics such as activity trackers.