“Wearable Microgrid” Harvests Energy From Human Body to Power Electronic Gadgets

Wearable Microgrid Crop
The wearable microgrid uses energy from human sweat and movement to power an LCD wristwatch and electrochromic device. Credit: Lu Yin Nanoengineers at the University of California San Diego have developed a “wearable microgrid” that harvests and stores energy from the human body to power small electronics. It consists of three main parts: sweat-powered biofuel cells, motion-powered devices called triboelectric generators, and energy-storing supercapacitors. All parts are flexible, washable and can be screen printed onto clothing. The technology, reported in a paper published today (March 9, 2021) in Nature Communications, draws inspiration from community microgrids. “We’re applying the concept of the microgrid to create wearable systems that are powered sustainably, reliably and independently,” said co-first author Lu Yin, a...