Self‐Powered Electronic Skin with Multisensory Functions Based on Thermoelectric Conversion

Abstract Wearable electronics for personal healthcare and environment awareness are attracting more and more attention, where continuous energy supply is requisite and still faces great challenge. Here, a self‐powered electronic skin (e‐skin) system with multiple sensations as well as data processing and data visualization is developed. The core component is a hand‐shaped flexible thermoelectric generator functionalized as e‐skin, which not only harvests energy from body heat to supply power for the entire e‐skin system, but also plays a role of multisensory receptor. The e‐skin system is endowed with multifunction of sensing temperature and humidity, perceiving wind and motion, identifying material and monitoring acceleration, as well as displaying the sensing data on a liquid crystal display, all of which are powered by human body heat. The self‐powered flexible e‐skin provides an advantageous approach for applications in repair of skin injury, wearable healthcare devices, and wearable robots.