A huge number of models of wearable electronicsgreatly simplifies the life and work of a modern person. However, all gadgets require regular replenishment of energy. Engineers from the University of Colorado Boulder (USA) have developed a wrist ring system that provides electricity for wearable electronics directly from the user using thermoelectric generators (TEG). These devices are capable of directly converting the thermal energy of the human body into electricity.
Thus, the idea of the authors is partially realized."Matrices" when a person became a battery for cars. However, in reality, wearable gadgets, as well as devices of the "Internet of Things", are able to receive only a small part of the energy of the human body - about 1 V per square cm at a temperature difference of 95 K. The TEG developed in Colorado additionally has a film built on the cold side to increase performance when the gadget is in the sun. This feature allows you to improve the charging efficiency during active sports and outdoor activities.
The generator ring is based onan elastic polyimine material as a substrate and sheath for liquid metal electrical wiring connecting embedded modular thermoelectric chips. This TEG has excellent mechanical flexibility, so it can be worn on the human body to collect energy.
Study and optimization of properties and conceptsColorado-based TEG designs could ultimately lead to high-performance, adaptable, customizable, durable, cost-effective and environmentally friendly devices designed to generate next-generation power with a wide range of uses.