North Carolina State University researchers in the U.S. have invented a flexible body-heat powered energy harvester which can be used to make wearable technology that is powered by body heat alone. Earlier, there did exist energy harvesters that could generate energy from body heat but these were rigid structures, thus making them difficult to mould into parts. Now, the researchers have found a way to take small-sized units and join them together with low resistance joints, thus making up a flexible structure which can be worn on the body easily. They use a liquid metal non-toxic alloy composed of indium and gallium known as EGain. This has low resistance which makes for a high generation of energy from the heat absorbed.
