Chinese researchers have developed a device that can harvest energy from its wearer's knee and generate 1.6microwatts of power while the wearer walks at a normal speed without any increase in effort.
The study published in the latest edition of Applied Physics Letters described the device that can power gadgets like health monitoring equipment and GPS devices.
A group of researchers from the Chinese University of Hong Kong used a smart macro-fibre material, generating energy from any sort of bending to create a mechanism similar to the slider-crank used to drive a motor.
Every time the knee flexes, the device bends and captures the biomechanical energy.
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