piezoelectricity

Flexible materials that discharge electricity when they change their shape after being subject to kinetic pressure and vibration is known as piezoelectrics, which are divided into unwieldy ceramics that generate moderate levels of energy to flexible polymers that generate very little.

Researchers would like to place very small implants deep inside our bodies to monitor health or treat pain. But providing electric power to implants without wires or batteries has been a big obstacle.