Highly anisotropic power generation in piezoelectric hemispheres composed stretchable composite film for self-powered motion sensor

Highly-stretchable piezoelectric composite-type nanogenerators are fabricated as a self-powered, exceptionally ultrasensitive sensor for providing sensitive direction information from a human body. The composite films are based on the highly-ordered piezoelectric hemispheres embedded in a soft matrix, polydimethylsiloxane (PDMS) and generate large power output up to 6 V and 0.4 µA under normal bending force. The electrical outputs increase by stacking such hemispheres layer-by-layer.329