Nanogenerators harvest body’s energy to power devices
No need to plug in wearable or implantable gadgets that can perform medical tasks
![triboelectric nanogenerator w/voltage graph](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2015/09/090115_bm_nanongenerator_main_free.jpg?fit=860%2C460&ssl=1)
POWER SQUEEZE With a squeeze, swing or jiggle, body motion can flex a triboelectric nanogenerator (left) to create voltage (right), which can charge implantable and wearable medical devices. Textured surfaces within the generator can boost the power output.
W. Tang et al/ACS Nano 2015