Tag Archives: piezoelectricity

Nano-generators can harvest electricity from your blood

from io9:

New nano-generators can turn mechanical energy – like that of flowing blood – into electricity needed to power nanobots.

The tiny generators are the brainchild of Dr. Yong Shi, a professor in the Mechanical Engineering Department at Stevens Institute of Technology. They make use of a technology known as piezoelectric nanofibers, which are minuscule wires that are able to harness nearby mechanical energy (basically the energy of motion) and turn it into electrical energy. Each wire measures half a millimeter long and just 60 billionths of a meter in diameter.

Self-powered nanotechnology closer to reality

from MIT’s Technology Review:

[...] Wang has been developing devices based on nanowires that exhibit piezoelectricity. That is, they generate a voltage when they’re bent.

He has been integrating these nanowires into devices that can harvest energy from biomechanical motion–including the running movements of a hamster on a wheel or the tapping of a finger–and use it to power a small sensor.