Asia Symposium & Research Review 2012
November 13-14

Liwei Lin


Energy Harvesting

A self-powering system that harvests its operating energy directly from the environment/body movement is an attractive proposition for sensing, personal electronics and security applications. This talk will focus on energy harvesting from (1) nanofibers of single and arrayed nanogenerators made of polyvinylidene fluoride (PVDF) via the in-situ stretching and poling process by means of electrospinning; and (2) microstructures of microgenerators made of aluminum nitride (AlN) via micro machining process. Results show that energy conversion efficiency of nanogenerator could be 10 times higher than large scale structures made of the same material and more efficient energy conversion for the AlN microgenerators by improved structural designs.