Seminar - Nanogenerator for Electric Clothing, Liwei Lin, Tue 5/4 4-5pm 101X

Nanogenerator for Electric Clothing
Prof. Liwei Lin

Dept. of Mechanical Engineering, UC Berkeley

Tuesday, May 4, 4:00-5:00
Allen 101X Auditorium

Abstract:
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 technologies. Mechanical energy
scavengers by orderly electrospun piezoelectric nanofibers enable energy
generation which could eventually lead to "electric clothing." This talk
will introduce recent results on the demonstration of a single
nanogenerator made of polyvinylidene fluoride (PVDF) via the in-situ
stretching and poling electrospinning process. Results show that energy
conversion efficiency of nanogenerator could be 10 times higher than
large scale structures made of the same material. The capability of
demonstrating electrospun nanofiber as possible power generator could
have a profound impact in various application areas, including energy
harvesting, strain sensing, and actuation sources.
Bio:
Professor Liwei Lin received his Ph.D. degree from the University of
California, Berkeley, in 1993 and is now Chancellor's Professor at the
Mechanical Engineering Department and Co-Director at Berkeley Sensor and
Actuator Center, an NSF/Industry/University research cooperative center.
He served as the Vice-Chair for graduate study for the Mechanical
Engineering department from 2006~2009. His research interests are in
design, modeling and fabrication of micro/nano structures, sensors and
actuators as well as mechanical issues in micro/nano systems including
heat transfer, solid/fluid mechanics and dynamics. Dr. Lin is the
recipient of the 1998 NSF CAREER Award for research in MEMS Packaging
and the 1999 ASME Journal of Heat Transfer best paper award for his work
on micro scale bubble formation. He led the effort in establishing the
MEMS sub-division in ASME and served as the founding Chair of the
executive committee for the MEMS division in ASME. He holds 13 U.S.
patents in the area of MEMS and NEMS.