時間：97年11月11日（二）13：30～15：20
地點：交通大學光復校區工程五館
主講者：Dr. Ming C. Wu (吳明強博士), Co-Director of BSAC, UC Berkeley
講題：Optofluidics and Optoelectronic Tweezers
摘要：
Optoelectronic tweezers (OET) is a new optical manipulation
technique developed recently at UC Berkeley. Based on
light-induced dielectrophoresis, OET can trap and sort colloidal
particles and biological cells. It requires 100,000 times less optical
power than conventional laser tweezers. As a result, we can use
digital light projects to form massively parallel dynamic traps. As
many as 31,000 individually addressable traps have been generated
over an area of ~ 1 mm x 1 mm. Recently, we have succeeded in
trapping semiconductor and metallic nanowires (~ 100 nm diameter,
a few micron in length) and gold nanoparticles (90 nm diameter).
Once trapped, we can use the same optical beam to excite and
measure the Raman spectra of the trapped nanoparticles. Potentially,
we can also use trapped nanowire as a SERS probe for in situ Raman
characterization. Dynamic manipulation and sorting of biological
cells using phototransistor-based OET will also be discussed.
吳明強博士簡歷：
Ming C. Wu is Professor of Electrical Engineering and Computer
Sciences, and Co-Director of Berkeley Sensor and Actuator Center
(BSAC) at the University of California, Berkeley. He is also Chief
Scientist of CITRIS, and Director of Berkeley Microfabrication
Laboratory. Dr. Wu received his B.S. degree in Electrical Engineering
from National Taiwan University, and M.S. and Ph.D. degrees in
Electrical Engineering and Computer Sciences from the University of
California, Berkeley in 1985 and 1988, respectively. From 1988 to 1992,
he was a Member of Technical Staff at AT&T Bell Laboratories, Murray
Hill, New Jersey. From 1992 to 2004, he was a professor in the
Electrical Engineering department at the University of California, Los
Angeles (UCLA). He has been a faculty member at Berkeley since 2004.
His research interests include MEMS (micro-electro-mechanical
systems), MOEMS, semiconductor optoelectronics, nanophotonics, and
biophotonics. He has published 7 book chapters, over 155 journal papers
and 300 conference papers. He is the holder of 19 U.S. patents. Prof. Wu
is a Fellow of IEEE, and a member of Optical Society of America. He
was a Packard Foundation Fellow from 1992 to 1997. He received the
2007 Paul F. Forman Engineering Excellence Award from Optical
Society of America.
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