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Zhen Ye
Professor of Physics
National Central University, Taiwan, China
The Phenomenon of Acoustic Localization
Abstract
Wave localization is a ubiquitous phenomenon. It refers to situations in
which transmitted waves in a scattering medium are trapped in space and will
remain confined in the neighborhood of the initial site until dissipated.
The concept of localization was conceived from the theory describing the
disorder induced conductor-insulator transition in electronic systems by the
Nobel laureate P. W. Anderson. Since its inception, wave localization has
stimulated considerable interest among scientists from many areas of
disciplinary. Despite the efforts, however, the realization of localization
remains an open issue, particularly with regards to the situation in two
dimensions. Here we will discuss some fundamental questions pertinent to
localization, exemplified by acoustic systems. Some existing problems in the
current research will be addressed. A new method discerning the effect of
localization will be presented.
Biosketch
After obtaining B.Sc. in biology from Peking University in 1984, Zhen Ye
passed the graduate entrance exams to enroll in the M.Sc. program in the
Department of Physics, Fudan University, Shanghai, China. Soon he came to
Canada to continue his graduate studies in the Department of Physics,
University of Alberta. There he was supervised by the late Killam Memorial
Professor of Science, Hiroomi Umezawa. He got his Ph. D. in theoretical
physics in 1991. Zhen Ye worked as a post doctoral fellow in the Department
of Physics, University of Ottawa, Canada from 1991 to 1992, where his
research area was in surface sciences. From 1993 to 1997, he worked first as
a research associate then as a research scientist in the Institute of Ocean
Sciences, Sidney, BC, Canada, where his research duties were underwater
acoustics, fisheries acoustics, and acoustical oceanography. Since 1997,
Zhen Ye is a Professor of Physics in National Central University, Taiwan,
China, and his research areas are acoustic wave propagation and scattering,
fluid dynamics, Anderson localization, photonic crystals, opto-electronic
devices, sonic crystals and devices.
Wednesday, January 14, 2004
Bourns Hall, Room A265
10:10 a.m.-11:00 a.m.
(Refreshments will be served at 10:00 a.m.) |
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