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DR. HUANYANG CHEN
The PhysOrg article
Invisibility undone: Chinese scientists demonstrate how to uncloak an
invisible object said
Harry Potter beware! A team of Chinese scientists has developed a way
to unmask your invisibility cloak. According to a new paper in the
latest issue of Optics Express, the Optical Society's (OSA) open-access
journal, certain materials underneath an invisibility cloak would allow
invisible objects be seen again.
"Cloaking is an important problem since invisibility can help survival
in hostile environment," says Huanyang Chen of Shanghai Jiao Tong
University in China. He and his colleagues have proposed a theoretical
"anti-cloak" that would partially cancel the effect of the invisibility
cloak, which is another important problem as it turns out.
If this sounds like more movie magic, it's no accident. From the 1933
classic
The Invisible Man to the more recent installment in the
Harry Potter series, devices that achieve invisibility have
long been
the
stuff of film fantasy. In recent years, however, scientists using
special types of "meta" materials have shown that these Hollywood
fantasies could one day become reality after all.
Huanyang Chen, B.Sc., Ph.D.
earned his B.Sc. and Ph.D. in physics from the Shanghai Jiao
Tong University in China. He was a co-winner of the "Top 10 Young
Talent"
at his home university in 2008. He is currently working as a
post-doctoral
fellow at the Hong Kong University of Science and
Technology.
He has published several interesting papers on transformation optics and
cloaking, including the anti-cloak, acoustic cloak, and rotation cloak.
His
main research interests include photonic band gaps, metamaterial design,
and transformation optics.
Huanyang coauthored
Reshape the perfect electrical conductor cylinder at will,
Superscatterer: Enhancement of scattering with complementary
media,
The Anti-Cloak,
Transformation media that turn a narrow slit into a large
window,
Electromagnetic wave manipulation using layered systems,
Time delays and energy transport velocities in three dimensional
ideal
cloaking,
On some constraints that limit the design of an invisibility
cloak,
Transformation media that rotate electromagnetic fields, and
Scattering of elastic waves by elastic spheres in a NaCl-type
phononic
crystal.
Read
"Cloak of silence" design is unveiled.
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