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.
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