'Cloaking' a 3-D object from all angles demonstrated (BBC)
By Jason Palmer
Science and technology reporter, BBC News
Researchers have "cloaked" a three-dimensional object, making it invisible from all angles, for the first time.
However, the demonstration works only for waves in the microwave region of the electromagnetic spectrum.
It uses a shell of what are known as plasmonic materials; they present a "photo negative" of the object being cloaked, effectively cancelling it out.
The idea, outlined in New Journal of Physics, could find first application in high-resolution microscopes.
Most of the high-profile invisibility cloaking efforts have focused on the engineering of "metamaterials" - modifying materials to have properties that cannot be found in nature.
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more: http://www.bbc.co.uk/news/science-environment-16726609
http://iopscience.iop.org/1367-2630/14/1/013054
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