Invisibility cloaks go optical

Published in Physics World, 28 Apr 2009

Two independent groups of physicists claim to have demonstrated invisibility cloaks that operate for light at optical wavelengths.

Until now researchers had only been able to create invisibility cloaks for the microwave part of the spectrum. But last week Michal Lipson and colleagues at Cornell University uploaded a preprint on arXiv in which they describe the first demonstration of a cloak that can disguise objects from light in the near infrared to the far red. The following day Xiang Zhang and colleagues at the University of California at Berkeley uploaded a preprint in which they describe a cloak for just the near infrared.

Although Lipson’s group has submitted its preprint to Nature Photonics and is awaiting peer review, the work of Zhang’s group will soon be published in Nature Materials. […]

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