Published in Physics World, 16 Nov 2010
Physicists in the UK have proposed a “space–time” invisibility cloak that, if built, could be used to prevent signal interference or give the illusion of a Star Trek teleportation device.
The idea comes after four years of research by different groups that are creating devices to make objects invisible. In 2006 researchers at Duke University in the US created the first device that could cloak a small object in two dimensions in the microwave region of the electromagnetic spectrum. Last year groups at Cornell University and the University of California at Berkeley, US, independently created 2D cloaks that operated at optical wavelengths. Then, earlier this year, a team at the Karlsruhe Institute of Technology in Germany went one step further to produce a 3D optical cloak. […]
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