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The Purdue University engineers, following mathematical guidelines devised in 2006 by physicists in the United Kingdom, have created a theoretical design that uses an array of tiny needles radiating outward from a central spoke. The design, which resembles a round hairbrush, would bend light around the object being cloaked. Background objects would be visible but not the object surrounded by the cylindrical array of nano-needles, said Vladimir Shalaev, Purdue's Robert and Anne Burnett Professor of Electrical and Computer Engineering.
The design does, however, have a major limitation: It works only for any single wavelength, and not for the entire frequency range of the visible spectrum, Shalaev said.
Originally posted by sardion2000
Another step forward in the quest for full Optical Cloaks. You knew it had to come sooner or later. I want to see what other wavelengths can be cloaked with technology such as this. Imagine covering spacecraft with a metamaterial hull that cloaks the craft from all harmful radiation, eliminating the need for massive and expensive shielding.
Originally posted by porky1981
umm, gamma radiation interacts with material, regardless of what the material is made from and the reaction occurs with the electrons. I don't think this would have any affect on gamma radiation.