A new theoretical design using nanowires provides a way to hide devices from visible light.A hairbrush-shaped device has been theoretically designed that would use bristles made out of nanowires to bend light around it, rendering the object invisible. The researchers who came up with the design say that it's the first practical design for an "optical cloak" to work in the visible spectrum. They are now working on building an actual device based on their calculations.
Although still only a theoretical design, it is the first to show how a recently discovered cloaking effect could be made to work for all wavelengths of visible light, says Vladimir Shalaev, a professor of electrical and computer engineering at Purdue University, in West Lafayette, IN, who led the research effort.
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