#From reel to real: Potter-style invisibility cloak a reality now WASHINGTON: Scientists have developed a Harry Potterstyle ultra-thin invisibility cloak that can conform to the shape of tiny objects and conceal them from detection with visible light. Although the cloak is microscopic, the principles behind the technology should enable it to be scaled-up to conceal macroscopic items as well, researchers said. Working with brick-like blocks of gold nanoantennas, the researchers fashioned a"skin cloak"barely 80 nanometres in thickness, wrapped around a 3d object about the size of a few biological cells and arbitrarily shaped with multiple bumps and dents. The cloak's surface was metaengineered to re-route reflected light waves to render the object invisible to optical detection when activated. The cloak can be turned on or off simply by switching the polarization of the nanoantennas.""This is the first time a 3d object of arbitrary shape has been cloaked from visible light, "said author Xiang Zhang, director of US department of energy's Berkeley l Laboratory material sciences division n
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