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Metamaterial 'Skin Cloak' Makes Microscale Object Invisible

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An ultrathin metasurface that has been used to hide microscopic objects could be scaled up to provide visible-light cloaking of macroscale objects, according to its developers at the University of California. The researchers fashioned a "skin cloak" about 80 nm thick consisting of brick-like blocks of gold nanoantennas that redirect light. 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 Xiang Zhang, a professor at UC Berkeley and director of...Read full article

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    Published: September 2015
    Glossary
    nano
    An SI prefix meaning one billionth (10-9). Nano can also be used to indicate the study of atoms, molecules and other structures and particles on the nanometer scale. Nano-optics (also referred to as nanophotonics), for example, is the study of how light and light-matter interactions behave on the nanometer scale. See nanophotonics.
    mirrorsPrismsResearch & TechnologyAmericasCaliforniaBerkeleyXiang ZhangOpticscloakingnanometamaterialsZi Jing WongXingjie NiTech Pulse

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