Invisibility Cloak With Photonic Crystals

Almost as elusive as unicorns, finding practical materials for invisibility cloaking is challenging. Michigan Technological University researchers have new ideas how to solve that. Metamaterials made from metal elements initially proposed for constructing invisibility cloaks, did not solve some important cloaking problems. There are three challenges remaining. The first is controlling anisotropy—the variable behavior of […]

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