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Letter
Nature Materials 8, 639–642 (1 August 2009) | doi:10.1038/nmat2489
An omnidirectional retroreflector based on the transmutation of dielectric singularities
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Abstract
Transformation optics is a concept used in some metamaterials to guide light on a predetermined path. In this approach, the materials implement coordinate transformations on electromagnetic waves to create the illusion that the waves are propagating through a virtual space.
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