Scattering suppression from arbitrary objects in spatially dispersive layered metamaterials

Alexander S. Shalin*, Pavel Ginzburg, Alexey A. Orlov, Ivan Iorsh, Pavel A. Belov, Yuri S. Kivshar, Anatoly V. Zayats

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    47 Citations (Scopus)

    Abstract

    Concealing objects by making them invisible to an external electromagnetic probe is coined by the term "cloaking." Cloaking devices, having numerous potential applications, are still facing challenges in realization, especially in the visible spectral range. In particular, inherent losses and extreme parameters of metamaterials required for the cloak implementation are the limiting factors. Here, we numerically demonstrate nearly perfect suppression of scattering from arbitrary-shaped objects in spatially dispersive metamaterial acting as an alignment-free concealing cover. We consider a realization of a metamaterial as a metal-dielectric multilayer and demonstrate suppression of scattering from an arbitrary object in forward and backward directions with perfectly preserved wave fronts and less than 10% absolute intensity change, despite spatial dispersion effects present in the composite metamaterial. Beyond the usual scattering suppression applications, the proposed configuration may be used for a simple realization of scattering-free detectors and sensors.

    Original languageEnglish
    Article number125426
    JournalPhysical Review B - Condensed Matter and Materials Physics
    Volume91
    Issue number12
    DOIs
    Publication statusPublished - 19 Mar 2015

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