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, and Anatoly V. Zayats
Phys. Rev. B 91, 125426 – Published 19 March 2015

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.

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  • Received 6 June 2014
  • Revised 30 December 2014

DOI:https://doi.org/10.1103/PhysRevB.91.125426

©2015 American Physical Society

Authors & Affiliations

Alexander S. Shalin1,2,3,*, Pavel Ginzburg4,†, Alexey A. Orlov1, Ivan Iorsh1, Pavel A. Belov1, Yuri S. Kivshar1,5, and Anatoly V. Zayats4

  • 1ITMO University, St. Petersburg 197101, Russia
  • 2Kotel'nikov Institute of Radio Engineering and Electronics of RAS (Ulyanovsk branch), Ulyanovsk 432011, Russia
  • 3Ulyanovsk State University, Ulyanovsk 432017, Russia
  • 4Department of Physics, King's College London, Strand, London WC2R 2LS, United Kingdom
  • 5Nonlinear Physics Center and Center for Ultra-high Bandwidth Devices for Optics Systems (CUDOS), Australian National University, Canberra ACT 0200, Australia

  • *Corresponding author: shalin_a@rambler.ru
  • pavel.ginzburg@kcl.ac.uk

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Vol. 91, Iss. 12 — 15 March 2015

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