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19 April 2024 |
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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
; | | Date: |
Fri, 2 Jan 2015 12:37:36 GMT (1808kb) | | 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 face 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 wavefronts 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 serve as a simple realisation of scattering-free
detectors and sensors. | | Source: | arXiv, 1501.0392 | | Services: | Forum | Review | PDF | Favorites | |
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