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Optical Scattering Cancellation through Arrays of Plasmonic Nanoparticles: A Review

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Niccolò Cusano University, Via Don Carlo Gnocchi 3, Rome 00166, Italy
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Department of Electrical and Computer Engineering, The University of Texas at Austin, Austin, TX 78712, USA
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Department of Engineering, "Roma Tre" University, Via Vito Volterra 62, Rome 00154, Italy
*
Author to whom correspondence should be addressed.
Photonics 2015, 2(2), 540-552; https://doi.org/10.3390/photonics2020540
Received: 14 April 2015 / Revised: 12 May 2015 / Accepted: 12 May 2015 / Published: 18 May 2015
(This article belongs to the Special Issue New Frontiers in Plasmonics and Metamaterials)
In this contribution, we review and discuss our recent results on the design of optical scattering cancellation devices based on an array of plasmonic nanoparticles. Starting from two different analytical models available to describe its electromagnetic behavior, we show that a properly designed array of plasmonic nanoparticles behaves both as an epsilon-near-zero metamaterial and as a reactive metasurface and, therefore, can be successfully used to reduce the optical scattering of a subwavelength object. Three different typologies of nanoparticle arrays are analyzed: spherical, core-shell, and ellipsoidal nanoparticles. We prove, both theoretically and through full-wave simulations, that such nanostructures can be successfully used as a cloaking device at ultraviolet and optical frequencies. View Full-Text
Keywords: optical mantle cloaking; scattering cancellation; optical metasurfaces optical mantle cloaking; scattering cancellation; optical metasurfaces
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Monti, A.; Alù, A.; Toscano, A.; Bilotti, F. Optical Scattering Cancellation through Arrays of Plasmonic Nanoparticles: A Review. Photonics 2015, 2, 540-552.

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