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A 3D tunable and multi-frequency graphene plasmonic cloak

Farhat, M.; Rockstuhl, C.; Baci, H.

We demonstrate the possibility of cloaking three-dimensional objects at multi-frequencies in the far-infrared part of the spectrum. The proposed cloaking mechanism exploits graphene layers wrapped around the object to be concealed. Graphene layers are doped via a variable external voltage difference permitting continuous tuning of the cloaking frequencies. Particularly, two configurations are investigated: (i) Only one graphene layer is used to suppress the scattering from a dielectric sphere. (ii) Several of these layers biased at different gate voltages are used to achieve a multifrequency cloak. These frequencies can be set independently. The proposed cloak’s functionality is verified by near- and far-field computations. By considering geometry and material parameters that are realizable by practical experiments, we contribute to the development of graphene based plasmonic applications that may find use in disruptive photonic technologies.

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Verlagsausgabe §
DOI: 10.5445/IR/1000040541
Veröffentlicht am 09.05.2018
DOI: 10.1364/OE.21.012592
Zitationen: 58
Web of Science
Zitationen: 53
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Theoretische Festkörperphysik (TFP)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2013
Sprache Englisch
Identifikator ISSN: 1094-4087
KITopen-ID: 1000040541
Erschienen in Optics express
Band 21
Heft 10
Seiten 12592-12603
Schlagwörter Invisibility cloaks, Metamaterials, Subwavelength structures
Nachgewiesen in Web of Science
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