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Tunable plasmonic metasurface for perfect absorption

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Title: Tunable plasmonic metasurface for perfect absorption
Authors: Arroyo-Huidobro, P
Maier, SA
Item Type: Journal Article
Abstract: Tunable metasurfaces, whose functionality can be dynamically modified, open up the possibil- ity of ultra-compact photonic components with reconfigurable applications. Here we consider a graphene monolayer subject to a spatially periodic gate bias, which, thank to surface plasmons in the graphene, acts as a tunable and extremely compact metasurface for terahertz radiation. After characterizing its functionality, we show that it serves as the basic building block of an ultrathin complete absorber. In this subwavelength-thickness device, transmission and reflection channels are blocked and electromagnetic energy is completely absorbed by the metasurface building blocks. The proposed structure can be used as a modulator, and its frequency of operation can be changed by scaling its size or adjusting the doping level.
Issue Date: 17-Feb-2017
Date of Acceptance: 13-Jan-2017
URI: http://hdl.handle.net/10044/1/43984
DOI: https://dx.doi.org/10.1051/epjam/2017001
ISSN: 2272-2394
Publisher: EDP Sciences
Journal / Book Title: EPJ Applied Metamaterials
Volume: 4
Copyright Statement: © P.A. Huidobro et al., published by EDP Sciences, 2017. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Sponsor/Funder: The Leverhulme Trust
Gordon and Betty Moore Foundation
Engineering & Physical Science Research Council (EPSRC)
Funder's Grant Number: F/07 058/BK
Publication Status: Published
Article Number: 6
Appears in Collections:Condensed Matter Theory
Experimental Solid State
Faculty of Natural Sciences