Singular Graphene Metasurfaces

File Description SizeFormat 
epjam180022.pdfPublished version1.23 MBAdobe PDFView/Open
Title: Singular Graphene Metasurfaces
Authors: Galiffi, E
Pendry, J
Arroyo Huidobro, P
Item Type: Journal Article
Abstract: The spatial tunability of the electron density in graphene enables the dynamic engineering of metasurfaces in the form of conductivity gratings, which can bridge the momentum gap between incident radiation and surface plasmons. Here, we discuss singular graphene metasurfaces, whose conductivity is strongly suppressed at the grating valleys. By analytically characterising their plasmonic response via transformation optics, we first review the physical principles underlying these structures, which were recently found to exhibit broadband, tunable THz absorption. We characterise the spectrum with different common substrates and then move to study in further detail how conductivity gratings may be finely tuned by placing an array of charged gold nanowires at sub-micron distance from the graphene.
Issue Date: 22-Feb-2019
Date of Acceptance: 11-Jan-2019
ISSN: 2272-2394
Publisher: EDP Open
Journal / Book Title: EPJ Applied Metamaterials
Volume: 6
Copyright Statement: © 2019 E. Galiffi et al., published by EDP Sciences. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Sponsor/Funder: Engineering & Physical Science Research Council (EPSRC)
Gordon and Betty Moore Foundation
Funder's Grant Number: EP/L024926/1
ESPRC (EP/G036888/1)
Publication Status: Published
Article Number: 10
Appears in Collections:Condensed Matter Theory
Faculty of Natural Sciences

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Creative Commonsx