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Broadband tunable THz absorption with singular graphene metasurfaces
| File | Description | Size | Format | |
|---|---|---|---|---|
 broadband-tunable-thz(1).pdf | Accepted version | 3.65 MB | Adobe PDF | View/Open |
| Title: | Broadband tunable THz absorption with singular graphene metasurfaces |
| Authors: | Galiffi, E Pendry, JB Huidobro, PA |
| Item Type: | Journal Article |
| Abstract: | By exploiting singular spatial modulations of the graphene conductivity, we design a broadband, tunable THz absorber whose efficiency approaches the theoretical upper bound for a wide absorption band with a fractional bandwidth of 185%. Strong field enhancement is exhibited by the modes of this extended structure, which is able to excite a wealth of high-order surface plasmons, enabling deeply subwavelength focusing of incident THz radiation. Previous studies have shown that the conductivity can be modulated at GHz frequencies, which might lead to the development of efficient high-speed broadband switching by an atomically thin layer. |
| Issue Date: | 11-Jan-2018 |
| Date of Acceptance: | 11-Jan-2018 |
| URI: | http://hdl.handle.net/10044/1/57942 |
| DOI: | https://dx.doi.org/10.1021/acsnano.7b07951 |
| ISSN: | 1936-0851 |
| Publisher: | American Chemical Society |
| Start Page: | 1006 |
| End Page: | 1013 |
| Journal / Book Title: | ACS Nano |
| Volume: | 12 |
| Issue: | 2 |
| Copyright Statement: | © 2018 American Chemical Society. This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Nano, after peer review and technical editing by the publisher. To access the final edited and published work see https://dx.doi.org/10.1021/acsnano.7b07951 |
| Sponsor/Funder: | Commission of the European Communities Commission of the European Communities Engineering & Physical Science Research Council (EPSRC) Engineering & Physical Science Research Council (EPSRC) University Of California The Royal Society Commission of the European Communities Particle Physics and Astronomy Research Council (PPARC) University Of California Engineering & Physical Science Research Council (EPSRC) Kodak Ltd Engineering & Physical Science Research Council (E Commission of the European Communities Engineering & Physical Science Research Council (EPSRC) The Royal Society The Leverhulme Trust European Office Of Aerospace Research & Developmen The Leverhulme Trust Defence Science and Technology Laboratory (DSTL) Gordon and Betty Moore Foundation Royal Commission for the Exhibition of 1851 Engineering & Physical Science Research Council (EPSRC) The Royal Society Commission of the European Communities Gordon and Betty Moore Foundation ESPRC |
| Funder's Grant Number: | IST-2001-35511 NMP4-CT-2003-505699 GR/S49544/01 GR/S49537/01 0205-G-CB259 502011.k526/KK IST-2001-35511 PPA/A/S/1999/00358 959636 EP/D503795/1 Studentship - Mr D Millson EP/D063329/1 213390 EP/G031819/1 NF082241 F/07 058/BF FA8655-09-1-3074 F/07 058/BK DSTLX1000064076 BB00099823 RF447/2012 EP/L024926/1 NF150755 702525 00009581 ESPRC (EP/G036888/1) |
| Keywords: | broadband absorber metamaterials singular structures surface plasmons terahertz tunable metasurfaces MD Multidisciplinary Nanoscience & Nanotechnology |
| Publication Status: | Published |
| Conference Place: | United States |
| Appears in Collections: | Condensed Matter Theory Physics Faculty of Natural Sciences |