Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/124511
Citations | ||
Scopus | Web of Science® | Altmetric |
---|---|---|
?
|
?
|
Type: | Journal article |
Title: | Tunable localized surface plasmon graphene metasurface for multiband superabsorption and terahertz sensing |
Author: | Islam, M. Sultana, J. Biabanifard, M. Vafapour, Z. Nine, M.J. Dinovitser, A. Cordeiro, C.M.B. Ng, B.W.-H. Abbott, D. |
Citation: | Carbon, 2020; 158:559-567 |
Publisher: | Elsevier |
Issue Date: | 2020 |
ISSN: | 0008-6223 1873-3891 |
Statement of Responsibility: | M.S. Islam, J. Sultana, M. Biabanifard, Z. Vafapour, M.J. Nine, A. Dinovitser, C.M.B. Cordeiro, B.W.-H. Ng, D. Abbott |
Abstract: | We propose a plasmon induced tunable metasurface for multiband superabsorption and terahertz sensing. It consists of a graphene sheet that facilitates perfect absorption where the graphene pattern at the top layer creates an enhanced evanescent wave that facilitates the metasurface to work as a sensor. The modelling and numerical analysis are carried out using Finite Element Method (FEM) based software, CST microwave studio where a genetic algorithm (GA) is used to optimize the geometric parameters, and metasurface tunability is achieved via an external gate voltage on the graphene. By exploiting graphene’s tunable properties we demonstrate a multiband superabsorption spectra having a maximum absorption of 99.7% in a frequency range of 0.1–2.0 THz that also maintain unique optical performance over a wide incidence angle. Further results show how the superabsorber can be used as a sensor, where the resonance frequency shifts with the refractive index of the surrounding environment. |
Keywords: | Graphene; metasurface; absorber; terahertz sensor |
Rights: | © 2019 Elsevier Ltd. All rights reserved. |
DOI: | 10.1016/j.carbon.2019.11.026 |
Grant ID: | http://purl.org/au-research/grants/arc/DP170104984 |
Published version: | http://dx.doi.org/10.1016/j.carbon.2019.11.026 |
Appears in Collections: | Aurora harvest 8 Electrical and Electronic Engineering publications |
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.