A tunable terahertz metamaterial absorber composed of elliptical ring graphene arrays with refractive index sensing application

A tunable terahertz metamaterial absorber composed of elliptical ring graphene arrays with refractive index sensing application

In this paper, we demonstrate a tunable absorber composed of periodically patterned elliptical ring graphene metamaterial arrays. An absorption peak at 53.6μm with the maximum absorption of 49.2% of pure graphene layer has been realized. The effects of different parameters are studied by the Finite...

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Main Authors: Yunping Qi, Yu Zhang, Chuqin Liu, Ting Zhang, Baohe Zhang, Liyuan Wang, Xiangyu Deng, Yulong Bai, Xiangxian Wang
Format: Article
Language:English
Published: Elsevier 2020-03-01
Series:Results in Physics
Subjects:
Graphene
Metamaterial absorber
Surface plasmon resonance
Finite difference time domain
Online Access:http://www.sciencedirect.com/science/article/pii/S2211379720301881
id doaj-1eab77b4d3b74428aee4e33417cc988c
record_format Article
spelling doaj-1eab77b4d3b74428aee4e33417cc988c2020-11-25T03:34:22ZengElsevierResults in Physics2211-37972020-03-0116103012A tunable terahertz metamaterial absorber composed of elliptical ring graphene arrays with refractive index sensing applicationYunping Qi0Yu Zhang1Chuqin Liu2Ting Zhang3Baohe Zhang4Liyuan Wang5Xiangyu Deng6Yulong Bai7Xiangxian Wang8College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China; Engineering Research Center of Gansu Provence for Intelligent Information Technology and Application, Northwest Normal University, Lanzhou 730070, China; Corresponding authors at: College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China (Y. Qi).College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China; Corresponding authors at: College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China (Y. Qi).College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, ChinaCollege of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, ChinaCollege of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, ChinaCollege of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, ChinaCollege of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China; Engineering Research Center of Gansu Provence for Intelligent Information Technology and Application, Northwest Normal University, Lanzhou 730070, ChinaCollege of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China; Engineering Research Center of Gansu Provence for Intelligent Information Technology and Application, Northwest Normal University, Lanzhou 730070, ChinaSchool of Science, Lanzhou University of Technology, Lanzhou 730050, ChinaIn this paper, we demonstrate a tunable absorber composed of periodically patterned elliptical ring graphene metamaterial arrays. An absorption peak at 53.6μm with the maximum absorption of 49.2% of pure graphene layer has been realized. The effects of different parameters are studied by the Finite Difference Time Domain (FDTD) method. Besides, we simulate the spectra as the surrounding refractive index changes to better evaluate the sensing performance of the structure, producing a structure with the sensitivity up to 14110 nm/RIU. Finally, this paper also analyzes the absorption characteristics of bilayer graphene structure, and has a tunable dual-band selective absorption effect with a maximum absorption of 49.6%. Based on the research, it is more convenient to design the graphene-based optoelectronic devices, biosensor and environmental monitor.http://www.sciencedirect.com/science/article/pii/S2211379720301881GrapheneMetamaterial absorberSurface plasmon resonanceFinite difference time domain
collection DOAJ
language English
format Article
sources DOAJ
author Yunping Qi
Yu Zhang
Chuqin Liu
Ting Zhang
Baohe Zhang
Liyuan Wang
Xiangyu Deng
Yulong Bai
Xiangxian Wang
spellingShingle Yunping Qi
Yu Zhang
Chuqin Liu
Ting Zhang
Baohe Zhang
Liyuan Wang
Xiangyu Deng
Yulong Bai
Xiangxian Wang
A tunable terahertz metamaterial absorber composed of elliptical ring graphene arrays with refractive index sensing application
Results in Physics
Graphene
Metamaterial absorber
Surface plasmon resonance
Finite difference time domain
author_facet Yunping Qi
Yu Zhang
Chuqin Liu
Ting Zhang
Baohe Zhang
Liyuan Wang
Xiangyu Deng
Yulong Bai
Xiangxian Wang
author_sort Yunping Qi
title A tunable terahertz metamaterial absorber composed of elliptical ring graphene arrays with refractive index sensing application
title_short A tunable terahertz metamaterial absorber composed of elliptical ring graphene arrays with refractive index sensing application
title_full A tunable terahertz metamaterial absorber composed of elliptical ring graphene arrays with refractive index sensing application
title_fullStr A tunable terahertz metamaterial absorber composed of elliptical ring graphene arrays with refractive index sensing application
title_full_unstemmed A tunable terahertz metamaterial absorber composed of elliptical ring graphene arrays with refractive index sensing application
title_sort tunable terahertz metamaterial absorber composed of elliptical ring graphene arrays with refractive index sensing application
publisher Elsevier
series Results in Physics
issn 2211-3797
publishDate 2020-03-01
description In this paper, we demonstrate a tunable absorber composed of periodically patterned elliptical ring graphene metamaterial arrays. An absorption peak at 53.6μm with the maximum absorption of 49.2% of pure graphene layer has been realized. The effects of different parameters are studied by the Finite Difference Time Domain (FDTD) method. Besides, we simulate the spectra as the surrounding refractive index changes to better evaluate the sensing performance of the structure, producing a structure with the sensitivity up to 14110 nm/RIU. Finally, this paper also analyzes the absorption characteristics of bilayer graphene structure, and has a tunable dual-band selective absorption effect with a maximum absorption of 49.6%. Based on the research, it is more convenient to design the graphene-based optoelectronic devices, biosensor and environmental monitor.
topic Graphene
Metamaterial absorber
Surface plasmon resonance
Finite difference time domain
url http://www.sciencedirect.com/science/article/pii/S2211379720301881
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