Issue 2, 2020
From the journal:

Nanoscale Advances

Design of a dual-band terahertz metamaterial absorber using two identical square patches for sensing application

Ben-Xin Wang, ORCID logo *a   Yuanhao He,a   Pengcheng Loua  and  Wenhui Xinga  

* Corresponding authors

a School of Science, Jiangnan University, Wuxi, China
E-mail: wangbenxin@jiangnan.edu.cn

Abstract

A dual-band terahertz metamaterial absorber composed of two identical square metallic patches and an insulating medium layer on top of a continuous metallic ground is demonstrated. Two resonance peaks (labeled A and B) with near 100% absorbance are obtained, of which peak A derived from the localized resonance of the two square patches has a line-width of 0.2571 THz and quality factor of 6.9156, while peak B which resulted from the hybrid coupling of the localized resonance of the two square patches and surface lattice resonance of the device has a very narrow line-width of 0.0083 THz and large quality factor of 296.2771. Narrow line-width and large quality factor have important prospects in sensing application. Based on this, the sensing performance of the device is explored; it is revealed that peak B exhibits highly sensitive sensing ability (including a sensing sensitivity of 1.9010 THz per RIU and figure of merit of 229.04) in terms of the surrounding index. In addition, the influence of structural parameters on the absorption performance is discussed to further verify the formation mechanism of these two absorption peaks.

Graphical abstract: Design of a dual-band terahertz metamaterial absorber using two identical square patches for sensing application

About
Cited by
Related
Download options Please wait...

Article information

DOI
https://doi.org/10.1039/C9NA00770A
Article type
Paper
Submitted
09 Dec 2019
Accepted
02 Jan 2020
First published
03 Jan 2020
This article is Open Access
Creative Commons BY-NC license

Nanoscale Adv., 2020,2, 763-769

Permissions

Request permissions

Design of a dual-band terahertz metamaterial absorber using two identical square patches for sensing application

B. Wang, Y. He, P. Lou and W. Xing, Nanoscale Adv., 2020, 2, 763 DOI: 10.1039/C9NA00770A

This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. You can use material from this article in other publications, without requesting further permission from the RSC, provided that the correct acknowledgement is given and it is not used for commercial purposes.

To request permission to reproduce material from this article in a commercial publication, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party commercial publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements