A Tunable Terahertz Metamaterial Absorber Composed of Hourglass-Shaped Graphene Arrays.

Qi, Y; Zhang, Y; Liu, C; Zhang, T; Zhang, B; Wang, L; Deng, X; Wang, X; Yu, Y

A Tunable Terahertz Metamaterial Absorber Composed of Hourglass-Shaped Graphene Arrays.

Qi, Y Zhang, Y Liu, C Zhang, T Zhang, B Wang, L Deng, X Wang, X Yu, Y

Permalink

Publisher:: MDPI
Publication Type:: Journal Article
Citation:: Nanomaterials (Basel, Switzerland), 2020, 10, (3)
Issue Date:: 2020-03-17

Open Access

Copyright Clearance Process

Recently Added
In Progress
Open Access

This item is open access.

Adobe PDF

Download Accepted versionAdobe PDF (5.11 MB)

View on publisher's site

View statistics

Full metadata record

Field	Value	Language
dc.contributor.author	Qi, Y
dc.contributor.author	Zhang, Y
dc.contributor.author	Liu, C
dc.contributor.author	Zhang, T
dc.contributor.author	Zhang, B
dc.contributor.author	Wang, L
dc.contributor.author	Deng, X
dc.contributor.author	Wang, X
dc.contributor.author	Yu, Y https://orcid.org/0000-0001-9592-8191
dc.date.accessioned	2020-10-24T19:47:15Z
dc.date.available	2020-03-14
dc.date.available	2020-10-24T19:47:15Z
dc.date.issued	2020-03-17
dc.identifier.citation	Nanomaterials (Basel, Switzerland), 2020, 10, (3)
dc.identifier.issn	2079-4991
dc.identifier.issn	2079-4991
dc.identifier.uri	http://hdl.handle.net/10453/143517
dc.description.abstract	In this paper, we demonstrate a tunable periodic hourglass-shaped graphene arrays absorber in the infrared (IR) and terahertz (THz) frequency bands. The effects of graphene geometric parameters, chemical potentials, periods, and incident angles on the pure absorption characteristics are studied by using the Finite Difference Time Domain (FDTD) method. In addition, this paper also analyzes the pure absorption characteristics of bilayer graphene arrays. The simulation results show that the maximum absorption reaches 38.2% for the monolayer graphene structure. Furthermore, comparing the bilayer graphene structure with the monolayer structure under the same conditions shows that the bilayer structure has a tunable dual-band selective absorption effect and has a higher maximum absorption of 41.7%. Moreover, it was found that there are dual-band tunable absorption peaks at 26 μm and 36.3 μm with the maximum absorption of 41.7% and 11%. The proposed structure is a convenient method which could be used in the design of graphene-based optoelectronic devices, biosensors, and environmental monitors.
dc.format	Electronic
dc.language	eng
dc.publisher	MDPI
dc.relation.ispartof	Nanomaterials (Basel, Switzerland)
dc.relation.isbasedon	10.3390/nano10030533
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	0912 Materials Engineering, 1007 Nanotechnology
dc.title	A Tunable Terahertz Metamaterial Absorber Composed of Hourglass-Shaped Graphene Arrays.
dc.type	Journal Article
utslib.citation.volume	10
utslib.location.activity	Switzerland
utslib.for	0912 Materials Engineering
utslib.for	1007 Nanotechnology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney
utslib.copyright.status	open_access	*
dc.date.updated	2020-10-24T19:46:29Z
pubs.issue	3
pubs.publication-status	Published
pubs.volume	10
utslib.citation.issue	3

Abstract:

In this paper, we demonstrate a tunable periodic hourglass-shaped graphene arrays absorber in the infrared (IR) and terahertz (THz) frequency bands. The effects of graphene geometric parameters, chemical potentials, periods, and incident angles on the pure absorption characteristics are studied by using the Finite Difference Time Domain (FDTD) method. In addition, this paper also analyzes the pure absorption characteristics of bilayer graphene arrays. The simulation results show that the maximum absorption reaches 38.2% for the monolayer graphene structure. Furthermore, comparing the bilayer graphene structure with the monolayer structure under the same conditions shows that the bilayer structure has a tunable dual-band selective absorption effect and has a higher maximum absorption of 41.7%. Moreover, it was found that there are dual-band tunable absorption peaks at 26 μm and 36.3 μm with the maximum absorption of 41.7% and 11%. The proposed structure is a convenient method which could be used in the design of graphene-based optoelectronic devices, biosensors, and environmental monitors.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/143517