Multispectral terahertz sensing with highly flexible ultrathin metamaterial absorber

We report the simulation, fabrication, and experimental characterization of a multichannel metamaterial absorber with the aim to be used as a label-free sensing platform in the terahertz regime. The topology of the investigated resonators deposited on a thin flexible polymer by means of optical lith...

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Main Authors: Yahiaoui, Riad, Tan, Siyu, Cong, Longqing, Singh, Ranjan, Yan, Fengping, Zhang, Weili
Other Authors: School of Electrical and Electronic Engineering
Format: Article
Language:English
Published: 2015
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Online Access:https://hdl.handle.net/10356/79325
http://hdl.handle.net/10220/38810
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-793252023-02-28T19:29:32Z Multispectral terahertz sensing with highly flexible ultrathin metamaterial absorber Yahiaoui, Riad Tan, Siyu Cong, Longqing Singh, Ranjan Yan, Fengping Zhang, Weili School of Electrical and Electronic Engineering School of Physical and Mathematical Sciences Refractive index Aluminium Terahertz detectors Metamaterials Dielectric thin films We report the simulation, fabrication, and experimental characterization of a multichannel metamaterial absorber with the aim to be used as a label-free sensing platform in the terahertz regime. The topology of the investigated resonators deposited on a thin flexible polymer by means of optical lithography is capable of supporting multiple resonances over a broad frequency range due to the individual contribution of each sub-element of the unit cell. In order to explore the performance of the chosen structure in terms of sensing phenomenon, the reflection feature is monitored upon variation of the refractive index and the thickness of the analyte. We achieve numerically maximum frequency sensitivity of about 139.2 GHz/refractive index unit. Measurements carried out using terahertz time-domain spectroscopy show good agreement with the numerical predictions. The results are very promising, suggesting a potential use of the metamaterial absorber in wide variety of multispectral terahertz sensing applications. Published version 2015-10-16T06:20:36Z 2019-12-06T13:22:35Z 2015-10-16T06:20:36Z 2019-12-06T13:22:35Z 2015 2015 Journal Article Yahiaoui, R., Tan, S., Cong, L., Singh, R., Yan, F., & Zhang, W. (2015). Multispectral terahertz sensing with highly flexible ultrathin metamaterial absorber. Journal of Applied Physics, 118(8), 083103-. https://hdl.handle.net/10356/79325 http://hdl.handle.net/10220/38810 10.1063/1.4929449 en Journal of Applied Physics © 2015 American Institute of Physics (AIP). This paper was published in Journal of Applied Physics and is made available as an electronic reprint (preprint) with permission of American Institute of Physics (AIP). The published version is available at: [http://dx.doi.org/10.1063/1.4929449]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Refractive index
Aluminium
Terahertz detectors
Metamaterials
Dielectric thin films
spellingShingle Refractive index
Aluminium
Terahertz detectors
Metamaterials
Dielectric thin films
Yahiaoui, Riad
Tan, Siyu
Cong, Longqing
Singh, Ranjan
Yan, Fengping
Zhang, Weili
Multispectral terahertz sensing with highly flexible ultrathin metamaterial absorber
description We report the simulation, fabrication, and experimental characterization of a multichannel metamaterial absorber with the aim to be used as a label-free sensing platform in the terahertz regime. The topology of the investigated resonators deposited on a thin flexible polymer by means of optical lithography is capable of supporting multiple resonances over a broad frequency range due to the individual contribution of each sub-element of the unit cell. In order to explore the performance of the chosen structure in terms of sensing phenomenon, the reflection feature is monitored upon variation of the refractive index and the thickness of the analyte. We achieve numerically maximum frequency sensitivity of about 139.2 GHz/refractive index unit. Measurements carried out using terahertz time-domain spectroscopy show good agreement with the numerical predictions. The results are very promising, suggesting a potential use of the metamaterial absorber in wide variety of multispectral terahertz sensing applications.
author2 School of Electrical and Electronic Engineering
author_facet School of Electrical and Electronic Engineering
Yahiaoui, Riad
Tan, Siyu
Cong, Longqing
Singh, Ranjan
Yan, Fengping
Zhang, Weili
format Article
author Yahiaoui, Riad
Tan, Siyu
Cong, Longqing
Singh, Ranjan
Yan, Fengping
Zhang, Weili
author_sort Yahiaoui, Riad
title Multispectral terahertz sensing with highly flexible ultrathin metamaterial absorber
title_short Multispectral terahertz sensing with highly flexible ultrathin metamaterial absorber
title_full Multispectral terahertz sensing with highly flexible ultrathin metamaterial absorber
title_fullStr Multispectral terahertz sensing with highly flexible ultrathin metamaterial absorber
title_full_unstemmed Multispectral terahertz sensing with highly flexible ultrathin metamaterial absorber
title_sort multispectral terahertz sensing with highly flexible ultrathin metamaterial absorber
publishDate 2015
url https://hdl.handle.net/10356/79325
http://hdl.handle.net/10220/38810
_version_ 1759854361248268288