Dual-surface flexible THz Fano metasensor

Sensing technologies based on terahertz waves have immense potential due to their non-destructive, transparent, and fingerprint spectral response of several materials that are opaque to other parts of the electromagnetic spectrum. Terahertz metasensors reported so far merely exploit the fringing ele...

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Main Authors: Srivastava, Yogesh Kumar, Cong, Longqing, Singh, Ranjan
Other Authors: School of Physical and Mathematical Sciences
Format: Article
Language:English
Published: 2017
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Online Access:https://hdl.handle.net/10356/86700
http://hdl.handle.net/10220/44175
https://doi.org/10.21979/N9/MUB6QV
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-867002023-02-28T19:37:40Z Dual-surface flexible THz Fano metasensor Srivastava, Yogesh Kumar Cong, Longqing Singh, Ranjan School of Physical and Mathematical Sciences Centre for Disruptive Photonic Technologies (CDPT) The Photonics Institute Optical Properties Materials Properties Sensing technologies based on terahertz waves have immense potential due to their non-destructive, transparent, and fingerprint spectral response of several materials that are opaque to other parts of the electromagnetic spectrum. Terahertz metasensors reported so far merely exploit the fringing electric field on the top of the subwavelength resonators. Here, we experimentally demonstrate an ultrathin flexible terahertz metamaterial sensor on a low refractive index substrate which enables sensing of analytes from the top and bottom surfaces of the metamaterial, opening up avenues for dual-surface sensing of analytes with fringing resonant fields on both front and rear sides of a metasurface. Since most of the real-world objects have 3D curvatures, the reported flexible metasensor with large mechanical strength and stability in free space would be an ideal platform for ultrasensitive sensing of dielectrics, chemicals, and biomolecules of extremely low concentrations with dual non-planar surfaces. MOE (Min. of Education, S’pore) Published version 2017-12-20T08:24:08Z 2019-12-06T16:27:38Z 2017-12-20T08:24:08Z 2019-12-06T16:27:38Z 2017 Journal Article Srivastava, Y. K., Cong, L., & Singh, R. (2017). Dual-surface flexible THz Fano metasensor. Applied Physics Letters, 111(20), 201101-. 0003-6951 https://hdl.handle.net/10356/86700 http://hdl.handle.net/10220/44175 10.1063/1.5000428 en Applied Physics Letters https://doi.org/10.21979/N9/MUB6QV © 2017 AIP Publishing. This paper was published in Applied Physics Letters and is made available as an electronic reprint (preprint) with permission of AIP Publishing. The published version is available at: [https://doi.org/10.1063/1.5000428]. 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. 5 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Optical Properties
Materials Properties
spellingShingle Optical Properties
Materials Properties
Srivastava, Yogesh Kumar
Cong, Longqing
Singh, Ranjan
Dual-surface flexible THz Fano metasensor
description Sensing technologies based on terahertz waves have immense potential due to their non-destructive, transparent, and fingerprint spectral response of several materials that are opaque to other parts of the electromagnetic spectrum. Terahertz metasensors reported so far merely exploit the fringing electric field on the top of the subwavelength resonators. Here, we experimentally demonstrate an ultrathin flexible terahertz metamaterial sensor on a low refractive index substrate which enables sensing of analytes from the top and bottom surfaces of the metamaterial, opening up avenues for dual-surface sensing of analytes with fringing resonant fields on both front and rear sides of a metasurface. Since most of the real-world objects have 3D curvatures, the reported flexible metasensor with large mechanical strength and stability in free space would be an ideal platform for ultrasensitive sensing of dielectrics, chemicals, and biomolecules of extremely low concentrations with dual non-planar surfaces.
author2 School of Physical and Mathematical Sciences
author_facet School of Physical and Mathematical Sciences
Srivastava, Yogesh Kumar
Cong, Longqing
Singh, Ranjan
format Article
author Srivastava, Yogesh Kumar
Cong, Longqing
Singh, Ranjan
author_sort Srivastava, Yogesh Kumar
title Dual-surface flexible THz Fano metasensor
title_short Dual-surface flexible THz Fano metasensor
title_full Dual-surface flexible THz Fano metasensor
title_fullStr Dual-surface flexible THz Fano metasensor
title_full_unstemmed Dual-surface flexible THz Fano metasensor
title_sort dual-surface flexible thz fano metasensor
publishDate 2017
url https://hdl.handle.net/10356/86700
http://hdl.handle.net/10220/44175
https://doi.org/10.21979/N9/MUB6QV
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