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Title: Dual-surface flexible THz Fano metasensor
Authors: Srivastava, Yogesh Kumar
Cong, Longqing
Singh, Ranjan
Keywords: Optical Properties
Materials Properties
Issue Date: 2017
Source: Srivastava, Y. K., Cong, L., & Singh, R. (2017). Dual-surface flexible THz Fano metasensor. Applied Physics Letters, 111(20), 201101-.
Series/Report no.: Applied Physics Letters
Abstract: 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.
ISSN: 0003-6951
DOI: 10.1063/1.5000428
Rights: © 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: []. 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.
Fulltext Permission: open
Fulltext Availability: With Fulltext
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