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Narrowband Metamaterial Absorber for Terahertz Secure Labeling

Narrowband Metamaterial Absorber for Terahertz Secure Labeling Flexible metamaterial films, fabricated by photolithography on a thin copper-backed polyimide substrate, are used to mark or barcode objects securely. The films are characterized by continuous-wave terahertz spectroscopic ellipsometry and visualized by a scanning confocal imager coupled to a vector network analyzer that constructed a terahertz spectral hypercube. These films exhibit a strong, narrowband, polarization- and angle-insensitive absorption at wavelengths near 1 mm. Consequently, the films are nearly indistinguishable at visible or infrared wavelengths and may be easily observed by terahertz imaging only at the resonance frequency of the film. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Infrared, Millimeter, and Terahertz Waves Springer Journals

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References (22)

Publisher
Springer Journals
Copyright
Copyright © 2017 by Springer Science+Business Media New York
Subject
Engineering; Electrical Engineering; Electronics and Microelectronics, Instrumentation; Classical Electrodynamics
ISSN
1866-6892
eISSN
1866-6906
DOI
10.1007/s10762-017-0389-7
Publisher site
See Article on Publisher Site

Abstract

Flexible metamaterial films, fabricated by photolithography on a thin copper-backed polyimide substrate, are used to mark or barcode objects securely. The films are characterized by continuous-wave terahertz spectroscopic ellipsometry and visualized by a scanning confocal imager coupled to a vector network analyzer that constructed a terahertz spectral hypercube. These films exhibit a strong, narrowband, polarization- and angle-insensitive absorption at wavelengths near 1 mm. Consequently, the films are nearly indistinguishable at visible or infrared wavelengths and may be easily observed by terahertz imaging only at the resonance frequency of the film.

Journal

Journal of Infrared, Millimeter, and Terahertz WavesSpringer Journals

Published: May 31, 2017

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