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Mid-infrared dual-band absorber based on nested metamaterial structure
Abstract
A dual-band metamaterial absorber based on nested nanostructures is proposed. Finite-difference timedomain simulations revealed two resonance absorption peaks with narrow half-widths in the mid-infrared, with center wavelengths at 3.87 and 4.57 µm. The structure exhibited extremely high sensitivity with no polarization sensitivity. Triple-band absorption was observed by controlling the thickness of the top pattern layer. The effects of various metallic materials and geometric structures on the absorption are discussed. The nested infrared-absorbing structure has potential applications in sensors and detectors. Furthermore, multiple absorption peaks via thickness changes provide a theoretical basis for future research on multiband absorption.
About the Authors
Z. Li
International Joint Research Center for Nanophotonics and Biophotonics, Nanophotonics and Biophotonics Key Laboratory of Jilin Province, School of Science at Changchun University of Science and Technology
China
China
Changchun, 130022
J. Li
International Joint Research Center for Nanophotonics and Biophotonics, Nanophotonics and Biophotonics Key Laboratory of Jilin Province, School of Science at Changchun University of Science and Technology
China
China
Changchun, 130022
Y. Zhang
International Joint Research Center for Nanophotonics and Biophotonics, Nanophotonics and Biophotonics Key Laboratory of Jilin Province, School of Science at Changchun University of Science and Technology
China
China
Changchun, 130022
Y. Zhai
International Joint Research Center for Nanophotonics and Biophotonics, Nanophotonics and Biophotonics Key Laboratory of Jilin Province, School of Science at Changchun University of Science and Technology
China
China
Changchun, 130022
X. Chu
International Joint Research Center for Nanophotonics and Biophotonics, Nanophotonics and Biophotonics Key Laboratory of Jilin Province, School of Science at Changchun University of Science and Technology
China
China
Changchun, 130022
Y. Zhang
International Joint Research Center for Nanophotonics and Biophotonics, Nanophotonics and Biophotonics Key Laboratory of Jilin Province, School of Science at Changchun University of Science and Technology
China
China
Changchun, 130022
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Review
For citations:
Li Z., Li J., Zhang Y., Zhai Y., Chu X., Zhang Y. Mid-infrared dual-band absorber based on nested metamaterial structure. Zhurnal Prikladnoii Spektroskopii. 2021;88(6):981.
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