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Issue 17, 2020
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An ultra-broadband terahertz metamaterial coherent absorber using multilayer electric ring resonator structures based on anti-reflection coating

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Abstract

We propose a method for achieving THz ultra-broadband coherent absorption using the anti-reflection theory of metamaterials. The metamaterial absorber consists of a periodic array of electric ring resonators with a multilayered structure which form the desired refractive index dispersion and provide continuous anti-reflection over a wide frequency range. The destructive interference mechanism and resonance absorption of the absorber are determined by simulation analysis and numerical simulation. Simulation results show that the absorption bandwidth is almost 8.02 THz (absorption rate >90%) over the entire terahertz band (0.1 THz–10 THz). This design provides an effective and viable method for constructing broadband absorbers for stealth technology and the construction of enhanced transmittance devices.

Graphical abstract: An ultra-broadband terahertz metamaterial coherent absorber using multilayer electric ring resonator structures based on anti-reflection coating

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Article information


Submitted
18 Dec 2019
Accepted
02 Apr 2020
First published
07 Apr 2020

Nanoscale, 2020,12, 9769-9775
Article type
Paper

An ultra-broadband terahertz metamaterial coherent absorber using multilayer electric ring resonator structures based on anti-reflection coating

C. Du, D. Zhou, H. Guo, Y. Pang, H. Shi, W. Liu, J. Su, C. Singh, S. Trukhanov, A. Trukhanov, L. Panina and Z. Xu, Nanoscale, 2020, 12, 9769
DOI: 10.1039/C9NR10668E

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