EPJ Appl. Metamat.
Volume 7, 2020
Metamaterial Research Updates from China
|Number of page(s)||5|
|Published online||04 September 2020|
Ultrathin polarization-insensitive tri-band THz perfect metamaterial absorber
Xi'an Jiaotong University City College, Xi'an, PR China
2 Department of Basic Sciences, Air Force Engineering University, Xi'an, PR China
* e-mail: email@example.com
Accepted: 30 July 2020
Published online: 4 September 2020
In this paper, an ultrathin and polarization-insensitive THz perfect metamaterial absorber (PMA) was proposed using the traditional sandwiched structure with circular patch resonators on the top layer. The simulated spectrum shows that the proposed PMA has three distinctive absorption peaks at f1 = 0.8 THz, f2 = 2.28 THz and f3 = 3.62 THz, with absorbance of 96.7%, 97.9% and 99.8%, respectively. The electric field distributions of the PMA reveal that the absorption mainly originates from the standing wave resonances between the top and bottom layers. The proposed PMA is polarization insensitive due to its axisymmetric unit cell structure. By adjusting the structure parameters, the resonance frequency, intensity and Q-factor of absorption peak can be tuned effectively. Our design may find potential applications in THz imaging, sensing and signal detection.
Key words: Perfect metamaterial absorber (PMA) / circular patch resonator / the standing wave resonance theory
© Z. Liu et al., published by EDP Sciences, 2020
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.