scholarly journals Ultrathin Six-Band Polarization-Insensitive Perfect Metamaterial Absorber Based on a Cross-Cave Patch Resonator for Terahertz Waves

Materials ◽  
2017 ◽  
Vol 10 (6) ◽  
pp. 591 ◽  
Author(s):  
Yong Cheng ◽  
Mu Huang ◽  
Hao Chen ◽  
Zhen Guo ◽  
Xue Mao ◽  
...  
Keyword(s):  
Metamaterial Absorber ◽  
Terahertz Waves ◽  
Polarization Insensitive ◽  
Perfect Metamaterial Absorber

scholarly journals Comment on “Dual-Band Perfect Metamaterial Absorber Based on an Asymmetric H-Shaped Structure for Terahertz Waves [Materials] (2018) [2193; https://doi.org/10.3390/ma11112193]”

Materials ◽  
2019 ◽  
Vol 12 (23) ◽  
pp. 3914
Author(s):  
Fahad Ahmed ◽  
Afzal Ahmed ◽  
Tania Tamoor ◽  
Tayyab Hassan
Keyword(s):  
Metamaterial Absorber ◽  
Dual Band ◽  
Terahertz Waves ◽  
Perfect Metamaterial Absorber

In a recent publication, Lu et al [...]

scholarly journals Dual-Band Perfect Metamaterial Absorber Based on an Asymmetric H-Shaped Structure for Terahertz Waves

Materials ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 2193 ◽  
Author(s):  
Taiguo Lu ◽  
Dawei Zhang ◽  
Peizhen Qiu ◽  
Jiqing Lian ◽  
Ming Jing ◽  
...  
Keyword(s):  
Metamaterial Absorber ◽  
Dual Band ◽  
Interference Theory ◽  
Metamaterial Structure ◽  
Terahertz Waves ◽  
Potential Applications ◽  
Band Absorption ◽  
Perfect Metamaterial Absorber ◽  
Simulation Results ◽  
Absorption Frequencies

We designed an ultra-thin dual-band metamaterial absorber by adjusting the side strips’ length of an H-shaped unit cell in the opposite direction to break the structural symmetry. The dual absorption peaks approximately 99.95% and 99.91% near the central resonance frequency of 4.72 THz and 5.0 THz were obtained, respectively. Meanwhile, a plasmon-induced transmission (PIT) like reflection window appears between the two absorption frequencies. In addition to theoretical explanations qualitatively, a multi-reflection interference theory is also investigated to prove the simulation results quantitatively. This work provides a way to obtain perfect dual-band absorption through an asymmetric metamaterial structure, and it may achieve potential applications in a variety of fields including filters, sensors, and some other functional metamaterial devices.

scholarly journals A wide-angle and TE/TM polarization-insensitive terahertz metamaterial near-perfect absorber based on multi-layer plasmonic structure

2021 ◽  
Author(s):  
Yuanbo Sun ◽  
Yanpeng Shi ◽  
Xiaoyu Liu ◽  
Jinmei Song ◽  
Meiping Li ◽  
...  
Keyword(s):  
Design Method ◽  
Metamaterial Absorber ◽  
Perfect Absorber ◽  
Wide Angle ◽  
Flexible Design ◽  
Plasmonic Structure ◽  
Terahertz Band ◽  
Polarization Insensitive ◽  
Perfect Metamaterial Absorber

A kind of near-perfect metamaterial absorber, made of only Au and Si, has been presented in the terahertz band with extremely high absorptance. A flexible design method is proposed, which...

Six-band polarization-insensitive perfect metamaterial absorber using L-shaped resonators

2019 ◽  
Vol 125 (5) ◽  
Author(s):  
Ai-Xia Wang ◽  
Shao-Bo Qu ◽  
Ming-bao Yan ◽  
Wen-Jie Wang ◽  
Jia-fu Wang ◽  
...  
Keyword(s):  
Metamaterial Absorber ◽  
Polarization Insensitive ◽  
Perfect Metamaterial Absorber

scholarly journals Ultrathin polarization-insensitive tri-band THz perfect metamaterial absorber

2020 ◽  
Vol 7 ◽  
pp. 2
Author(s):  
Zhaomei Liu ◽  
Xingxing Han ◽  
Aixia Wang
Keyword(s):  
Cell Structure ◽  
Metamaterial Absorber ◽  
Q Factor ◽  
Simulated Spectrum ◽  
Thz Imaging ◽  
Potential Applications ◽  
Polarization Insensitive ◽  
Perfect Metamaterial Absorber ◽  
Sandwiched Structure ◽  
Patch Resonators

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.

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