scholarly journals Polarization-insensitive infrared-visible perfect metamaterial absorber and permittivity sensor

2019 ◽  
Vol 14 ◽  
pp. 102429 ◽  
Author(s):  
Mohammad Jakir Hossain ◽  
Mohammad Rashed Iqbal Faruque ◽  
Md. Raju Ahmed ◽  
Md. Jubaer Alam ◽  
Mohammad Tariqul Islam
Keyword(s):  
Metamaterial Absorber ◽  
Polarization Insensitive ◽  
Perfect Metamaterial Absorber

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.

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

2017 ◽  
Author(s):  
Yong Zhi Cheng ◽  
Mu Lin Huang ◽  
Hao Ran Chen ◽  
Zhen Zhong Guo ◽  
Xue Song Mao ◽  
...  
Keyword(s):  
Ground Plane ◽  
Transverse Magnetic ◽  
Metamaterial Absorber ◽  
Quality Factors ◽  
Absorption Properties ◽  
Density Distributions ◽  
Resonance Frequencies ◽  
Polarization Insensitive ◽  
Perfect Metamaterial Absorber ◽  
High Level

A simple design of an ultrathin six-band polarization-insensitive terahertz perfect metamaterial absorber (PMMA) composed of a metal cross-cave-patch resonator (CCPR) placed over a ground plane was proposed and investigated numerically. The numerical simulation results demonstrate that the average absorption peaks are up to 95% at six resonance frequencies with high quality-factors (>65). In addition, the absorption properties can be kept stability for both normal incident transverse magnetic (TM) and transverse electric (TE) waves. The physical mechanism behind the observed high level absorption is illustrated by the electric and power loss density distributions. The different absorption mainly originates from the higher order multipolar and multipolar plasmon resonance of the structure, which are sharp different to the most previous studies of the PMMAs. Furthermore, the resonance absorption of the PMMA can be tunable by varying the geometric parameters of the unit cell.

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

2017 ◽  
Author(s):  
Yong Zhi Cheng ◽  
Mu Lin Huang ◽  
Hao Ran Chen ◽  
Zhen Zhong Guo ◽  
Xue Song Mao ◽  
...  
Keyword(s):  
Ground Plane ◽  
Transverse Magnetic ◽  
Metamaterial Absorber ◽  
Quality Factors ◽  
Absorption Properties ◽  
Density Distributions ◽  
Resonance Frequencies ◽  
Polarization Insensitive ◽  
Perfect Metamaterial Absorber ◽  
High Level

A simple design of an ultrathin six-band polarization-insensitive terahertz perfect metamaterial absorber (PMMA) composed of a metal cross-cave-patch resonator (CCPR) placed over a ground plane was proposed and investigated numerically. The numerical simulation results demonstrate that the average absorption peaks are up to 95% at six resonance frequencies with high quality-factors (>65). In addition, the absorption properties can be kept stability for both normal incident transverse magnetic (TM) and transverse electric (TE) waves. The physical mechanism behind the observed high level absorption is illustrated by the electric and power loss density distributions. The different absorption mainly originates from the higher order multipolar and multipolar plasmon resonance of the structure, which are sharp different to the most previous studies of the PMMAs. Furthermore, the resonance absorption of the PMMA can be tunable by varying the geometric parameters of the unit cell.

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