Triple-band terahertz metamaterial absorber: Design, experiment, and physical interpretation

Shen, Xiaopeng; Yang, Yan; Zang, Yuanzhang; Gu, Jianqiang; Han, Jiaguang; Zhang, Weili; Cui, Tie Jun

doi:10.1063/1.4757879

Cited by 417 publications

(183 citation statements)

References 18 publications

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“…1, we assume that layer 1 is considered as a surface with zero thickness. S 11 = |S 11 |e jθ 11 is the reflection coefficient of layer 1 from area 1 to area 1, S 21 = |S 21 |e jθ 21 is the transmission coefficient of layer 1 from area 1 to area 2, S 12 = |S 12 |e jθ 12 is the transmission coefficient of layer 1 from area 2 to area 1, and S 22 = |S 22 |e jθ 22 is the reflection coefficient of layer 1 from area 2 to area 2. According to the interference theory 23 and due to the …”

Section: Extended Interference Theory Modelmentioning

confidence: 99%

“…Even though the interference theory, or multiple reflection theory, is not a new theory and has been studied in EM wave, 17 Microwave Engineering, 18 optics 19 and a kind of absorbance body named Salisbury Screen, 20 of which the configuration is similar with MMA, it still has some differences, namely the interference theory exhibits advantage for studying the MMA through quite-correct quantitative analysis. Until now, however, only normal incidence condition was analyzed for MMAs in previous literatures 16,21,22 and little attention paid on the oblique incidence conditions.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of metamaterial absorber in normal and oblique incidence by using interference theory

et al. 2013

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Metamaterial absorber (MMA), which is a kind of thin electromagnetic absorber consisting of sub-wavelength metamaterial resonators and can exhibit near-perfect absorption characteristics, has been widely investigated in recently years. The impedance matching theory was proposed to analyze the configuration of MMA in most literatures. Such theory, however, may not suitable to analyze the interactions of metamaterial resonators and the ground plane. The interference theory, on another hand, can play effective approach for this kind of problem presented in recent studies, whereas little attention has been paid on the oblique incidence conditions. In this paper, we firstly extend the interference theory model to make it applicable for oblique incident waves and analyze MMA using the extended interference theory model. Secondly, we further explore the sufficient condition for the maximum absorptivity at both normal and oblique incidence cases. Thirdly, with the sufficient condition, we can obtain the absorbing frequency directly if the thickness of MMA is given. These theoretical results have significant effects on the design and analyze of MMA. And lastly, we point out that absorptivity is not absolutely insensitive to the incidence angle in TM mode as what previous study claims, but insensitive when the dielectric slab is high loss, which can also be explained by interference theory

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Section: Extended Interference Theory Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analysis of metamaterial absorber in normal and oblique incidence by using interference theory

et al. 2013

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“…The unique properties of a metamaterial absorber have contributed many value added properties, such as nearly perfect absorption, ultra-thin structure and polarization independent. These advantages have led to the rapid growth of metamaterial absorbers in microwave and terahertz [16][17][18] frequency regimes too. Various metamaterial absorbers with different characteristics, such as single band [19,20], dual band [21][22][23][24][25][26][27][28][29], triple band [30][31][32][33][34], quad band [35], penta-band [36] and wide band absorption, have been developed and studied.…”

Section: Introductionmentioning

confidence: 99%

Design of Polarization-Insensitive Dual Band Metamaterial Absorber

Ramya¹,

Rao²

2016

PIER M

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Abstract-A new design has been proposed for a single layer polarization-insensitive dual-band metamaterial absorber at C and X bands. The proposed structure consists of a periodic arrangement of a circular resonator embedded in a square resonator. A commercially available FR4 dielectric has been used as a substrate with metallic grounded bottom and imprints on the other side. This structure resonates at 5.5 GHz and 8.9 GHz with absorptivity of 99.8% and 99.97%, respectively. It exhibits polarization-insensitive behaviour for Transverse Electric and Transverse Magnetic polarization under oblique and normal angles of incidence. The field distributions have been studied for better understanding of the absorption mechanism. The fabricated structure has been tested, and the experimental results are similar to the simulated ones. This polarization-insensitive metamaterial absorber with its ease of design and nearly unity absorption can be used for radar applications.

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“…6 Metamaterial absorber (MMA) has attracted considerable attention since Landy proposed an ultra-thin perfect absorber composed of artificial sub-wavelength composites. 7 To date, a large number of efforts [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23] have been made on MMAs to achieve multi-band absorption, broadband absorption, polarization-insensitive absorption and wide incident angle absorption, due to the important applications in the field of solar cells, 24 thermal emitters 25 and sensors. 26 In general, the traditional MMAs are constructed of a delicate periodic patterned metal layer for minimizing reflection by impedance matching and a background metal layer for blocking transmission, separated by a flat dielectric substrate for dissipating energy.…”

Section: Introductionmentioning

confidence: 99%

Low-frequency metamaterial absorber with small-size unit cell based on corrugated surface

et al. 2016

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In this paper, we report the design, analysis, and simulation of the low-frequency perfect metamaterial absorber (MMA) based on corrugated surface, which has very small unit-cell size. The proposed MMA consist of a regular square-array and a metallic background plane, separated by a corrugated surface with periodic square-pillar-array. Through the optimized design, the ratios between lattice constant and resonance wavelength for nearly-perfect and high absorption MMA are close to 1/15 and 1/21, respectively. To explain the absorption mechanism of suggested structures, the surface current and electromagnetic field distributions are given. Moreover, the absorption peaks remain high with large angles of incidence for both transverse electric and transverse magnetic polarizations, which provide more efficient absorptions for oblique incident electromagnetic wave.

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Triple-band terahertz metamaterial absorber: Design, experiment, and physical interpretation

Cited by 417 publications

References 18 publications

Analysis of metamaterial absorber in normal and oblique incidence by using interference theory

Analysis of metamaterial absorber in normal and oblique incidence by using interference theory

Design of Polarization-Insensitive Dual Band Metamaterial Absorber

Low-frequency metamaterial absorber with small-size unit cell based on corrugated surface

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