Broadband metamaterial perfect absorber obtained by coupling effect

Dang, Hong; Nguyễn, Văn Minh; Le, Dinh Hai; Nguyễn, Hoàng Tùng; Tran, Manh Cuong; Le, Dac Tuyen; Vu, Dinh Lam

doi:10.1142/s0218863517500369

Cited by 8 publications

(4 citation statements)

References 25 publications

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“…Great progress has been made in metamaterial absorbers (MA) since the first perfect metamaterial absorber (PMA) was put forward by Landy in 2008 [1]. MA may possess properties of multi-band absorption [3][4][5][6][7], broad-band absorption [8][9][10][11][12][13][14][23][24][25][26][27][28], polarization insensitive and wide-angle absorption [15][16][17][18][19], tunable absorption [20][21][22], and absorption based sensor [2]. Considering the practical applications such as stealth in military and civil areas, the absorbers should have broad-band and wide-angle absorption simultaneously.…”

Section: Introductionmentioning

confidence: 99%

“…Considering the practical applications such as stealth in military and civil areas, the absorbers should have broad-band and wide-angle absorption simultaneously. Several methods have been proposed to realize broad-band absorption, for example, combining multiple resonators in a single layer [23], loading lumped elements [9,10], using resistive films [8,14,28], building three dimensional (3D) structures [15,24,25,[30][31][32][33][34][35][36][37][38], the combinational use of plasma medium and graphene sheets [29], introducing spoof surface plasmon polaritons structures [14,28] and metasurfaces [27]. Recently, Nguyen et al proposed a MA with lumped resistor loaded fan-shaped resonator [26].…”

Section: Introductionmentioning

confidence: 99%

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Design of 3D broad-band and wide-angle absorber based on resistive metamaterial and magnetic absorbing material

Wang

et al. 2019

J. Phys. D: Appl. Phys.

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A 3D broad-band and wide-angle absorber (3D BWA) was designed through a 3D resistive metamaterial in which a traditional magnetic absorbing material was added on top of the metallic backplane. Owing to the better magnetic loss performance of the magnetic absorber at lower frequencies and superior impedance matching effect and ohmic loss property of the resistive films at higher frequencies, the absorption can be extended to a wider band through their combination. Simulation result shows that the absorption of the 3D BWA is more than 90% in the frequency range of 3.7-40 GHz at normal incidence, and it is in accordance with the experimental result. The absorption performance for each part of the 3D BWA was analyzed using electric field and magnetic field distributions, surface current distributions and Smith chart. For TE polarized waves of 3.7-40 GHz, the absorption with the incident angles of 0°-60° is more than 77%. The absorption higher than 80% can be achieved under TM polarized waves of 4.2-40 GHz as the incident angle changes from 0° to 60°. When the incident angle is 70°, the absorption is greater than 85% in the frequency range of 5.7-40 GHz. Owing to the four-fold rotationally symmetric unit cell structure, the absorption spectrum under different polarization angles remains unchanged. These two characteristics make the designed absorber a good candidate in stealth applications.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design of 3D broad-band and wide-angle absorber based on resistive metamaterial and magnetic absorbing material

Wang

et al. 2019

J. Phys. D: Appl. Phys.

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“…6 For developing terahertz system, sources and detectors are not the only components. Terahertz absorbers, 7 modulators, 8 splitters, 8 waveguides, 5,9 planar circuits, 8 etc. were recently reported.…”

Section: Introductionmentioning

confidence: 99%

“…is the refractive index of the antiresonant layer i, substituting Eq. (8) into Eq (7). gives the required thickness of the antiresonant layer i…”

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confidence: 99%

Low-loss ARROW waveguide with rectangular hollow core and rectangular low-density polyethylene/air reflectors for terahertz waves

Uranus

Rahman

2018

J. Nonlinear Optic. Phys. Mat.

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Designing low-loss waveguides for terahertz waves is challenging as most materials are very lossy in this frequency band. Most scientists simply consider transmitting the waves through low-loss air, which however also has its own difficulties as index-guiding is not possible. In this paper, we report on the design of low-loss waveguides for terahertz waves and associated results by using a finite element leaky mode solver. These results show that waveguides designed using ARROW (anti-resonant reflecting optical waveguide) approach yield a low combined absorption and leakage loss down to only 0.05[Formula: see text]dB/cm for the q-TE[Formula: see text] fundamental mode using realistic values of refractive index at 1 THz operating frequency. The structure employs rectangular hollow-core and low-density polyethylene/air anti-resonant reflecting bilayers, which can be easily fabricated. These results are compared with those of other structures, i.e., a photonic crystal fiber-like structures using the same materials with rectangular holes, which is shown to give a higher loss of 3[Formula: see text]dB/cm and a suspended air-core waveguide with TOPAS vein offering a loss of 1[Formula: see text]dB/cm.

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Dual-band isotropic metamaterial absorber based on near-field interaction in the Ku band

Dinh

Bùi

et al. 2020

Current Applied Physics

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Broadband metamaterial perfect absorber obtained by coupling effect

Cited by 8 publications

References 25 publications

Design of 3D broad-band and wide-angle absorber based on resistive metamaterial and magnetic absorbing material

Design of 3D broad-band and wide-angle absorber based on resistive metamaterial and magnetic absorbing material

Low-loss ARROW waveguide with rectangular hollow core and rectangular low-density polyethylene/air reflectors for terahertz waves

Dual-band isotropic metamaterial absorber based on near-field interaction in the Ku band

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