Broadband-absorption mechanism in a water-based metamaterial absorber

Meng, Zi Fan; Tao, Zhihua; Ruan, Jiufu; Zou, Rui Zhi; Ji, Shengwei

doi:10.1016/j.physleta.2022.128269

Cited by 11 publications

(7 citation statements)

References 42 publications

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“…At the frequency of 2.7 THz, the electric field locates mostly at the upper border of water and Teflon shell and it is very weak at the bottom, while the magnetic field concentrates at the upper half of the cylindrical water resonator and the upper border of water and Teflon shell. Based on this observation, it can be summarized that the chemical interaction between water and the Teflon substrate generates the electromagnetic resonator [39]. Furthermore, the electric and magnetic resonance are both contributed to these absorption peaks.…”

Section: Resultsmentioning

confidence: 82%

“…Furthermore, the electric and magnetic resonance are both contributed to these absorption peaks. It was reported that the magnetic resonance is major contribution to broadband absorption [33,39] in the water-based absorbers. It is due to the coupling of water and PTFE at the top border [33].…”

Section: Resultsmentioning

confidence: 99%

“…Then, numerous water-based absorbers have been reported [24][25][26][27][28][29][30][31], but most of them operate in the GHz range. Recently, water-base absorbers worked the THz frequency range get more research interest [29,32,33,[37][38][39][40]. However, in the range from 0.1-10 THz, which is the hotspot of research today [41], the number of proposed water-based absorbers is still limited.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Simple Design of Water-based Broadband Metamaterial Absorber for THz Applications

Kim

Nguyen

Nguyễn³

et al. 2023

Comm. in Phys.

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A simple water-based broadband metamaterial absorber has been proposed for the terahertz region. The absorption bandwidth is extended based on large frequency dispersive permittivity and high relative dielectric loss of water. The simulated result indicates that the absorption of the proposed structure achieves over 90% in the frequency range from 0.6 to 10 THz at a normal incident angle. Moreover, the performance maintains high over 80% with a wide incident angle up to 60o for transverse electronic (TE) mode and over 90% up to 700 transverse magnetic (TM) mode in the entire operating frequency range. Therefore, the designed absorber has a potential candidate for broadband THz applications.

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Section: Resultsmentioning

confidence: 82%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Simple Design of Water-based Broadband Metamaterial Absorber for THz Applications

Kim

Nguyen

Nguyễn³

et al. 2023

Comm. in Phys.

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show abstract

“…The cylindrical water structure works with a significant absorption increase at 25 GHz, but both the lower-frequency and higher-frequency absorption are still weak. Inspired by the polarization-insensitive and wide-angle absorption performance of the cylindrical water [27], we choose the cylindrical water upon the top layer of Model-II and obtain Model-III, which has absorptivity more than 80% in the range of 5-40 GHz due to the increasing resonant modes. Moreover, the coupling between multiple resonances improves broadband absorption performance.…”

Section: Absorption Performancementioning

confidence: 99%

A Transparent broadband all-dielectric water-based metamaterial absorber based on laser cutting

Wen

Wang

et al. 2023

Phys. Scr.

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Gradually attracting attention on the all-dielectric broadband metamaterial absorber is developing in the application of multi-functionalization, such as the optical transparent transmission function of the microwave absorber. In this paper, we designed an all-dielectric transparent broadband metamaterial absorber utilizing the composited structure of the layered and cylindrical water with the shell of cross-shaped PMMA. Then, the series of the patterned shell are fabricated by the two-dimensional laser cutting technology with ultra-fast, accurate and simplified process. Both the simulated and experimental performance show high absorption over 90% at 13.3-40 GHz and optical transmittance of 73% with polarization insensitivity and wide-angle incident tolerance. Furthermore, the transparent absorber can modulate the low-frequency absorptivity by adjusting the temperature and ion concentration. Our all-dielectric transparent broadband metamaterial absorber based on laser cutting technology has promising potential in a wider range of both civil and military applications.

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“…With the advantages of simple structures, corrosion resistance and isotropy over traditional metal-based metamaterials, they have attracted much attention from various fields including EM absorption. Up to now, many different kinds of all-dielectric metamaterial absorbers (ADMMAs) have been proposed [14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32]. ADMMAs are usually constructed by dielectric elements with high permittivity that can excite obvious Mie resonances.…”

Section: Introductionmentioning

confidence: 99%

Broadband carbon-based all-dielectric metamaterial absorber enhanced by high-contrast gratings based spoof surface plasmon polaritons

Guo

Wang²,

Zhuang³

et al. 2023

Phys. Scr.

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In this paper, high-contrast gratings based spoof surface plasmon polaritons (HCG-based SSPPs), as a new mechanism of all-dielectric metamaterial absorbers (ADMMAs), are used to enhance their bandwidth. Accordingly, a broadband ADMMA is designed with carbon black composite. It consists of a cylinder array structure which is made of this composite. The simulation results show that broadband absorption is realized from 6.1GHz to 18GHz with three absorption peaks under a total thickness of 3.9mm. The first peak is attributed to HCG-based SSPPs, while the other two are attributed to diffraction effects. The improved impedance matching characteristic in a wide band also makes an important contribution. The experimental results are agreed roughly with the simulation results. In addition, the structure designed is not a standard HCG, indicating that HCG-based SSPPs are expected to become universal mechanism of ADMMAs. It is believed that this work will push forward further studies on more applications of HCG-based SSPPs in ADMMAs.

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Broadband-absorption mechanism in a water-based metamaterial absorber

Cited by 11 publications

References 42 publications

A Simple Design of Water-based Broadband Metamaterial Absorber for THz Applications

A Simple Design of Water-based Broadband Metamaterial Absorber for THz Applications

A Transparent broadband all-dielectric water-based metamaterial absorber based on laser cutting

Broadband carbon-based all-dielectric metamaterial absorber enhanced by high-contrast gratings based spoof surface plasmon polaritons

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