Composite structure-based transparent ultra-broadband metamaterial absorber with multi-applications

Liu, Rui; Zhang, Binzhen; Duan, Junping; Dong, Lin; Yu, Juan; Zhang, Zhonghe

doi:10.1088/2053-1591/ab8996

Cited by 6 publications

(3 citation statements)

References 22 publications

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“…To solve these problems, the patterned metallic layers were replaced with highly transparent indium tin oxide (ITO) which possessed considerable sheet resistance for the working bandwidth extension. [18][19][20] However, their multilayered components were complex and showcased the fixed absorption performance once built. Therefore, integrating optical transparency, bidirectional absorption, and effective tunability into one single metadevice remains challenging.…”

Section: Introductionmentioning

confidence: 99%

Transparent Bilayer ITO Metasurface with Bidirectional and Coherently Controlled Microwave Absorption

Ge,

Zhang,

Zhang

et al. 2023

Advanced Optical Materials

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Metasurface absorbers (meta‐absorbers) are highly compelling in modern optoelectronic devices. However, owing to the limitations of the sandwiched design framework, conventional meta‐absorbers are restricted to fully absorbing only one‐sided incident waves while completely reflecting the electromagnetic (EM) waves from the opposite direction. In addition, the existing absorbers are opaque and their absorption performances are fixed after the initial design. Here, an optically transparent meta‐absorber consisting of bilayer indium tin oxide patterned layers that can achieve bidirectional and broadband absorption in the microwave frequency range is demonstrated. The inherent physics of bidirectional absorption can be attributed to the interference between multiple reflections and transmissions of EM waves. Furthermore, it is demonstrated that the absorption properties of the proposed meta‐absorber can be continuously switched via coherent control by adding another microwave beam to the other side of the meta‐absorber and manipulating the phase difference between the two input waves. The results indicate that the proposed design can enrich the functionalities of few‐layer metasurfaces and break new ground for EM shielding optical windows.

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Section: Introductionmentioning

confidence: 99%

Transparent Bilayer ITO Metasurface with Bidirectional and Coherently Controlled Microwave Absorption

Ge,

Zhang,

Zhang

et al. 2023

Advanced Optical Materials

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“…In 2017, Harsh Sheokand et al introduced a broadband metamaterial absorber based on ITO in the frequency of 6.06-14.66 GHz [33]. In 2020, Rui Liu et al designed a broadband metamaterial absorber based on composite structure in the frequency of 8-30.3 GHz [34]. Besides, several other similar broadband absorbers were proposed based on ITO resistive film [35][36][37][38][39][40][41].…”

Section: Introductionmentioning

confidence: 99%

An ultra-broadband flexible polarization-insensitive microwave metamaterial absorber

Jing¹,

Duan²,

Wei³

et al. 2022

Mater. Res. Express

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In this paper, an ultra-broadband flexible polarization-insensitive microwave metamaterial absorber is proposed, characterized, and fabricated. To achieve high broadband absorption, a two-layer periodic indium-tin-oxide (ITO) patches array printed on polyethylene terephthalate (PET) dielectric layers is used to generate high ohmic loss. The simulation results show that the proposed absorber can achieve greater than 90% absorption in the microwave band range of 19.68 to 94.7 GHz. The absorber is polarization-insensitive due to the symmetry of the structure with high absorption over a wide incidence angle of 60°. The mechanism of ultra-broadband absorption is discussed by the impedance matching theory, the surface current distribution, and the electric field distribution. In addition, the equivalent circuit model is utilized to analyze the effect of the structural parameters. Furthermore, the bow-frame method validates that the experimental measurements are consistent with the simulated spectra. With advantages of absorption of ultra-broadband, polarization-insensitivity, and flexibility, the proposed absorber facilitates its use in numerous potential applications for energy harvesting, imaging and sensing, stealth technology, modulating, and so on.

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“…Metamaterial absorbing materials are widely used in radar stealth systems, electromagnetic shielding, radiofrequency equipment and other practical applications [17][18][19][20][21]. However, strictly speaking, the abovedesigned absorbers are far from reaching practical application standards, the working frequency band of the vibration absorber is narrow, and the performance is still poor [22][23][24][25][26][27]. Therefore, how to achieve larger bandwidth and lower thickness through the design of absorbers is still a problem to be considered.…”

Section: Introductionmentioning

confidence: 99%

Transparent ultra-broadband absorber based on a tree seedling composite structure

Zhou¹,

Zhang²,

Duan³

et al. 2021

J. Phys. D: Appl. Phys.

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In this work, we design, analyze and process an ultra-broadband absorption optical transparent metamaterials absorbing device. The simulation results show that within the 13.68–71.6 GHz frequency range, the devicereaches more than 90% absorptivity, and that transverse magnetic waves and transverse waves under a large angle of polarization and incident angle can obtain high absorption performance. Therefore the device has the perfect performance of polarization insensitivity and wide angle of incidence. The absorbing mechanism is analyzed by using the equivalent medium theory, and the theoretical results are in good agreement with the simulation results. Because of its advantages of wideband absorption, high transparency, lightweight, and easy availability, the deive has important application value in practical civil and military fields, such as electromagnetic interference, electromagnetic compatibility, super lens, invisibility cloak, solar cell device design and so on.

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Composite structure-based transparent ultra-broadband metamaterial absorber with multi-applications

Cited by 6 publications

References 22 publications

Transparent Bilayer ITO Metasurface with Bidirectional and Coherently Controlled Microwave Absorption

Transparent Bilayer ITO Metasurface with Bidirectional and Coherently Controlled Microwave Absorption

An ultra-broadband flexible polarization-insensitive microwave metamaterial absorber

Transparent ultra-broadband absorber based on a tree seedling composite structure

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