Broadband and wideangle absorption of transparent conformal metamaterial

Mo, Biming; Wang, Chao

doi:10.1007/s42114-021-00410-1

Cited by 17 publications

(4 citation statements)

References 35 publications

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“…The absorption band under Model 2 is also blue-shifted. It can be seen by equations (7), ( 8) and (9) that when h 1 gradually increases, the total thickness d of the absorber also gradually increases, which leads to a decrease in the refractive index η and a decrease in the effective permittivity and permeability of the MMA, which in turn affects the electromagnetic response ofthe MMA and ultimately the absorption of the MMA. Figure 5(b) shows the changes in the absorption response of the MMA when h 2 is varied.…”

Section: Design and Discussionmentioning

confidence: 99%

“…With the increasingly rapid development of electronics [1,2], electronic devices with higher operating bands and powers have sprung up, and the ensuing electromagnetic pollution has caused non-negligible effects on sophisticated equipment and people's health [3][4][5]. To eliminate adverse electromagnetic radiation, metamaterial absorbers(MMAs) are used in a wide range of applications from military to civilian [6,7]. Singleband [8], multi-band [9], and broadband [10] MMAs have been realized.…”

Section: Introductionmentioning

confidence: 99%

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A transparent water-based metamaterial broadband absorber with a tunable absorption band

Yao¹,

Qu²,

Duan³

et al. 2022

Phys. Scr.

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In this study, a tunable and optically transparent water-based wideband metamaterial absorber (MMA) is proposed and verified. By adjusting the thickness of the water layer, the conversion of the absorber absorption band from 7.4-22.4 GHz to 23.1-35.5 GHz can be achieved, which demonstrates the flexibility of MMA. Indium tin oxide (ITO) as the resonant and reflective layers of the material structure. Optically transparent polymethyl methacrylate (PMMA) is used as a medium container to encapsulate the water. Furthermore, the suggested MMA is polarization insensitive and has broad incident angle stability. Experiments verify the excellent properties of the proposed MMA. As a result, the suggested MMA has various applications in military and medical equipment optical windows.

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Section: Design and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A transparent water-based metamaterial broadband absorber with a tunable absorption band

Yao¹,

Qu²,

Duan³

et al. 2022

Phys. Scr.

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“…9 Recently, an ITO-based composite resonance structure was used to design optically transparent broadband metamaterial absorbers with high efficiency and wide incidence stability. 10 Besides their novel plasmonic and optical properties, ITO nanoparticles also offer a rich diversity of electronic and catalytic properties, making them prime candidates in many advanced applications. Facile electrocatalytic oxidation of tripropyl amine (TPA) and ascorbic acid on ITO nanoparticle modified electrodes was found.…”

Section: Introductionmentioning

confidence: 99%

Gas phase fabrication of morphology-controlled ITO nanoparticles and their assembled conductive films

Jiang

Chen

et al. 2023

Nanoscale

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“…Recent developments in ITO have heightened the inspiration for MAs, a series of broadband absorbers were developed. Relevant studies cover microwave [21,31,32], terahertz [33,34] and infrared [35] bands, and typical configurations include multi-layer resonant stack [36,37] and multi-resonant structure [38][39][40]. The current challenge mainly lies in how to balance high absorption, large bandwidth and thin thickness.…”

Section: Introductionmentioning

confidence: 99%

Optically transparent conformal ultra-broadband metamaterial absorber based on ITO conductive film

Ren

Zhang

et al. 2023

J. Phys. D: Appl. Phys.

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A metamaterial absorber with optical transparency and flexibility is proposed. To make it optically transparent, the substrate is made of polyvinyl chloride, and the pattern layer is made of a transparent conductive indium tin oxide film deposited in polyethylene terephthalate between the substrate and the top PVC. At the same time, indium tin oxide film is also introduced in the bottom layer. As a result, the entire structure has optical transparency. The metamaterial absorber was demonstrated by performing a full-wave electromagnetic simulation and measured in free space. Numerical simulation shows that 90% absorption bandwidth ranged from 6.54-18.66 GHz, 97% bandwidth ranged from 6.54-18.66 GHz. Due to its symmetrical shape, the absorber is not sensitive to polarization. When the incidence Angle is more than 60 degrees, the absorption rate of the absorber can still be more than 85%. Finally, the experimental verification is in good agreement with the numerical simulation, which verifies the accuracy of the results.

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Broadband and wideangle absorption of transparent conformal metamaterial

Cited by 17 publications

References 35 publications

A transparent water-based metamaterial broadband absorber with a tunable absorption band

A transparent water-based metamaterial broadband absorber with a tunable absorption band

Gas phase fabrication of morphology-controlled ITO nanoparticles and their assembled conductive films

Optically transparent conformal ultra-broadband metamaterial absorber based on ITO conductive film

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