A Broadband Compatible Multispectral Metamaterial Absorber for Visible, Near‐Infrared, and Microwave Bands

Li, Meiling; Muneer, Badar; Yi, Zixuan; Zhu, Qi

doi:10.1002/adom.201701238

Cited by 56 publications

(30 citation statements)

References 41 publications

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“…Moreover, the material degradation by ultraviolet (UV) radiation also needs to be settled urgently because the weapons are exposed to sunlight all year round. Although metamaterials (MMs) researchers have conducted multibands studies, such as optically transparent microwave absorbing materials, multispectral absorption MMs, and multibands resonators, etc., only two or three bands were involved, and the multibands compatibility has not been deeply explored. When devices worked in real environments, dust particles accumulated on its surface over time, which would have an adverse effect on its light manipulation performance.…”

mentioning

confidence: 99%

Bioinspired Metamaterials: Multibands Electromagnetic Wave Adaptability and Hydrophobic Characteristics

Huang

Duan

Dai

et al. 2019

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the light-responsive properties also have excellent adaptability to the environment. [7] Under the inspiration of these controllable optical properties, a variety of advanced material systems have been proposed significantly. [7,8] However, researchers were simply concentrated in a specific waveband due to the great difficulty to achieve the compatibility of multispectral properties, which greatly hinders advance science and the application fields expanding of novel photonic materials. For example, in order to avoid the detection of microwave radar, infrared detector, and visual observation, the stealth materials on military armament have been separately developed during microwave, infrared, and visible light range; [9][10][11] but the above stealth properties were difficult to be compatible in one weapon, thus, the problem of perfect stealth (stealth during full wavebands) is still not solved to date. Moreover, the material degradation by ultraviolet (UV) radiation also needs to be settled urgently because the weapons are exposed to sunlight all year round. Although metamaterials (MMs) researchers have conducted multibands studies, [12] such as optically transparent microwave absorbing materials, [13] multispectral absorption MMs, [14] and multibands resonators, [15] etc., only two or three bands were involved, and the multibands compatibility has not been deeply explored. When devices worked in real environments, dust particles accumulated on its surface over time, which would have an adverse effect on its light manipulation performance. In order to avoid this problem, it is desirable to integrate a self-cleaning ability induced by hydrophobic property of material into the equipment. [16] In this context, a hierarchical structure model of moth compound eye that might manipulate multibands EMWs was found here, as shown in Figure 1a. [17,18] This is a noctuid moth living in Heilongjiang Province of China; the hierarchical and sub-wavelength structures that are arranged in a highly ordered array of its eye surface could suppress the reflection of light to avoid detection by nocturnal predators and to see clearly in darkness, which is based on rigorous coupled wave analysis (RCWA) and finite difference time domain (FDTD) methods, [19] as well as relative research on moth eye model. [18,20] This feature makes the moth-eye model one of the most effective antireflective structures in nature. Although various photonic devices inspired by natural materials have been developed, there is no research focusing on multibands adaptability, whichis not conducive to the advancement of materials science. Herein, inspired by the moth eye surface model, state-of-the-art hierarchical metamaterials (MMs) used as tunable devices in multispectral electromagnetic-waves (EMWs) frequency range, from microwave to ultraviolet (UV), are designed and prepared. Experimentally, the robust broad bandwidth of microwave absorption greater than 90% (reflection loss (RL) < −10 dB) covering almost entire X and Ku bands (8.04-17.88 GHz) under a de...

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confidence: 99%

Bioinspired Metamaterials: Multibands Electromagnetic Wave Adaptability and Hydrophobic Characteristics

Huang

Duan

Dai

et al. 2019

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139

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“…In such a case, the input admittance can be matched by placing the resonators with different resonant frequencies in different layers and adjusting thickness of the dielectric spacer between them [102]. Compared to the single matchinglayer absorber in which metamaterials require a complex shape for multiple resonances, in the vertically stacked structure, it is possible to obtain broadband absorption even with a relatively simple shape [102][103][104][105]. In [103], broadband infrared absorber including two chromium ring layers is demonstrated ( Figure 8C).…”

Section: Thin Meta-absorbers With Admittance Matching Layersmentioning

confidence: 99%

“…In [103], broadband infrared absorber including two chromium ring layers is demonstrated ( Figure 8C). In [104], a multiplexed broadband absorber that works simultaneously for the solar spectrum and microwaves is implemented by designing the broadband absorber in the microwave regime with multiple layers, including a material capable of absorbing solar radiation. In [105], multi-layer broadband absorber that contain metallic bars of various lengths are suggested.…”

Section: Thin Meta-absorbers With Admittance Matching Layersmentioning

confidence: 99%

“…Although there have been efforts to analyze multilayer absorbers using admittance-matching conditions [82,104], absorber analysis based on admittance-matching becomes complicated and less intuitive when the number of constituting layers increases. In such cases, different physical explanations have been suggested to provide physical insights in understanding how these multilayer structures function as broadband absorbers.…”

Section: Alternative Physical Explanations For Broadband Meta-absorbersmentioning

confidence: 99%

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Broadband metamaterials and metasurfaces: a review from the perspectives of materials and devices

Jung

Park

et al. 2020

Nanophotonics

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AbstractMetamaterials can possess extraordinary properties not readily available in nature. While most of the early metamaterials had narrow frequency bandwidth of operation, many recent works have focused on how to implement exotic properties and functions over broad bandwidth for practical applications. Here, we provide two definitions of broadband operation in terms of effective material properties and device functionality, suitable for describing materials and devices, respectively, and overview existing broadband metamaterial designs in such two categories. Broadband metamaterials with nearly constant effective material properties are discussed in the materials part, and broadband absorbers, lens, and hologram devices based on metamaterials and metasurfaces are discussed in the devices part.

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“…Fabrication of microwave metamaterials composed of conductive materials usually involve a screen-printing process or an inkjet printing process 20 – 25 . These processes can fabricate various shapes of circuit patterns (square loop 26 – 28 , cross dipole 29 – 31 , fivefold 23 , 25 , 32 , square patch 33 – 35 , and so on) on a dielectric substrate. Although printing processes are promising candidates for low-cost fabrication of microwave metamaterials, it is difficult to adjust the sheet resistance value for different parts of a pattern in a finely-controlled fashion.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and characterization of resistive double square loop arrays for ultra-wide bandwidth microwave absorption

Jeong

Lee²,

Park

et al. 2021

Sci Rep

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Microwave absorbers using conductive ink are generally fabricated by printing an array pattern on a substrate to generate electromagnetic fields. However, screen printing processes are difficult to vary the sheet resistance values for different regions of the pattern on the same layer, because the printing process deposits materials at the same height over the entire surface of substrate. In this study, a promising manufacturing process was suggested for engraved resistive double square loop arrays with ultra-wide bandwidth microwave. The developed manufacturing process consists of a micro-end-milling, inking, and planing processes. A 144-number of double square loop array was precisely machined on a polymethyl methacrylate workpiece with the micro-end-milling process. After engraving array structures, the machined surface was completely covered with the developed conductive carbon ink with a sheet resistance of 15 Ω/sq. It was cured at room temperature. Excluding the ink that filled the machined double square loop array, overflowed ink was removed with the planing process to achieve full filled and isolated resistive array patterns. The fabricated microwave absorber showed a small radar cross-section with reflectance less than − 10 dB in the frequency band range of 8.0–14.6 GHz.

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A Broadband Compatible Multispectral Metamaterial Absorber for Visible, Near‐Infrared, and Microwave Bands

Cited by 56 publications

References 41 publications

Bioinspired Metamaterials: Multibands Electromagnetic Wave Adaptability and Hydrophobic Characteristics

Bioinspired Metamaterials: Multibands Electromagnetic Wave Adaptability and Hydrophobic Characteristics

Broadband metamaterials and metasurfaces: a review from the perspectives of materials and devices

Fabrication and characterization of resistive double square loop arrays for ultra-wide bandwidth microwave absorption

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