Broadband radar cross section reduction by in-plane integration of scattering metasurfaces and magnetic absorbing materials

Li, Wei; Zhang, Yazhong; Wu, Tianlong; Cao, Jie; Chen, Zhihong; Guan, Jianguo

doi:10.1016/j.rinp.2019.01.080

Cited by 39 publications

(16 citation statements)

References 41 publications

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“…Clearly, the specular scattering at 0°(i.e., the zero-order diffractive efficiency) reaches minimum and reflection splitting occurs when Δϕ crosses over 180°. The Δϕ of specular destructive condition is not strict 180°b ut belongs to a wide interval of 150-210°, [45] leading to the reflection splitting over a relatively wide wavelength range. As Δϕ is an accumulated result of light propagation, the reflection splitting effect is profoundly influenced by the gap g. Extra large or small g will induce red or blueshift of the reflection splitting wavebands (Figure S4, Supporting Information).…”

Section: Mechanisms Of Reflection Splitting: Phase Difference Inducin...mentioning

confidence: 99%

Bioinspired Meta‐Reflection‐Splitter for Near‐Infrared Laser Stealth with Large Scattering Angle

Liu

Yan

Wang

et al. 2022

Laser & Photonics Reviews

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Metasurface based phase manipulation has shown great capable of controlling anomalous reflection for low observability against laser active detection. However, current meta-based designs for laser stealth in near-infrared (NIR) range suffer from small scattering angles and complex fabrication process, and this hinders their mass productivity and flexible application in actual environments. Here, a bioinspired strategy is proposed to design a meta-reflection-splitter with a large scattering angle and strongly extinct specular reflection for NIR laser stealth, motivated by the color splitting effect on the green scale of butterfly Diaethria clymena. The biological reflection splitting is demonstrated to originate from the 180°phase difference of reflection created by the unsymmetrical laminae on densely arranged ridges. A simple etching-free approach is further developed to generate large-scale meta-reflector-splitter by self-assembly of colloidal particles. This large-area meta-reflector-splitter shows high-efficient low observability (ultralow specular reflectance <1%) accompanied by a scattering angle of nearly 50°under the 1064 nm laser detection as well as a low mid-infrared emissivity. This work sheds light on the phase manipulation of biophotonic structures and thus benefits the innovation in advanced optical materials and devices.

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Section: Mechanisms Of Reflection Splitting: Phase Difference Inducin...mentioning

confidence: 99%

Bioinspired Meta‐Reflection‐Splitter for Near‐Infrared Laser Stealth with Large Scattering Angle

Liu

Yan

Wang

et al. 2022

Laser & Photonics Reviews

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“…Effective absorption bandwidths with absorption rates greater than 85% cover 5.5-19.7 GHz and 22.5-27.5 GHz under 5.5 mm thickness [29]. Furthermore, the metastructure with shape of grating [30], pyramid [31] and so on also could improve the absorption performance. Our previous works also demonstrated that the bionic metastructures also could improve the absorption property [32][33][34].…”

Section: Introductionmentioning

confidence: 99%

Thin layers of microwave absorbing metamaterials with carbon fibers and FeSi alloy ribbons to enhance the absorption properties

2023

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In order to break through the bottleneck of narrow effective absorption bandwidth (reflection loss RL ≤ −10 dB) of microwave absorbing materials, herein, we fabricate the metamaterials with carbon fiber (CF) and FeSi alloy (FSA) ribbon metastructure which is distributed in the carbonyl iron powders (CIP)/polyurethane (PU) matrix. The experimental results show that the microwave absorption capacity of the matrix can be significantly enhanced by CF. Compared with the pure matrix, the effective absorption bandwidth increases from 9.4–13.44 GHz to 11–16.8 GHz when the CF is parallel to the electric field vector and the spacing between adjacent CF is 20 mm. Furthermore, the CF and FSA ribbons are arranged in the matrix as an orthogonal arrangement, and the best absorption bandwidth cover 9.76–14.46 GHz when the electric field is parallel and 9.96–14.1GHz when the electric field is vertical when the spacing is 30 mm. The electromagnetic simulation of the metamaterials is calculated, it is proved that the increase of effective absorption bandwidth is due to the strengthening of carbon fiber and its coupling with FSA ribbon. This paper provides a new research path for improving the absorption properties of thin layer microwave absorbing materials.

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“…Toward this goal, metamaterials alternating two Electromagnetic Band Gap (EBG) materials with square and circular patterns are presented in [1]. Other solutions are implemented with Artificial Magnetic Conductors (AMC) [2] and magnetic materials [3]. For the back-scattering reduction and the interference mitigation, a novel approach is to use semitransparent architectures made of resistive layers with operation principle similar to the well-known resistive cards (R-cards) [4]- [7].…”

Section: Introductionmentioning

confidence: 99%

Absorptivity Modulation with Salisbury-Inspired Structures for X-Band

Xhoandri

Hoang

Martins

et al. 2022

2022 16th European Conference on Antennas and Propagation (EuCAP)

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HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

show abstract

Broadband radar cross section reduction by in-plane integration of scattering metasurfaces and magnetic absorbing materials

Cited by 39 publications

References 41 publications

Bioinspired Meta‐Reflection‐Splitter for Near‐Infrared Laser Stealth with Large Scattering Angle

Bioinspired Meta‐Reflection‐Splitter for Near‐Infrared Laser Stealth with Large Scattering Angle

Thin layers of microwave absorbing metamaterials with carbon fibers and FeSi alloy ribbons to enhance the absorption properties

Absorptivity Modulation with Salisbury-Inspired Structures for X-Band

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