Ze-Lin An

Beijing University of Technology

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Ru‐Zhi Wang

Beijing University of Technology

Shengjun Zhang

Jingdezhen Ceramic Institute

Chao Wang

Beijing University of Technology

Li-Ying Liu

Beijing University of Technology

Zhixiang Tang

Hunan University

Weidong Wang

University of Science and Technology of China

Yunsheng Zhou

Hubei University

Li Liu

China Academy of Launch Vehicle Technology

Liying Liu

Xi'an Jiaotong University

Lihong Ai

China Aerospace Science and Industry Corporation (China)

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Beijing University of Technology

Nanjing University

Chongqing University

Numerical Method (China)

China Academy of Launch Vehicle Technology

Northwest Normal University

Advanced Materials and Devices (United States)

Advanced Energy Materials (United States)

Materials Science & Engineering

Ministry of Education of the People's Republic of China

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Broadband spectrally selective infrared radiation and its applications of a superstructure film of combined circular patches

Journal of Applied Physics (2023)

Ze-Lin An Li Liu Li-Ying Liu Chao Wang Lihong Ai

Selective infrared radiation is crucial for achieving infrared stealth and heat dissipation. Artificially designed superstructure film (SF) provides several advantages for controlling and modulating infrared radiation, making them a promising solution for these applications. The research described in this work has successfully produced broadband selective infrared radiation by using a surface made up of circular patches that are combined. Numerical simulations show that this SF can achieve broadband selective radiation with 3–5 μm mid-wave infrared (MWIR) suppression and 8–14 μm long-wave infrared (LWIR) emission. The spectral selectivity can be easily switched to high emissivity in MWIR and low emissivity in LWIR by simply changing the basal layer. The resonance mechanism for achieving broadband spectral selectivity in the SF may be due to a combination of multimode plasmon resonances that are induced by the structural nonrotational symmetry of the circular patches. By applying the selective radiation SF on the tail nozzle or the vehicle, the effect of thermal management is very significant. Selective radiation SF can reduce radiant energy in the 3−5 μm band by a significant amount at 500 °C, resulting in a 46 °C cooler temperature than that at the body without the SF. At 80 °C, radiated energy in the 8–14 μm band is also considerably reduced and the temperature is 10 °C lower than that of the body without the SF. There will be obvious advantages in potential applications for infrared stealth and heat dissipation by the designed SF, a simple and convenient manufacturing process.

Selective surface

Thermal Radiation

Radiation properties

Radiant energy

Low emissivity

10.1063/5.0152953

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A low-cost digital coding metasurface applying modified ‘crusades-like’ cell topologies for broadband RCS reduction

Journal of Physics D Applied Physics (2022)

Chao Wang Ru‐Zhi Wang Ze-Lin An Liying Liu Yunsheng Zhou

Abstract The popularity of metasurfaces (MSs) has been continuously grown due to their powerful ability to manipulate electromagnetic waves. One of their important application areas is radar stealth technology, in particular, the realization of radar cross section (RCS) reduction. However, the high costs of substrate material limit its large-scale applications. In this paper, a binary digital coding metasurface (DCM) with novel modified ‘crusades-like’ cell topologies is proposed and implemented using a low-cost FR4 substrate to achieve broadband RCS reduction (RCSR). To realize the 1-bit DCM, initially, two elements with rotational symmetry are chosen for polarization insensitive properties while considering an unconventional phase deviation criteria. Next, the optimal hybrid coding layout is given out by using a genetic algorithm and antenna array theory. Last, the proposed novel MS prototype composed of 40 × 40 unit cells is fabricated and measured to validate the RCSR behaviour predicted by full-wave simulation. The results show a good consistency between the theoretical simulation and experimental measurement from 7.9 to 15.8 GHz. In addition, the simulation results indicate that the designed MS features high angular stability. Our work may provide a promising approach and good reference for the low-cost MS design in radar stealth applications.

Radar cross-section

10.1088/1361-6463/ac9539

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Citations (6)