Multi-resonance coupled metal pattern metamaterial for selective thermal emission

IF 1.1 4区 物理与天体物理 Q4 NANOSCIENCE & NANOTECHNOLOGY
Wei Li, Shenglan Wu, Chunhui Tian, Jiacheng Li, Shuang Liu, Genlin Wu
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引用次数: 0

Abstract

With the continuous improvement of detection technology, higher requirements are put forward for infrared camouflage. Conventional low-emissivity materials have serious thermal instability, which increases the risk of detection. There is an urgent need to investigate more efficient infrared stealth materials. We design a metamaterial selective broadband emitter that utilizes multi-resonance coupling of metal patterns for infrared stealth. The proposed design exhibits low emissivity in the infrared atmosphere windows (3 to 5 μm and 8 to 14 μm) for infrared suppression and high emissivity in the non-infrared atmosphere window (5 to 8 μm) for radiative cooling. We introduce a supplementary design for high-temperature environments to meet a broader application need. Moreover, the low angle-dependence of the metamaterial emitter enables it to maintain broadband absorption characteristics even under large-angle incidence. This proposed approach serves as an effective supplement to the design of metamaterial broadband emitters and holds great potential for applications in infrared stealth, radiative cooling, thermal detection, sensors, thermophotovoltaics, and various other fields.
用于选择性热发射的多共振耦合金属图案超材料
随着探测技术的不断提高,对红外伪装提出了更高的要求。传统的低辐射材料存在严重的热不稳定性,增加了被探测到的风险。研究更高效的红外隐身材料迫在眉睫。我们设计了一种超材料选择性宽带发射器,利用金属图案的多共振耦合实现红外隐形。所提出的设计在红外大气窗口(3 至 5 μm 和 8 至 14 μm)具有低发射率,可用于红外抑制,而在非红外大气窗口(5 至 8 μm)具有高发射率,可用于辐射冷却。我们引入了针对高温环境的补充设计,以满足更广泛的应用需求。此外,超材料发射器的低角度依赖性使其即使在大角度入射情况下也能保持宽带吸收特性。所提出的方法是对超材料宽带发射器设计的有效补充,在红外隐身、辐射冷却、热探测、传感器、热光电等领域具有巨大的应用潜力。
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来源期刊
Journal of Nanophotonics
Journal of Nanophotonics 工程技术-光学
CiteScore
2.60
自引率
6.70%
发文量
42
审稿时长
3 months
期刊介绍: The Journal of Nanophotonics publishes peer-reviewed papers focusing on the fabrication and application of nanostructures that facilitate the generation, propagation, manipulation, and detection of light from the infrared to the ultraviolet regimes.
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