Abstract The tailoring of the electromagnetic wave plays a more and more critical role in various fields, such as infrared detection, invisibility, and telecommunication. Nowadays, the requirement for dual- and wide-band tailoring is more and more intense. In order to achieve infrared stealth property in addition to possessing the ability of radiative cooling, a composite periodic structure is proposed to meet the demand with multispectral tailoring. The metasurface is composed of circle-shaped lattices with different diameters and integrated insulator layers in one period. With this composite metasurface, low emission in the range of two atmospheric windows (3 ∼ 5 μ m and 8 ∼ 14 μ m ) and broadband absorption from 5 to 8 μ m are achieved. The suppressed emissivity enables the surface realize the infrared stealth. Radiative cooling is taken into account with the high emissivity from 5 to 8 μ m . The inner mechanisms of the proposed composite periodic metasurface are revealed with intercepted magnetic and electric fields. Moreover, the spectral features with the change of incident angles are investigated, and the selective tailoring ability keeps almost unchanged even when the incident angle is up to 60 degrees. The obtained multifunctional characteristic through composite periodic metasurface demonstrates considerable prospect in the applications of detection, invisibility, radiative cooling, and other areas.

中文翻译：

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具有多尺度和多材料超表面的光谱特征的宽带选择性裁剪

摘要 电磁波的剪裁在红外探测、隐身、电信等各个领域发挥着越来越重要的作用。如今，对双频和宽带剪裁的需求越来越强烈。为了在具备辐射冷却能力的同时实现红外隐身性能，提出了一种复合周期结构来满足多光谱剪裁的需求。超表面由不同直径的圆形晶格和一个周期内集成的绝缘体层组成。使用这种复合超表面，实现了两个大气窗口（3~5μm 和 8~14μm）范围内的低发射和 5~8μm 的宽带吸收。抑制的发射率使表面实现红外隐身。考虑到辐射冷却，具有 5 至 8 μm 的高发射率。通过截获的磁场和电场揭示了所提出的复合周期性超表面的内部机制。此外，研究了随入射角变化的光谱特征，即使入射角达到60度，选择性剪裁能力也几乎保持不变。通过复合周期性超表面获得的多功能特性在探测、隐身、辐射冷却等领域的应用中显示出相当大的前景。研究了随着入射角变化的光谱特征，即使入射角达到60度，选择性裁剪能力也几乎保持不变。通过复合周期性超表面获得的多功能特性在探测、隐身、辐射冷却等领域的应用中显示出相当大的前景。研究了随着入射角变化的光谱特征，即使入射角达到60度，选择性裁剪能力也几乎保持不变。通过复合周期性超表面获得的多功能特性在探测、隐身、辐射冷却等领域的应用中显示出相当大的前景。