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Efficient carpet invisibility cloaking with dielectric resonant metasurfaces in terahertz region
Laser Physics Letters ( IF 1.4 ) Pub Date : 2021-01-09 , DOI: 10.1088/1612-202x/abd5b3
Tian Lu 1 , Dantian Feng 1, 2 , Bo Fang 3 , Pengwei Zhou 1, 4 , Dong Yao 4 , Xufeng Jing 1, 2 , Chenxia Li 1 , Haiyong Gan 5 , Yingwei He 5 , Jinhui Cai 3 , Zhi Hong 2
Affiliation  

The application of metasurface in invisibility technology is mainly based on its phase control function, which provides a new choice for the design of ultra-thin carpet cloaking devices with arbitrary shape. At present, most of the carpet cloaking devices mainly focus on metal structure metasurfaces. The Ohmic loss of metallic materials seriously affects the efficiency of cloaking devices. To reduce Ohmic loss and improve reflection efficiency, a dielectric resonance cylindrical harmonic oscillator is proposed to construct the metasurface layer. Based on the analysis of the principle of carpet reflection cloaking, a dielectric metasurface layer is optimized to cover a triangular scatterer, making it invisible. The near field and far field scattering characteristics of dielectric metasurface carpet cloaking device are numerically simulated to confirm its cloaking effect.



中文翻译:

太赫兹区域中具有介电共振超表面的有效地毯隐形隐身

超表面技术在隐形技术中的应用主要是基于其相位控制功能,为任意形状的超薄地毯隐身装置的设计提供了新的选择。目前,大多数地毯遮盖装置主要集中在金属结构超表面上。金属材料的欧姆损耗严重影响了隐身装置的效率。为了减少欧姆损耗并提高反射效率,提出了一种介电共振圆柱谐波振荡器来构造超表面层。在分析地毯反射隐匿原理的基础上,优化了介电超表面层以覆盖三角形散射体,使其不可见。

更新日期:2021-01-09
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