论文标题
带有成分的Anapole模式的疾病免疫元面积
Disorder-immune metasurfaces with constituents exhibiting the anapole mode
论文作者
论文摘要
常见的光学跨面是由定期布置的亚波长成分组成的二维功能设备。在这里，我们实现了由芯壳圆柱体组成的位置 - 免疫跨凹面条，该芯壳缸连续表现出磁性偶极子（MD）谐振剂，无辐射的anapole和电偶极子（ED）谐振模式时，当它们的外部半径固定并且内部radii在范围内持续变化。即使圆柱体的位置受到随机和相当大的位移，也不会降解元浮面的性能。位置 - 疾病免疫性是由于跨境的非本地效应造成的。因为圆柱体之间的多个散射对ED和MD谐振模式周围的圆柱体之间的间距不敏感，并且在非辐射的Anapole模式下的间距无关，因此在邻居之间的间距不敏感的范围内，包括反射阶段和反射范围的反射阶段以及反射范围都不敏感。位置驱动器免疫使元表面适应一些不稳定且苛刻的环境。
Common optical metasurfaces are 2-dimensional functional devices composed of periodically arranged subwavelength constituents. Here, we achieved the positional-disorder-immune metasurfaces composed of core-shell cylinders which successively exhibit the magnetic dipole (MD) resonant, non-radiating anapole, and electric dipole (ED) resonant modes when their outer radii are fixed and the inner radii changes continuously in a range. The performances of the metasurfaces under a periodically structural design are not degraded even when the positions of the cylinders are subjected to random and considerable displacements. The positional-disorder-immunity is due to the weak non-local effect of the metasurfaces. Because the multiple scattering among cylinders is weak and insensitive to the spacing among the cylinders around the ED and MD resonant modes and vanishing irrespective of the spacing at the non-radiating anapole mode, the reflection properties including the reflection phase and reflectivity of the metasurfaces are insensitive to the spacing between neighboring cylinders for this entire variation range of the inner radius. The positional-disorder-immunity make the metasurface to be adapted to some unstable and harsh environments.
