论文标题
由葡萄牙掺杂的钨构建的等离子随机跨表面的红外屏蔽
Infrared-Shielding of Plasmonic Random Metasurface Constructed by Cesium-Doped Tungsten Bronze
论文作者
论文摘要
理论上使用有限差差时域方法研究了由带有随机位移和/或随机变形的球形或球体纳米颗粒组成的随机跨表面的热屏蔽特性。使用元表面中纳米颗粒的总面积定义了有效覆盖范围，并研究了针对随机性的近红外光反射的稳健性。当有效覆盖范围很高时，与六边形的闭合封闭式完美的跨表面相比，纳米颗粒的排列和形状随机性的近红外光反射至少降低了20％。相反，当有效覆盖范围较低时，纳米颗粒排列的随机性几乎对近红外光反射没有影响。此外，通过纳米颗粒形状的随机性提高了近红外的光反射性能。
The heat-shielding properties of random metasurface, composed of spherical or spheroidal nanoparticles with random displacements and/or random deformation, were theoretically investigated using the finite difference time domain method. The effective coverage was defined using the total area of nanoparticles in the metasurface, and the robustness of the near-infrared light reflection against randomness was investigated. When the effective coverage was high, the near-infrared light reflection was reduced by at least 20% in both nanoparticle arrangement and shape randomness compared to the hexagonal close-packed perfect metasurface. In contrast, when effective coverage was low, the randomness of the nanoparticle arrangement had almost no effect on the near-infrared light reflection. Furthermore, the near-infrared light reflection performance was improved by the randomness of the nanoparticle shape.
