Zhou Shiwei, Townsend Scott, Xie Yi Min, Huang Xiaodong, Shen Jianhu, Li Qing
Opt Lett. 2014 Apr 15;39(8):2415-8. doi: 10.1364/OL.39.002415.
We propose a technique capable of designing fishnet metamaterials that have a negative refractive index (NRI) over a broad range in the visible and infrared. The technique relies on optimizing the shape and scale of the fishnet apertures as well as the depth of different layers of the composite. A metamaterial is obtained that exhibits an unbroken 552 nm bandwidth of NRI, covering the entire red and infrared regions. Moreover, two fishnet structures perforated with star-like holes are found to render refractive index negative in the yellow and green spectra.
我们提出了一种能够设计在可见光和红外波段具有宽范围负折射率（NRI）的渔网超材料的技术。该技术依赖于优化渔网孔的形状和尺寸以及复合材料不同层的深度。获得了一种超材料，其具有连续的552纳米负折射率带宽，覆盖整个红色和红外区域。此外，还发现两种带有星状孔的渔网结构在黄色和绿色光谱中呈现负折射率。
