论文标题
ge $ _2 $ sb $ _2 $ te $ _5 $ fishnnet metasurfaces的光学衍射
Optical diffraction from Ge$_2$Sb$_2$Te$_5$ fishnet metasurfaces
论文作者
论文摘要
We report the creation of Ge$_2$Sb$_2$Te$_5$ metasurfaces on sapphire substrates by the ablation method and the study of their structural properties by scanning electron microscopy (SEM), atomic force microscopy (AFM), and optical diffraction.主要的重点是光学技术，该技术归结为在屏幕上获得明亮的LAUE衍射模式，用肉眼观察它们，并分析衍射反射的精细结构。已经证明，在一个简单的光学实验中，可以评估构造的跨膜的质量，确定结构对称性，并确定微米大小元面的结构元素和晶格常数的数量。通过与SEM和AFM方法的研究结果进行比较，可以证实光学技术的准确性。
We report the creation of Ge$_2$Sb$_2$Te$_5$ metasurfaces on sapphire substrates by the ablation method and the study of their structural properties by scanning electron microscopy (SEM), atomic force microscopy (AFM), and optical diffraction. The main emphasis is on the optical technique, which boils down to obtaining bright Laue diffraction patterns on a screen, observing them with the naked eye, and analyzing the fine structure of diffraction reflections. It has been demonstrated that in one simple optical experiment it is possible to assess the quality of fabricated metasurfaces, determine the structure symmetry, and, moreover, determine the number of structural elements and lattice constants of the micron-sized metasurface. The accuracy of the optical technique is confirmed by comparison with the results of studies by SEM and AFM methods.
