Multiplexed Metasurfaces for High-Capacity Printing Imaging

• 作者: Haofei Xu Yaqin Zheng Yuelin Chen Zhang-Kai Zhou Zhenyu Fang
• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2020,（7）
• 所属期刊栏目: CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES
• 页码范围: 120-124
• 页数: 5页
• 语种: 英文
• DOI: 10.1088/0256-307X/37/7/077801

摘要

We successfully overcome the problem of cross-talk in multiplexed metasurface design and realize the multiplexed metasurface with five printing images in both theoretical and experimental aspects,by employing the coherent pixel design considering coherent superposition of all the sub-elements.Compared with most previous studies where the integrated printing images were usually no more than three,our study shows obvious improvement.More importantly,in our approach all the sub-elements,which were crystalline silicon nanobricks with the size of 320 × 80 × 230nm3,were arranged in a square space of 1.45 × 1.45μm2 following the closest packing way,enabling our multiplexed metasurface to have a potential of effective physical information capacity of printing image reaching the optical diffraction limit.Our study not only enlarges the information capacity of metasurfaces by expanding the integrated number of printing image in one metasurface,but also can promote metasurface applications in various fields such as information storage and encoding.