论文类型：期刊论文
第一作者：王璐
通讯作者：王涛
发表刊物：NANO LETTERS
收录刊物：SCI
所属单位：华中科技大学
刊物所在地：美国
学科门类：工学
一级学科：光学工程
项目来源：国基金
文献类型：J
卷号：23
期号：12
页面范围：5581 - 5587
关键字：all-dielectric; metasurface; structural colors; polarization-tunable colors; encryption; Mie resonance
发表时间：2023-06-01
影响因子：12.0
教研室：武汉光电国家研究中心
摘要：Metasurface-based structural color with high resolutionis promisingfor color printing and encryption. However, achieving tunable structuralcolors in practical applications is challenging owing to the immutabilityafter the fabrication of metasurfaces. Herein, we proposed the polarization-switchabledielectric metasurfaces with full colors. The colorful images canbe switched on/off by controlling the polarization of incident light.For the nanorods metasurfaces, all colors turned to black in the "off"mode because of the near-zero reflection, and the uniform black wasadvantageous for designing encryption applications. For the nanocrossesmetasurfaces, colors reversed in two different "on"modes and images hidden in the "off" mode. With thepolarization-sensitive metasurfaces, a fish-bird image, anoverlapped dual-channel image, and a green-red heart imagewere obtained, respectively. The demonstrations can be applied todynamic displays, optical cryptography, multichannel imaging, andoptical data storage.