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彩色打印和加密与极化可切换结构颜色在全介电元表面的全介电元表面

Lu Wang¹, Tao Wang¹, Ruoqin Yan¹

¹Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China.

|June 6, 2023

概括

研究人员开发了可偏振切换的介电元表面,用于可调节的结构颜色. 这些超表面能够实现动态色彩切换,并为先进的光学加密和显示技术提供潜力.

科学领域:

光学和光子学在光学和光子学.
材料科学材料科学材料科学
纳米技术纳米技术

背景情况:

基于metasurface的结构颜色为打印和加密等应用提供了高分辨率.
一个关键的挑战是实现可调节的结构颜色,这是由于制造的超表面的固定性.

研究的目的:

提出和演示可偏振切换的介电超表面,能够产生完整的,可调节的结构颜色.
为了使彩色图像能够使用光极化控制来动态打开和关闭.

主要方法:

使用纳米棒和纳米交叉来制造介电元面.
对偏振依赖的反射和颜色切换属性的研究.
图像切换,颜色反转和隐藏图像显示的演示.

主要成果:

在介电元面中实现了极化切换的全结构颜色.
通过控制落灯偏光,展示了彩色图像的"打开"和"关闭"模式.
在"关闭"状态下观察到纳米交叉元面的颜色反转和在"关闭"状态下纳米基层元面的近零反射 (黑色).

结论:

可转换的极化介电元表面为动态结构色彩应用提供了途径.
开发的超表面适用于光学加密,动态显示,多通道成像和光学数据存储.

关键词:

更多的共振力.完全消耗电的地表变压器进行加密,加密.两极化调节的颜色可以调节.结构颜色结构颜色

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