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CSpace
Tri-channel metasurface for watermarked structural- color nanoprinting and holographic imaging
Zhao, Naixuan1; Li, Zile1,2; Zhu, Guodong3; Li, Jiaxin1; Deng, Liangui1,2; Dai, Qi1,2; Zhang, Weiguo3; He, Zhixue2; Zheng, Guoxing1,2,4
2022-10-10
摘要Structural-color nanoprinting, which can generate vivid colors with spatial resolution at subwavelength level, possesses potential market in optical anticounterfeiting and information encryption. Herein, we propose an ultracompact metasurface with a single-cell design strategy to establish three independent information channels for simultaneous watermarked structural-color nanoprinting and holographic imaging. Dual-channel spectrum manipulation and single-channel phase manipulation are combined together by elaborately introducing the orientation degeneracy into the design of variable dielectric nanobricks. Hence, a structural-color nanoprinting image covered with polarization-dependent watermarks and a holographic image can be respectively generated under different decoded environments. The proposed metasurface shows a flexible method for tri-channel image display with high information capacity, and exhibits dual-mode anticounterfeiting with double safeguards, i.e., polarization-controlled watermarks and a farfield holographic image. This study provides a feasible route to develop multifunctional metasurfaces for applications including optical anticounterfeiting, information encryption and security, information multiplexing, etc.
DOI10.1364/OE.472789
发表期刊OPTICS EXPRESS
ISSN1094-4087
卷号30期号:21页码:37554-37565
通讯作者Dai, Qi(daiqiiu@whu.edu.cn) ; Zhang, Weiguo(zwg@cigit.ac.cn)
收录类别SCI
WOS记录号WOS:000901194800001
语种英语