研究目的
Investigating the simultaneous full-color printing and holography enabled by centimeter-scale plasmonic metasurfaces for applications in anticounterfeiting, information security, and high-density optical storage.
研究成果
The proposed ultrathin plasmonic metasurfaces enable mode switching between full-color printing and multichannel holography, offering high security, fabrication friendliness, and potential for mass production. This design bridges the gap between theoretical investigations and daily-life applications in anticounterfeiting and information security.
研究不足
The study is limited by the fabrication tolerance and the complexity of encoding multiple types of information into a single metamark. The efficiency in the hologram mode is influenced by the brightness control of the printing image.
1:Experimental Design and Method Selection:
The study employs plasmonic metasurfaces to manipulate light's amplitude, phase, and polarization for simultaneous full-color printing and holography.
2:Sample Selection and Data Sources:
Centimeter-scale plasmonic metasurfaces are fabricated and characterized.
3:List of Experimental Equipment and Materials:
Includes a tunable supercontinuum laser source, achromatic Fourier lens, charge-coupled device (CCD), and power meter for characterizations.
4:Experimental Procedures and Operational Workflow:
Fabrication involves thermal evaporation, spin-coating, SP lithography, and electron beam evaporation. Characterizations include optical microscope imaging and holographic image capturing under coherent laser illumination.
5:Data Analysis Methods:
Efficiency characterizations and image quality assessments are performed.
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