一个Tribandmetasurface覆盖可见,中波红外和长波红外光学安全的光学安全
Qixiang Chen1, Xuemei Huang2, Zezhao Ju3
1School of Energy and Environment, Southeast University, Nanjing, Jiangsu 210096, China.
Nano letters
|March 4, 2025
概括
研究人员开发了一种新的三带元表面,用于先进的光学安全. 这项技术使可见,中波红外和长波红外频段的同步加密成为可能,增强了防伪措施.
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
- 信息安全 信息安全
背景情况:
- 光学安全方法正在进步,可见 (VIS) 和红外 (IR) 频段的双频段加密已建立.
- 在VIS,中波红外 (MWIR) 和长波红外 (LWIR) 频段中同步的光学安全性是一个重大挑战.
研究的目的:
- 在VIS,MWIR和LWIR频段中实验演示三带超表面,用于跨VIS,MWIR和LWIR频段的同步光学安全.
- 探索用于增强光学安全和防伪应用的新方法.
主要方法:
- 三带元表面的制造和特征.
- 在VIS成像中使用结构色彩.
- 在MWIR和LWIR成像中使用选择性发射率结构.
- 信息编码和加密能力的验证.
主要成果:
- 成功演示了覆盖VIS,MWIR和LWIR频段的三带超表面.
- 通过结构色彩实现的VIS成像.
- 通过选择性发射率实现的MWIR/LWIR成像 (MWIR/LWIR:分别为0.81/0.17和0.21/0.83).
- 在VIS频段内完全隐藏MWIR和LWIR信息.
- 复杂信息编码和误导信息的加密的验证.
结论:
- 三带超表面为跨多个光谱频段的同步光学安全提供了一个新的范式.
- 这项技术在防伪和热伪装应用中具有显著的潜力.
- 介绍了先进光学加密和信息安全的新方法.
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