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水凝微结构的可配置膨胀性,用于基于结构色彩的成像隐藏/加密

Yunhui Wu¹, Lanlan Liu¹, Guohao Bo¹

¹International Research Center for EM Metamaterials and Institute of Advanced Magnetic Materials, College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou, 310018, PR China. jianzhang@hdu.edu.cn.

|February 13, 2024

概括

这项研究引入了一种新的光学信息加密方法,使用适应湿度的金属-水凝-金属纳米腔. 这种技术使隐藏成像和高密度数据安全性的动态结构色彩变化成为可能.

科学领域:

材料科学材料科学材料科学
光学是什么?光学是什么?光学是什么?
纳米技术纳米技术

背景情况:

动态结构颜色对于隐藏和加密光学信息至关重要.
现有的响应性材料在合成,控制和分辨率方面面临挑战.
金属-凝-金属 (MHM) 纳米腔提供了可调节结构颜色的潜力.

研究的目的:

开发一种基于湿度的新策略,用于基于颜色的结构图像隐藏和加密.
为了利用MHM纳米腔具有可配置的膨胀性,用于动态结构色彩生成.
展示一种使用湿度变化隐藏和揭示图像的方法.

主要方法:

用水凝间层制造多阶段的MHM纳米腔.
通过受控暴露剂量调整水凝膨胀比率 (1.052.08).
开发用于图像隐藏和揭示的双重曝光技术.

主要成果:

通过控制水凝膨胀,在可见光谱中实现了动态结构色彩.
通过配置可膨胀和不可膨胀的水凝像素来证明图像隐藏.
在潮湿条件下使用双曝光方法成功揭示隐藏图像.

结论:

拟议的MHM纳米空洞策略可实现有效的湿度驱动的光学信息隐藏.
可配置的水凝膨胀性允许动态的结构色彩和图像隐藏.
这种方法为高密度光学信息加密应用提供了强大的方法.

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