通过多维多重复声声元表面的轨道角运动量和频率依赖的高容量加密全息图通过多维多重复声学元表面
Yong-Qiang Zhou1, Fan Li1, Kai Wu1
1Key Laboratory of Modern Acoustics, MOE, Institute of Acoustics, Department of Physics, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, P. R. China.
Nature communications
|November 27, 2025
概括
这项研究引入了一种新的声学超表面,用于使用轨道角动量 (OAM) 和频率的高容量加密全息. 这种方法可以为先进的声学信息系统实现安全的多通道声场重建.
科学领域:
- 声学 声学 在声学方面
- 超材料是什么?超材料是什么?
- 全息影像的使用方法.
背景情况:
- 声音全息重建复杂的声音场,但面临容量和安全限制.
- 现有的技术难以满足对高容量和安全的声学信息存储和传输的需求.
研究的目的:
- 提出并演示使用轨道角动量 (OAM) 和频率的高容量加密全息机制.
- 克服当前全息技术在容量和安全方面的局限性.
主要方法:
- 开发一个多维多重复声学元表面的开发.
- 使用理论衍生转移函数来定制超表面声响应.
- 同时模式和频谱选择性用于并行图像存储和恢复.
主要成果:
- 对OAM和频率依赖的加密全息图的实验性演示.
- 实现了具有双钥匙安全性的高容量全息信息存储.
- 使用特定的OAM模式和波长组合,成功重建了多个预先设计的图像.
结论:
- 拟议的方法使声学领域的超高容量全息信息系统成为可能.
- 为加密的声音通信提供了一种新方法,增强了保密性.
- 在安全的声学数据传输中为先进应用铺平了道路.
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