灵感来自布罗克索姆的二进制元结构用于像素对像素的热签名控制
Zhuo Li1, Lin Wang2,3, Xiu Liu1
1Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, PA 15213, USA.
Science advances
|March 1, 2024
概括
研究人员创建了双元元结构,灵感来自叶虫的体,用于微观的热签名控制. 这些"像素双胞胎"可以实现二进制热显示,同时保持视觉隐藏,推进光学安全和数据加密.
科学领域:
- 超材料科学 超材料科学
- 纳米光子学 纳米光子学
- 热力工程是热力工程中的一个.
背景情况:
- 微尺度的热签名控制很难与不连贯的来源.
- 现有的等离子和相变材料有其局限性.
研究的目的:
- 在微观尺度上开发像素化热签名控制.
- 创建由自然结构启发的二元元元结构,用于热信息显示和伪装.
主要方法:
- 设计的二进制元结构作为"像素双胞胎",模仿叶虫的brochosomes.
- 为了控制红外辐射和在可见光谱中的伪装而设计的表面形态.
- 在热激发时利用元结构的自我发射特性.
主要成果:
- 像素双胞胎表现出明显的红外发射率,使"0-1"二进制热状态成为可能.
- 超结构表现出类似的可见光散射,确保视觉无法区分.
- 功能依赖于结构,而不是依赖于材料的允许性,与传统方法不同.
结论:
- 新型二进制元结构为微尺度热签名控制提供了一个系统解决方案.
- 该技术提供可见伪装和红外显示功能.
- 对光学安全,防伪和数据加密有重大影响.
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