频谱选择性热发射器用于高效的红外隐形,与微波吸收兼容
Yufei Ge1, Liang Peng2, Yongqiang Pang3
1Science and Technology on Advanced Ceramic Fibers and Composites Laboratory, College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, P. R. China.
ACS applied materials & interfaces
|July 4, 2025
概括
研究人员设计了一种光谱选择性热发射器,用于先进的红外隐形. 这种材料抑制了排放性和温度,减少了用于增强隐形能力的热信号.
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:
- 具有热红外光谱选择性的材料对于热光伏,辐射冷却和红外隐形等应用至关重要.
- 现有的红外隐形技术通常依赖于低排放性的材料,这些材料可以通过光谱工程进一步改进.
研究的目的:
- 设计和演示一种光谱选择性热发射器,以实现高效的红外隐形.
- 为了实现同时抑制排放率和温度,以提高热特征的减少.
主要方法:
- 利用化的内在光谱特性与用于光谱工程的全介电式多层带通波器相结合.
- 制造了一种能够从环境温度到400°C工作的选择性热发射器.
- 集成介电选择性热发射器与微波吸收器,以实现红外和雷达兼容的隐形.
主要成果:
- 发射器在5-8μm非大气窗口中表现出高的发射率 (ε = 0.78),用于散热,在大气窗口中表现出低的发射率 (ε = 0.29在3-5μm, ε = 0.26在8-14μm).
- 通过增强散热,实现了8.2°C的显著温度降低.
- 与传统的低排放性材料相比,证明了优越的红外隐形性能.
结论:
- 开发的光谱选择性热发射器有效地减少红外隐形应用的热信号.
- 完全介电结构为工程选择性排放特性提供了灵活而简单的解决方案.
- 与微波吸收器的集成为兼容红外和雷达隐形解决方案提供了一条道路.
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