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贝叶斯优化高值宽带定向热发射器

Erwei Gui^1,2,3, Guangji Lian^2,3, Shenghao Jin^2,3

¹Institute of Engineering Thermophysics, School of Mechanical Engineering Shanghai Jiao Tong University Shanghai China.

Nanophotonics (Berlin, Germany)

|March 9, 2026

概括

研究人员开发了一种新的宽带定向热发射器,使用较少的epsilon-near-zero层. 这种优化的结构可以提高红外伪装和辐射冷却应用的性能.

科学领域:

纳米光子和元材料
热力工程是热力工程中的一个.
红外技术红外技术

背景情况:

宽带定向热发射器 (BDTE) 在红外伪装和辐射冷却等应用中至关重要.
目前的BDTE结构往往需要大量的epsilon-near-zero (ENZ) 层,并且缺乏优化的厚度,限制了它们的性能.
在BDTE中实现更广泛的光谱覆盖率和更高的优点 (FOM) 仍然是一个挑战.

研究的目的:

设计和优化高FOM BDTE结构,减少ENZ层的数量.
扩大BDTE的运营带宽.
探索优化BDTE结构在红外信息加密和欺骗方面的潜力.

主要方法:

利用贝叶斯优化来设计一个BDTE结构,使用更少的ENZ层.
与介电间隔器的布鲁斯特效应相结合的近极 (ENP) 共振.
对设计结构的性能进行实验验证.

主要成果:

实现了2微米的BDTE带宽扩展 (从7.9-12微米到7.9-14微米).
实现了一个优化的结构,平均定向发射率为0.94,FOM为8.087.
展示了用于红外信息加密和欺骗的有图案的设备,具有取决于角度的红外信号.

结论:

与现有方法相比,开发的BDTE结构在较少的层次上提供了卓越的性能.
整合ENP共振和布鲁斯特效应有效地扩大了发射频谱.
这些发现为先进的红外信息技术和优化热发射器设计提供了途径.

关键词:

贝叶斯优化是贝叶斯的优化.定向热排放的方向性热排放.埃普西隆接近零 (ENZ)红外欺骗方式

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