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一种光学透明的超材料吸收器,具有可调节的吸收带宽和低红外发射率

Qi Chang¹, Jinzu Ji¹, Wenxing Wu¹

¹School of Aeronautic Science and Engineering, Beihang University, Beijing 100191, China.

Materials (Basel, Switzerland)

|December 9, 2023

概括

本研究引入了一种透明的超材料吸收器 (MMA),具有可调节的吸收带宽和低红外发射率. 该设备提供可调节的雷达吸收频率和最小的热 signature,适合高级应用.

科学领域:

材料科学材料科学材料科学
电磁学电磁学电磁学电磁学
光学是什么?光学是什么?

背景情况:

超材料吸收器 (MMA) 对于电磁波管理至关重要.
在透明的MMA中同时实现可调节的吸收带宽和低红外 (IR) 发射率是一个重大挑战.

研究的目的:

提出并展示一种新的透明元材料吸收器 (MMA),具有可调节的吸收带宽和低红外辐射率.
为了研究吸收特性背后的物理机制.
通过模拟和实验测量来验证设计.

主要方法:

一个分层的MMA的制造,包括聚乙烯基铁酸盐 (PET) 基板上的-锡氧化物 (ITO) 图案,红外屏蔽层 (IRSL),雷达吸收层 (RALs) 和可调的空气/水层.
使用等效电路模型 (ECM) 来分析吸收机制.
制造样本的实验性表征,以验证性能.

主要成果:

通过调整水层厚度,MMA表现出可调节的90%吸收带宽,从6.4-11.3 GHz到12.7-20.6 GHz.
该设备保持良好的极化和角度稳定性.
获得了理论上低的IR发射率,约为0.24.
实验结果与模拟预测结果非常相匹配.

结论:

拟议的透明MMA成功地集成了可调节的吸收带宽与低IR发射率.
该设计显示了隐形玻璃和多功能雷达房的应用潜力.
该ECM为吸收物理提供了有价值的见解.

关键词:

低红外辐射率的低红外辐射率.超材料吸收器 (MMA) 是一种吸收器.在光学上是透明的.可调的可调的

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