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可调节的近场辐射热传输在涂上石墨烯的磁光元表面之间

Bo Zhang¹, Kun Zhang¹, Lu Lu²

¹State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China.

Langmuir : the ACS journal of surfaces and colloids

|July 16, 2024

概括

这项研究探讨了使用磁光超表面控制近场辐射热传递 (NFRHT) 的方法. 应用磁场会改变传热光谱,并将流量调节增加8倍以上.

科学领域:

纳米光子学纳米光子学
凝聚物质物理学凝聚物质物理学
热力工程是热力工程中的一个.

背景情况:

超表面可以精确控制近场辐射热传递 (NFRHT).
磁光学材料在磁场下提供可调节的电磁反应.

研究的目的:

从理论上研究异型磁光元表面之间的NFRHT的控制.
探索磁场诱导的传热调制机制.

主要方法:

在包含石墨烯和InSb.的磁光元表面中传热的理论建模.
分析表面电磁模式及其在外部磁场下的相互作用.

主要成果:

由于模式相互作用,磁场会诱导从双频段到三频段的热传输光谱的过渡.
磁场调节传输波向量,显著改变辐射热量流.
结合主动 (磁场) 和被动 (超表面设计) 控制,与平面配置相比,将热流调节提高了8倍以上.
磁场在光子能量分布中放大了异质性.

结论:

这项工作提供了一种灵活调节NFRHT的途径,使用组合的主动和被动调节.
这些发现为多带信息传输和改进的能量转换设备开辟了可能性.

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