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通过使用中红外双层元表面进行增强的远场连贯热辐射

Sichao Li¹, Robert E Simpson², Sunmi Shin¹

¹Department of Mechanical Engineering, Collage of Design and Engineering, National University of Singapore, 9 Engineering Drive 1, 117575, Singapore. mpeshin@nus.edu.sg.

|August 9, 2023

概括

研究人员量化了纳米丝带中的热传递,揭示了增强的热辐射. 这种增强,驱动着抗氧化 telluride 中的极子热传递,在中红外光学和热工程中开辟了新的途径.

科学领域:

在纳米尺度的热传输.
中红外光学是中红外光学.
固态物理固态物理

背景情况:

经典的热源遵循普朗克定律,但低波长的热源使超普朗克辐射成为可能.
在专门的材料中合光子和光学声子可以量身定制热辐射.
了解这些新型系统中的热传递仍然是一个挑战.

研究的目的:

量化辐射和导热传递机制在抗氧化 Telluride/二氧化 Nanoribbon 结构.
调查极子热传递在增强热发射中的作用.
为了弥合中红外光学和热工程之间的差距.

主要方法:

利用一种新的测量平台来量化热信号.
分离和量化辐射和导热传输.
通过从100到400K的朱尔加热来刺激热梯度.

主要成果:

证明,与裸体二氧化相比,抗胺化/二氧化纳米带的热辐射增强了3.5倍.
将排放增强归因于极子热传递.
证实了材料在中红外频率的巨大无损介电导电性的作用.

结论:

极子热传递显著增强纳米结构中的热辐射.
胺 telluride 是一个有前途的材料,用于定制的中红外热发射.
这项工作为纳米级传热现象提供了关键的见解.

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