Nanoscale radiative thermal switching via multi-body effects.,Nature Nanotechnology

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Nanoscale radiative thermal switching via multi-body effects.
Nature Nanotechnology ( IF 38.1 ) Pub Date : 2019-12-23 , DOI: 10.1038/s41565-019-0595-7
Dakotah Thompson ₁ , Linxiao Zhu ₁ , Edgar Meyhofer ₁ , Pramod Reddy _{1,

2}

Affiliation

Control of thermal transport at the nanoscale is of great current interest for creating novel thermal logic and energy conversion devices. Recent experimental studies have demonstrated that radiative heat transfer between macroscopic objects separated by nanogaps, or between nanostructures located in the far-field of each other, can exceed the blackbody limit. Here, we show that the radiative heat transfer between two coplanar SiN membranes can be modulated by factors as large as five by bringing a third planar object into close proximity of the membranes. Numerical modelling reveals that this modulation is due to a modification of guided modes (supported in the SiN nanomembranes) by evanescent interactions with the third object. This multi-body effect could offer an efficient pathway for active control of heat currents at the nanoscale.

中文翻译：

通过多体效应实现纳米级辐射热切换。

为了创建新颖的热逻辑和能量转换装置，在纳米尺度上控制热传输是当前的巨大兴趣。最近的实验研究表明，由纳米间隙分隔的宏观物体之间或位于彼此远场的纳米结构之间的辐射热传递可以超过黑体极限。在这里，我们表明，通过使第三个平面物体紧贴膜，可以使两个共面SiN膜之间的辐射热传递受到5倍因子的调节。数值模拟表明，这种调制是由于与第三物体的e逝相互作用对引导模式（在SiN纳米膜中支持）的修饰。这种多体效应可为主动控制纳米尺度的热流提供有效途径。

更新日期：2019-12-23

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