论文标题
两个紧密分离的固体之间的传导辐射耦合
Conduction-radiation coupling between two closely-separated solids
论文作者
论文摘要
在Polder和Van Hove引入的两个紧密间隔物体之间的辐射热交换理论中，假定材料内部的热载体与跨越分离间隙的光子之间没有相互作用。在这里，我们通过开发一般理论来释放这种约束，以描述两个任意尺寸的固体之间的传导辐射耦合，这些固体由下波长分离间隙隔开。我们表明，由于耦合与传导引起的温度曲线，在纳米距离处的两个平行板之间交换的辐射热通量可能比常规理论预测的一个数量级要小几个数量级。这些结果可能在纳米级热管理，近场固态冷却和纳米级能量转换的领域具有重要意义。
In the theory of radiative heat exchanges between two closely-spaced bodies introduced by Polder and van Hove, no interplay between the heat carriers inside the materials and the photons crossing the separation gap is assumed. Here we release this constraint by developing a general theory to describe the conduction-radiation coupling between two solids of arbitrary size separated by a subwavelength separation gap. We show that, as a result of the temperature profile induced by the coupling with conduction, the radiative heat flux exchanged between two parallel slabs at nanometric distances can be several orders of magnitude smaller than the one predicted by the conventional theory. These results could have important implications in the fields of nanoscale thermal management, near-field solid-state cooling and nanoscale energy conversion.
