论文标题
热矫正理论
Perturbation theory of thermal rectification
论文作者
论文摘要
很长一段时间以来，已经研究了热通量的热矫正。但是，仍然缺乏通用和系统的物理描述。在这封信中，开发了热整流的扰动理论，该理论提供了热整流比的分析公式。它揭示了热整流比和温度差之间的线性关系。此外，热整流的尺寸依赖性依赖于导热率的特定形式。此外，在以前的文献中有几种实验和数值观察得到了很好的解释。该理论可以适用于可以得出可区分有效热导率的任何系统，并且有助于公布一般原理以进行热整流。
Thermal rectification which is a diode-like behavior of heat flux has been studied over a long time. However, a universal and systematic physical description is still lacking. In this letter, a perturbation theory of thermal rectification is developed, which provides an analytical formula of the thermal rectification ratio. It reveals the linear relationship between the thermal rectification ratio and temperature difference. Furthermore, the size-dependence of the thermal rectification relies on the specific form of the thermal conductivity. In addition, several experimental and numerical observations in previous literatures are well explained. This theory can be applicable to any system in which a differentiable effective thermal conductivity can be derived, and is helpful to unveil general principle for thermal rectification.
