Abstract

The problem of calculation of Kapitza contact thermal resistances between different materials is very urgent in view of the development of various nanosystems (computer electronic circuits, thermoelectric devices, quantum cascade lasers, etc.). An improved acoustic mismatch model is proposed for calculating Kapitza conductivities. A drawback of the current model is the use of the Debye approximation. This leads to limitation of the model’s applicability by the low-temperature region. It is shown that consideration of the wave dispersion ensures good agreement between the theoretical and experimental data in a much wider temperature range in comparison with the application of modern models.

中文翻译：

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计算固体之间Kapitza电导的新方法

摘要

鉴于各种纳米系统（计算机电子电路，热电设备，量子级联激光器等）的发展，计算不同材料之间的Kapitza接触热阻的问题非常迫切。提出了一种改进的声学失配模型，用于计算Kapitza电导率。当前模型的缺点是使用德拜近似。这导致模型的适用性受到低温区域的限制。结果表明，与现代模型的应用相比，考虑波的色散可确保在更宽的温度范围内理论和实验数据之间的良好一致性。