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Acoustic mismatch model for thermal contact conductance of van der Waals contacts under static force
Nanoscale and Microscale Thermophysical Engineering ( IF 4.1 ) Pub Date : 2017-11-30 , DOI: 10.1080/15567265.2017.1391905
Ravi Prasher 1, 2
Affiliation  

ABSTRACT Van der Waals interfaces play a major role in technology today. Thermal transport in material systems with van der Waals interfaces is mainly limited by the contact conductance. Although the effects of static force, such as pressure or the electrostatic part of hydrogen bonds, on the thermal contact conductance of van der Waals interfaces have been examined in a few studies, the focus was either on numerical simulation using techniques such as molecular dynamics or on experimental investigation. In this article, an analytical model of thermal contact conductance that accounts for the effects of static force and adhesion energy is presented. The application of static forces is found to cause a decrease in the intermolecular distance, which leads to increased interatomic forces across the interfaces and thus higher thermal conductance. The model is in good agreement with experimental data on the effect of pressure on thermal conductance collected by Gotsmann and Lantz (Nature Materials, Vol. 12, p. 59–65, 2012).

中文翻译:

静力作用下范德华接触热接触电导的声学失配模型

摘要 Van der Waals 接口在当今的技术中发挥着重要作用。具有范德华界面的材料系统中的热传输主要受接触电导的限制。尽管在一些研究中已经研究了静力(例如压力或氢键的静电部分)对范德华界面热接触电导的影响,但重点是使用分子动力学等技术进行数值模拟或在实验调查上。在本文中,介绍了一种考虑静力和粘附能影响的热接触电导分析模型。发现静力的应用会导致分子间距离的减小,从而导致跨界面的原子间力增加,从而导致更高的热导率。
更新日期:2017-11-30
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