| 基于分子动力学对超晶格结构界面热阻的模拟研究 |
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| 引用本文： | 张兴丽,孙兆伟.基于分子动力学对超晶格结构界面热阻的模拟研究[J].航空材料学报,2011,31(4). |
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| 作者姓名： | 张兴丽 孙兆伟 |
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| 作者单位： | 哈尔滨工业大学卫星技术工程研究所,哈尔滨,150001 |
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| 基金项目： | 长江学者和创新团队发展计划项目(IRT0520); 国家973基础研究(5131201) |
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| 摘 要： | 利用非平衡分子动力学方法对S i/Ge超晶格结构的界面热阻进行模拟。模拟结果表明最靠近高温热浴的界面热阻控制整个结构的热传导性能,并且超晶格结构的周期长度以及温度等因素也会对界面热阻产生不同影响。随着周期长度的增大,界面热阻越来越小,超晶格结构的导热能力增强。受声子非弹性散射机制的影响,界面热阻随温度的升高也逐渐减小。
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| 关 键 词： | 分子动力学 超晶格 界面热阻 |
Molecular Dynamics Simulation on Thermal Boundary Resistance of Superlattice Structure |
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| ZHANG Xing-li,SUN Zhao-wei.Molecular Dynamics Simulation on Thermal Boundary Resistance of Superlattice Structure[J].Journal of Aeronautical Materials,2011,31(4). |
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| Authors: | ZHANG Xing-li SUN Zhao-wei |
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| Institution: | ZHANG Xing-li,SUN Zhao-wei(Research Center of Satellite Technology,Harbin Institute Technology,Harbin 150001,China) |
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| Abstract: | Non-equilibrium molecular dynamics(NEMD) simulations were performed to calculate the interface thermal boundary resistance of Si/Ge superlattice structure.The simulation results show that the thermal boundary resistances of interfaces closest to the hot bath are likely to control the heat transport capability of the structure system.The effects of period thickness and temperature on thermal boundary resistances were also obtained by the simulation.The thermal boundary resistances decrease with the increase ... |
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| Keywords: | molecular dynamics superlattice structure thermal boundary resistance |
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