Thermal conductance and phonon transmissivity of metal-graphite interfaces
Thermal conductance and phonon transmissivity of metal-graphite interfaces
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DOI：
10.1063/1.3428464
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发表时间：
2010-05-15
影响因子：
3.2
通讯作者：
Chen, Gang
中科院分区：
文献类型：
--
作者：
Schmidt, Aaron J.;Collins, Kimberlee C.;Chen, Gang
在87-300 K温度范围内测量了c轴取向的高度有序热解石墨与几种金属之间的边界热导，发现它们与金属-金刚石界面的热导相似。所获得的值是金属和侧壁的多壁碳纳米管（CNT）之间的热界面电导的指示，因此，具有相关的CNT，石墨烯的热性能的准确表征，以及基于这些结构的复合材料和电子器件的设计和性能。一个修改后的扩散失配模型被用来解释的数据和提取的声子transmittance在界面处。结果表明，金属-石墨粘附力和界面混合效应对边界电导起重要作用。(C)2010年美国物理学会。[doi：10.1063/1.3428464]
The thermal boundary conductances between c-axis oriented highly ordered pyrolytic graphite and several metals have been measured in the temperature range 87-300 K and are found to be similar to those of metal-diamond interfaces. The values obtained are indicative of the thermal interface conductance between metals and the sidewalls of multiwall carbon nanotubes (CNTs) and, therefore, have relevance for the accurate characterization of the thermal properties of CNTs, graphene, and the design and performance of composite materials and electronic devices based on these structures. A modified diffuse mismatch model is used to interpret the data and extract the phonon transmissivity at the interface. The results indicate that metal-graphite adhesion forces and interfacial mixing effects play important roles in determining the boundary conductance. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3428464]