聚合物
材料科学
分子动力学
化学物理
表面光洁度
表面粗糙度
热的
界面热阻
链条(单位)
比例(比率)
热阻
固体表面
动力学(音乐)
长度刻度
曲面(拓扑)
化学工程
纳米技术
复合材料
热力学
化学
计算化学
机械
物理
几何学
数学
天文
量子力学
声学
工程类
作者
Qing-Yao Luo,Donatas Surblys,Hiroki Matsubara,Taku Ohara
标识
DOI:10.1080/00268976.2024.2321311
摘要
Understanding the role of surface morphology and molecular structure interface thermal transport is essential for designing thermal management materials. In the present work, models of solid–liquid interfaces were created by placing liquid n-alkane between two platinum crystals. The effect of different levels of crystal surface roughness–flat, small, and large-scale grooves–and polymer chain lengths, under varying solid–liquid affinity, on the interface thermal resistance (ITR) were assessed using non-equilibrium molecular dynamics simulations. The overall trend confirmed that grooved surfaces have higher ITR than flat surfaces at low affinity, and lower ITR values were observed at high affinity. Large grooves enabled more favourable polymer orientations than those of small grooves, resulting in a smaller ITR. However, long chains did not facilitate heat transfer normal to the interface because they preferentially aligned parallel to it. For efficient heat transfer, a balance between the roughness scale and polymer length must be considered.
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