On the dependence of the thermal conductivity of width-modulated nanowires on the number of modulations
On the dependence of the thermal conductivity of width-modulated nanowires on the number of modulations
复制标题
宽度调制纳米线的热导率对调制次数的依赖性
DOI：
10.1088/1742-6596/785/1/012011
复制
发表时间：
2017
期刊：
影响因子：
--
通讯作者：
D. Lacroix
中科院分区：
文献类型：
--
作者：
X. Zianni;K. Termentzidis;D. Lacroix
我们之前对宽度调制纳米线的热导率的蒙特卡罗模拟表明热导率κ相对于未调制纳米线的热导率的降低有两个不同的依赖性：（i）在多个收缩的情况下，κ与纳米线的transmittance成比例，（ii）在单个收缩的情况下，κ由弹道收缩阻力决定。在这里，我们报告两个政权之间的过渡。我们讨论了宽度调制的纳米线的热导率作为调制的数量的函数。现象学已被推导来解释MC模拟。
Our previous Monte Carlo simulations on the thermal conductivity of width-modulated nanowires indicated two distinct dependences of the decrease of the thermal conductivity κ relative to that of the non-modulated nanowire: (i) in the case of multiple constrictions κ scales with the nanowire transmissivity, (ii) in the case of a single constriction κ is determined by the ballistic constriction resistance. Here, we report on the transition between the two regimes. We discuss the thermal conductivity of width modulated nanowires as a function of the number of modulations. Phenomenology has been derived to interpret the MC simulations.