论文标题
在二维材料中的弹道，扩散和流体动力声子传输的热量
Heat vortexes of ballistic, diffusive and hydrodynamic phonon transport in two-dimensional materials
论文作者
论文摘要
在这项工作中，根据Callaway模型下的声子Boltzmann传输方程（BTE）研究了二维多孔或色带结构中的热量涡旋。首先，使用频率无关的假设研究了正常（N）散射和电阻（R）散射的单独热效应。然后研究石墨烯中的热量涡旋作为特定示例。发现热量可以出现在弹道（稀有的R/N散射）和流体动力学（N散射占主导地位）方面，但在扩散（R散射占主导地位）方面消失。只要没有足够的R散射，热量就可以在当前的模拟中出现。
In this work, the heat vortexes in two-dimensional porous or ribbon structures are investigated based on the phonon Boltzmann transport equation (BTE) under the Callaway model. First, the separate thermal effects of normal (N) scattering and resistive (R) scattering are investigated with frequency-independent assumptions. And then the heat vortexes in graphene are studied as a specific example. It is found that the heat vortexes can appear in both ballistic (rare R/N scattering) and hydrodynamic (N scattering dominates) regimes but disappear in the diffusive (R scattering dominates) regime. As long as there is not sufficient R scattering, the heat vortexes can appear in present simulations.
