Chirality and thickness-dependent thermal conductivity of few-layer graphene: A molecular dynamics study
Chirality and thickness-dependent thermal conductivity of few-layer graphene: A molecular dynamics study
复制标题
少层石墨烯的手性和厚度依赖性热导率：分子动力学研究
DOI：
10.1063/1.3567415
复制
发表时间：
2011-03-14
影响因子：
4
通讯作者：
Zheng, Dong-Qin
中科院分区：
文献类型：
--
作者：
Zhong, Wei-Rong;Zhang, Mao-Ping;Zheng, Dong-Qin
采用非平衡分子动力学方法研究了石墨烯纳米带（1 至 8 个原子平面的层）的热导率。我们提出，室温导热系数随着少层石墨烯的层数单调衰减。锯齿状石墨烯的导热性能的优势仅在高温区域有效，而在多层情况下消失。这解释了高频声子谱收缩引起了热导率的变化。另据报道，单层石墨烯比多层石墨烯具有更好的弹道传输性能。 (C) 2011 年美国物理研究所。 [doi:10.1063/1.3567415]
The thermal conductivity of graphene nanoribbons (layer from 1 to 8 atomic planes) is investigated by using the nonequilibrium molecular dynamics method. We present that the room-temperature thermal conductivity decays monotonically with the number of the layers in few-layer graphene. The superiority of zigzag graphene in thermal conductivity is only available in high temperature region and disappears in multilayer case. It is explained that the phonon spectral shrink in high frequency induces the change in thermal conductivity. It is also reported that single-layer graphene has better ballistic transport property than the multilayer graphene. (C) 2011 American Institute of Physics. [doi:10.1063/1.3567415]