论文标题
涡轮多层石墨烯中的热传输
Thermal Transport in Turbostratic Multilayer Graphene
论文作者
论文摘要
二维材料层之间的扭角存在对其物理特性有深远的影响。 TurboStratic多层石墨烯是一个包含旋转堆叠故障分布的系统，这些接口也具有可变的扭角。在这项工作中，我们研究了涡轮质t层单层石墨烯含量对缺陷密度较低的无缺陷多层石墨烯系统的平面导热率的影响。详细的拉曼模式分析用于量化系统中涡轮质单层石墨烯的含量，同时从所选区域电子衍射研究中获得补充见解。使用有限元分析模拟支持的Raman Optothermal技术研究了这些系统中的热传输。 AB堆叠石墨烯的导热率减少了2.59倍的涡轮质单层石墨烯含量，而涡轮质含量为19％的降低是按大小的订单降低的。导热率广泛地遵守关系，$κ$ $ \ propto $ exp（-f），其中f是系统中涡轮增压单层石墨烯含量的比例
The presence of twist angles between layers of two-dimensional materials has a profound impact on their physical properties. Turbostratic multilayer graphene is a system containing a distribution of rotational stacking faults, and these interfaces also have variable twist angles. In this work, we examine the influence of turbostratic single-layer graphene content on the in-plane thermal conductivity of a defect free multilayer graphene system with low defect density. Detailed Raman mode analysis is used to quantify the content of turbostratic single-layer graphene in the system while complementing insight is obtained from selected area electron diffraction studies. Thermal transport in these systems is investigated with Raman optothermal technique supported with finite element analysis simulations. Thermal conductivity of AB-stacked graphene diminishes by a factor of 2.59 for 1% of turbostratic single-layer graphene content, while the decrease at 19% turbostratic content is by an order in magnitude. Thermal conductivity broadly obeys the relation, $κ$ $\propto$ exp(-F), where F is the fraction of turbostratic single-layer graphene content in the system
