论文标题
玻璃石墨烯的结构放松时间和动态剪切模量
Structural Relaxation Time and Dynamic Shear Modulus of Glassy Graphene
论文作者
论文摘要
从理论上讲，我们在宽阔的温度下研究了玻璃石墨烯的玻璃过渡行为，在该温度范围内，这种无定形石墨烯被描述为硬球体。粒子的动态停滞可能是由与其最近的邻居和周围流体颗粒的相互作用引起的。该假设使我们能够分析局部和集体粒子迁移率的作用。我们计算结构放松时间和动态剪切模量，动态脆弱性和玻璃过渡温度的温度依赖性。另外，对这些物理数量之间的相关性进行了全面讨论。我们的理论计算与最近的模拟和Dyre的推式模型非常吻合。
We theoretically investigate glass transition behaviors of the glassy graphene in a wide range of temperature, where this amorphous graphene is described as a hard-sphere fluid. The dynamic arrest of a particle is assumingly caused by interactions with its nearest neighbors and surrounding fluid particles. The assumption allows us to analyze roles of local and collective particle mobility. We calculate the temperature dependence of structural relaxation time and dynamic shear modulus, the dynamic fragility, and the glass transition temperature. In addition, correlations between these physical quantities are comprehensively discussed. Our theoretical calculations agree quantitatively well with recent simulations and Dyre's shoving model.
