论文标题
在原子上薄层材料中的热效应和自发的摩擦松弛
Thermal effects and spontaneous frictional relaxation in atomically thin layered materials
论文作者
论文摘要
我们研究对原子薄片摩擦特性的热影响。我们基于Prandtl-Tomlinson模型模拟了一个简单的模型，该模型再现了AFM实验中看到的摩擦和强化效果的层依赖性。我们以恒定速度和逆向方向进行调查。我们还调查接触衰老：当滑动完全停止时，接触发生的变化。我们将数值结果与基于Kramers速率的分析计算进行比较。我们发现，比指数接触老化较慢会削弱接触的接触，并且我们期望在实验中可以观察到。我们讨论对滑动和衰老实验的影响。
We study the thermal effects on the frictional properties of atomically thin sheets. We simulate a simple model based on the Prandtl-Tomlinson model that reproduces the layer dependence of friction and strengthening effects seen in AFM experiments. We investigate sliding at constant speed as well as reversing direction. We also investigate contact aging: the changes that occur to the contact when the sliding stops completely. We compare the numerical results to analytical calculations based on Kramers rates. We find that there is a slower than exponential contact aging that weakens the contact and that we expect will be observable in experiments. We discuss the implications for sliding as well as aging experiments.
