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Stochastic thermodynamics of nanoscale friction
Physical Review E ( IF 2.4 ) Pub Date : 2021-05-03 , DOI: 10.1103/physreve.103.052104
P. C. Torche , P. Nicolini , T. Polcar , O. Hovorka

Developing the thermodynamics of nanoscale friction is needed in a wide range of tribological applications, where the key objective is to optimally control the energy dissipation. Here we show that modern stochastic thermodynamics allows us to interpret the measurements obtained by friction force microscopy, which is the standard tool for investigating the frictional properties of materials, in terms of basic thermodynamics concepts such as fluctuating work and entropy. We show that this allows the identification of the heat produced during the friction process as an unambiguous measure of thermodynamic irreversibility. We have applied this procedure to quantify the heat produced during the frictional sliding in a broad velocity range, and we observe velocity-dependent scaling behavior, which is useful for interpreting the experimental outcomes.

中文翻译:

纳米尺度摩擦的随机热力学

在广泛的摩擦学应用中,需要开发纳米级摩擦的热力学,其主要目标是最佳地控制能量耗散。在这里,我们表明,现代随机热力学使我们能够解释通过摩擦力显微镜获得的测量结果,这是研究材料摩擦特性的标准工具,它涉及诸如波动功和熵之类的基本热力学概念。我们表明,这可以确定摩擦过程中产生的热量,作为热力学不可逆性的明确度量。我们已经应用此程序来量化在较宽的速度范围内的摩擦滑动过程中产生的热量,并且我们观察到了速度相关的缩放行为,这对于解释实验结果很有用。
更新日期:2021-05-03
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