Resonance Enhancement of Atomic-Scale Friction: Nontrivial Role of Damping

IF 3.3 3区工程技术 Q2 ENGINEERING, CHEMICAL

Tribology Letters Pub Date : 2025-10-14 DOI:10.1007/s11249-025-02078-w

S. Yu. Krylov

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Abstract

Autoparametric resonance in a combined contact (tip apex)–driving-spring (cantilever) system, that is responsible for the appearance of multiple peaks in friction as a function of scanning velocity, is investigated in a wide range of the possible system damping. The role of cantilever damping, being practically inessential in conventional stick–slip regime at lower velocities, is shown to be crucial for the appearance of friction force peaks at the resonant and quasi-resonant velocities. With changing damping, the evolution of different peaks turns out to be nontrivial, that is related with an unusual manifestation of double slips of the tip and memory effects. Relative value of the main force peaks as functions of damping factor are non-monotonous with maximum, which can reach several tens percent, depending on the system parameters and temperature. Such a strong resonance enhancement of energy dissipation is likely to occur in practical systems, where damping of driving spring can be significant, in contrast to nearly ideal cantilevers used in AFM experiments.

Graphical Abstract

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原子尺度摩擦的共振增强：阻尼的重要作用

结合接触（尖端）-驱动-弹簧（悬臂）系统的自参数共振，负责出现多峰的摩擦作为扫描速度的函数，研究了在广泛的可能的系统阻尼范围。悬臂阻尼的作用，实际上是不重要的传统粘滑制度在较低的速度，被证明是至关重要的摩擦力峰值的出现在共振和准共振速度。随着阻尼的变化，不同峰的演化变得不平凡，这与尖端双滑移和记忆效应的不寻常表现有关。随着系统参数和温度的变化，主力峰的相对值与阻尼因子的关系不单调，最大可达几十个百分点。与AFM实验中使用的近乎理想的悬臂梁相比，在实际系统中，驱动弹簧的阻尼可能是显著的，因此这种强烈的能量耗散共振增强很可能发生。图形抽象

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来源期刊

Tribology Letters 工程技术-工程：化工

CiteScore

5.30

自引率

9.40%

发文量

116

审稿时长

2.5 months

期刊介绍： Tribology Letters is devoted to the development of the science of tribology and its applications, particularly focusing on publishing high-quality papers at the forefront of tribological science and that address the fundamentals of friction, lubrication, wear, or adhesion. The journal facilitates communication and exchange of seminal ideas among thousands of practitioners who are engaged worldwide in the pursuit of tribology-based science and technology.