Resonance in Atomic-Scale Sliding Friction

• DOI: 10.1021/acs.nanolett.1c00622
• Publication Date: 2021-05-21T14:51:37Z
• Authors: Zaoqi Duan; Zhiyong Wei; Shuyu Huang; Yongkang Wang; Chengdong Sun; Yi Tao; Yun Dong; Juekuan Yang; Yan Zhang; Yajing Kan; Deyu Li; Yunfei Chen
• Keywords: Thermalisation

Friction represents a major energy dissipation mode, yet the atomistic mechanism of how friction converts mechanical motion into heat remains elusive. It has been suggested that excess phonons are mainly excited at washboard frequency, fundamental frequency which relative excites interface atoms, and subsequent thermalization these nonequilibrium completes process. Through combined atomic force microscopy measurements modeling, here we show nonlinear interactions between sliding tip substrate can generate not only but also its harmonics. These induce resonant vibration lead to multiple peaks in as velocity ramps up. observations disclose previously unrecognized channels associated with provide insights engineering through adjusting tip–substrate system.