Phononic origin of structural lubrication
Abstract Atomistic mechanisms of frictional energy dissipation have attracted significant attention. However, the dynamics of phonon excitation and dissipation remain elusive for many friction processes. Through systematic fast Fourier transform analyses of the frictional signals as a silicon tip sl...
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| Format: | Article |
| Language: | English |
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Tsinghua University Press
2022-07-01
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| Series: | Friction |
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| Online Access: | https://doi.org/10.1007/s40544-022-0636-3 |
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| author | Yun Dong Yongkang Wang Zaoqi Duan Shuyu Huang Yi Tao Xi Lu Yan Zhang Yajing Kan Zhiyong Wei Deyu Li Yunfei Chen |
| author_facet | Yun Dong Yongkang Wang Zaoqi Duan Shuyu Huang Yi Tao Xi Lu Yan Zhang Yajing Kan Zhiyong Wei Deyu Li Yunfei Chen |
| author_sort | Yun Dong |
| collection | DOAJ |
| description | Abstract Atomistic mechanisms of frictional energy dissipation have attracted significant attention. However, the dynamics of phonon excitation and dissipation remain elusive for many friction processes. Through systematic fast Fourier transform analyses of the frictional signals as a silicon tip sliding over a graphite surface at different angles and velocities, we experimentally demonstrate that friction mainly excites non-equilibrium phonons at the washboard frequency and its harmonics. Using molecular dynamics simulations, we further disclose the phononic origin of structural lubrication, i.e., the drastic reduction of friction force as the contact angle between two commensurate surfaces changes. In commensurate contacting states, friction excites a large amount of phonons at the washboard frequency and many orders of its harmonics that perfectly match each other in the sliding tip and substrate, while for incommensurate cases, only limited phonons are generated at mismatched washboard frequencies and few low order harmonics in the tip and substrate. |
| format | Article |
| id | doaj-art-df6fd602f44846349baa2dcac39ab3c7 |
| institution | OA Journals |
| issn | 2223-7690 2223-7704 |
| language | English |
| publishDate | 2022-07-01 |
| publisher | Tsinghua University Press |
| record_format | Article |
| series | Friction |
| spelling | doaj-art-df6fd602f44846349baa2dcac39ab3c72025-08-20T01:55:41ZengTsinghua University PressFriction2223-76902223-77042022-07-0111696697610.1007/s40544-022-0636-3Phononic origin of structural lubricationYun Dong0Yongkang Wang1Zaoqi Duan2Shuyu Huang3Yi Tao4Xi Lu5Yan Zhang6Yajing Kan7Zhiyong Wei8Deyu Li9Yunfei Chen10Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, School of Mechanical Engineering, Southeast UniversityJiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, School of Mechanical Engineering, Southeast UniversityJiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, School of Mechanical Engineering, Southeast UniversityJiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, School of Mechanical Engineering, Southeast UniversityJiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, School of Mechanical Engineering, Southeast UniversityJiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, School of Mechanical Engineering, Southeast UniversityJiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, School of Mechanical Engineering, Southeast UniversityJiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, School of Mechanical Engineering, Southeast UniversityJiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, School of Mechanical Engineering, Southeast UniversityDepartment of Mechanical Engineering, Vanderbilt UniversityJiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, School of Mechanical Engineering, Southeast UniversityAbstract Atomistic mechanisms of frictional energy dissipation have attracted significant attention. However, the dynamics of phonon excitation and dissipation remain elusive for many friction processes. Through systematic fast Fourier transform analyses of the frictional signals as a silicon tip sliding over a graphite surface at different angles and velocities, we experimentally demonstrate that friction mainly excites non-equilibrium phonons at the washboard frequency and its harmonics. Using molecular dynamics simulations, we further disclose the phononic origin of structural lubrication, i.e., the drastic reduction of friction force as the contact angle between two commensurate surfaces changes. In commensurate contacting states, friction excites a large amount of phonons at the washboard frequency and many orders of its harmonics that perfectly match each other in the sliding tip and substrate, while for incommensurate cases, only limited phonons are generated at mismatched washboard frequencies and few low order harmonics in the tip and substrate.https://doi.org/10.1007/s40544-022-0636-3phononic frictionwashboard frequencystructural lubricationcommensurate and incommensurate interfaces |
| spellingShingle | Yun Dong Yongkang Wang Zaoqi Duan Shuyu Huang Yi Tao Xi Lu Yan Zhang Yajing Kan Zhiyong Wei Deyu Li Yunfei Chen Phononic origin of structural lubrication Friction phononic friction washboard frequency structural lubrication commensurate and incommensurate interfaces |
| title | Phononic origin of structural lubrication |
| title_full | Phononic origin of structural lubrication |
| title_fullStr | Phononic origin of structural lubrication |
| title_full_unstemmed | Phononic origin of structural lubrication |
| title_short | Phononic origin of structural lubrication |
| title_sort | phononic origin of structural lubrication |
| topic | phononic friction washboard frequency structural lubrication commensurate and incommensurate interfaces |
| url | https://doi.org/10.1007/s40544-022-0636-3 |
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