Friction between silicon and diamond at the nanoscale
This work investigates the nanoscale friction between diamond-structure silicon (Si) and diamond via molecular dynamics simulation. The interaction between the interfaces is considered as strong covalent bonds. The effects of load, sliding velocity, temperature and lattice orientation are investigat...
| Main Authors: | , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2016
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/93142 http://hdl.handle.net/10220/40959 |
| _version_ | 1811678700658229248 |
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| author | Bai, Lichun Sha, Zhen-Dong Srikanth, Narasimalu Pei, Qing-Xiang Wang, Xu Srolovitz, David J Zhou, Kun |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Bai, Lichun Sha, Zhen-Dong Srikanth, Narasimalu Pei, Qing-Xiang Wang, Xu Srolovitz, David J Zhou, Kun |
| author_sort | Bai, Lichun |
| collection | NTU |
| description | This work investigates the nanoscale friction between diamond-structure silicon (Si) and diamond via molecular dynamics simulation. The interaction between the interfaces is considered as strong covalent bonds. The effects of load, sliding velocity, temperature and lattice orientation are investigated. Results show that the friction can be divided into two stages: the static friction and the kinetic friction. During the static friction stage, the load, lattice orientation and temperature dramatically affects the friction by changing the elastic limit of Si. Large elastic deformation is induced in the Si block, which eventually leads to the formation of a thin layer of amorphous Si near the Si-diamond interface and thus the beginning of the kinetic friction stage. During the kinetic friction stage, only temperature and velocity have an effect on the friction. The investigation of the microstructural evolution of Si demonstrated that the kinetic friction can be categorized into two modes (stick-slip and smooth sliding) depending on the temperature of the fracture region. |
| first_indexed | 2024-10-01T02:57:26Z |
| format | Journal Article |
| id | ntu-10356/93142 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:57:26Z |
| publishDate | 2016 |
| record_format | dspace |
| spelling | ntu-10356/931422020-03-07T12:56:02Z Friction between silicon and diamond at the nanoscale Bai, Lichun Sha, Zhen-Dong Srikanth, Narasimalu Pei, Qing-Xiang Wang, Xu Srolovitz, David J Zhou, Kun School of Mechanical and Aerospace Engineering Interdisciplinary Graduate School (IGS) silicon nanoscale friction This work investigates the nanoscale friction between diamond-structure silicon (Si) and diamond via molecular dynamics simulation. The interaction between the interfaces is considered as strong covalent bonds. The effects of load, sliding velocity, temperature and lattice orientation are investigated. Results show that the friction can be divided into two stages: the static friction and the kinetic friction. During the static friction stage, the load, lattice orientation and temperature dramatically affects the friction by changing the elastic limit of Si. Large elastic deformation is induced in the Si block, which eventually leads to the formation of a thin layer of amorphous Si near the Si-diamond interface and thus the beginning of the kinetic friction stage. During the kinetic friction stage, only temperature and velocity have an effect on the friction. The investigation of the microstructural evolution of Si demonstrated that the kinetic friction can be categorized into two modes (stick-slip and smooth sliding) depending on the temperature of the fracture region. ASTAR (Agency for Sci., Tech. and Research, S’pore) MOE (Min. of Education, S’pore) 2016-07-18T08:22:12Z 2019-12-06T18:34:39Z 2016-07-18T08:22:12Z 2019-12-06T18:34:39Z 2015 Journal Article Bai, L., Sha, Z.-D., Srikanth, N., Pei, Q.-X., Wang, X., Srolovitz, D. J., et al. (2015). Friction between silicon and diamond at the nanoscale. Journal of Physics D: Applied Physics, 48(25), 255303-. 0022-3727 https://hdl.handle.net/10356/93142 http://hdl.handle.net/10220/40959 10.1088/0022-3727/48/25/255303 en Journal of Physics D: Applied Physics © 2015 IOP Publishing Ltd. |
| spellingShingle | silicon nanoscale friction Bai, Lichun Sha, Zhen-Dong Srikanth, Narasimalu Pei, Qing-Xiang Wang, Xu Srolovitz, David J Zhou, Kun Friction between silicon and diamond at the nanoscale |
| title | Friction between silicon and diamond at the nanoscale |
| title_full | Friction between silicon and diamond at the nanoscale |
| title_fullStr | Friction between silicon and diamond at the nanoscale |
| title_full_unstemmed | Friction between silicon and diamond at the nanoscale |
| title_short | Friction between silicon and diamond at the nanoscale |
| title_sort | friction between silicon and diamond at the nanoscale |
| topic | silicon nanoscale friction |
| url | https://hdl.handle.net/10356/93142 http://hdl.handle.net/10220/40959 |
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