Frictional Dissipation and Scaling Laws at van der Waals Interface: The Key Role of Elastic Pinning of Moiré at Edges and Corners
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arXiv
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| Autores principales: | , , , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866915008490766336 |
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| author | Gao, Xiang Yan, Weidong Ouyang, Wengen Liu, Ze Urbakh, Michael Hod, Oded |
| author_facet | Gao, Xiang Yan, Weidong Ouyang, Wengen Liu, Ze Urbakh, Michael Hod, Oded |
| contents | Van der Waals heterogeneous interfaces are promising candidates for the scaling up of structural superlubricity to meet practical applications. Several factors, however, have been identified that may eliminate superlubricity. Elasticity is one such intrinsic factor, where shear induced lattice reconstruction leads to local interfacial pinning, even at clean pristine contacts. Here, through detailed atomistic simulations, we reveal that incomplete moiré tile pinning at the corners and edges of finite sliders dominates friction from the nano- to the microscales. We further demonstrate that slider shape tailoring and twisting allow to control energy dissipation and its scaling with contact size, thus opening the way to achieve large-scale superlubricity. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_04609 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Frictional Dissipation and Scaling Laws at van der Waals Interface: The Key Role of Elastic Pinning of Moiré at Edges and Corners Gao, Xiang Yan, Weidong Ouyang, Wengen Liu, Ze Urbakh, Michael Hod, Oded Mesoscale and Nanoscale Physics Materials Science Van der Waals heterogeneous interfaces are promising candidates for the scaling up of structural superlubricity to meet practical applications. Several factors, however, have been identified that may eliminate superlubricity. Elasticity is one such intrinsic factor, where shear induced lattice reconstruction leads to local interfacial pinning, even at clean pristine contacts. Here, through detailed atomistic simulations, we reveal that incomplete moiré tile pinning at the corners and edges of finite sliders dominates friction from the nano- to the microscales. We further demonstrate that slider shape tailoring and twisting allow to control energy dissipation and its scaling with contact size, thus opening the way to achieve large-scale superlubricity. |
| title | Frictional Dissipation and Scaling Laws at van der Waals Interface: The Key Role of Elastic Pinning of Moiré at Edges and Corners |
| topic | Mesoscale and Nanoscale Physics Materials Science |
| url | https://arxiv.org/abs/2411.04609 |