Dynamic hysteresis of an oscillatory contact line
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arXiv
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| Autores principales: | , , , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866915035084750848 |
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| author | Shen, Jiaxing Lee, Yaerim Li, Yuanzhe Zaleski, Stéphane Amberg, Gustav Shiomi, Junichiro |
| author_facet | Shen, Jiaxing Lee, Yaerim Li, Yuanzhe Zaleski, Stéphane Amberg, Gustav Shiomi, Junichiro |
| contents | During oscillatory wetting, a phase retardation emerges between contact angle variation and contact line velocity, presenting as a hysteresis loop in their correlation -- an effect we term dynamic hysteresis. This phenomenon is found to be tunable by modifying the surface with different molecular layers. A comparative analysis of dynamic hysteresis, static hysteresis, and contact line friction coefficients across diverse substrates reveals that dynamic hysteresis is not a result of dissipative effects but is instead proportionally linked to the flexibility of the grafted layer on the surface. In the quest for appropriate conditions to model oscillatory contact line motion, we identify the generalized Hocking's linear law and modified Generalized Navier Boundary Condition (GNBC) as alternative options for predicting realistic dynamic hysteresis. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2408_05796 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Dynamic hysteresis of an oscillatory contact line Shen, Jiaxing Lee, Yaerim Li, Yuanzhe Zaleski, Stéphane Amberg, Gustav Shiomi, Junichiro Fluid Dynamics Soft Condensed Matter During oscillatory wetting, a phase retardation emerges between contact angle variation and contact line velocity, presenting as a hysteresis loop in their correlation -- an effect we term dynamic hysteresis. This phenomenon is found to be tunable by modifying the surface with different molecular layers. A comparative analysis of dynamic hysteresis, static hysteresis, and contact line friction coefficients across diverse substrates reveals that dynamic hysteresis is not a result of dissipative effects but is instead proportionally linked to the flexibility of the grafted layer on the surface. In the quest for appropriate conditions to model oscillatory contact line motion, we identify the generalized Hocking's linear law and modified Generalized Navier Boundary Condition (GNBC) as alternative options for predicting realistic dynamic hysteresis. |
| title | Dynamic hysteresis of an oscillatory contact line |
| topic | Fluid Dynamics Soft Condensed Matter |
| url | https://arxiv.org/abs/2408.05796 |