Patterning surface textured plates with a viscoplastic fluid
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arXiv
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| Autores principales: | , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| Materias: | |
| Acceso en línea: | |
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| _version_ | 1866918088135409664 |
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| author | Kern, Vanessa R. Olsen, Pål E. S. Moura, Marcel Carlson, Andreas |
| author_facet | Kern, Vanessa R. Olsen, Pål E. S. Moura, Marcel Carlson, Andreas |
| contents | The deposition of a viscoplastic fluid onto a substrate can be achieved by simply moving apart two plates initially separated by a fluid filled gap, where the footprint shape depends on the initiation of a fingering instability. Here, we present another approach for the controlled deposition of a viscoplastic fluid by designing the macroscopic structures of the solid substrate. Through experiments in a lifted Hele-Shaw cell, we explore how slot, square, pyramid, and triangle-shaped patterns affect the dynamics of liquid deposition. These substrate structures directly control the final shape of the viscoplastic fluid footprint. It turns out that these substrate patterns have little influence on the normal adhesive force acting on the plates. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_23746 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Patterning surface textured plates with a viscoplastic fluid Kern, Vanessa R. Olsen, Pål E. S. Moura, Marcel Carlson, Andreas Fluid Dynamics The deposition of a viscoplastic fluid onto a substrate can be achieved by simply moving apart two plates initially separated by a fluid filled gap, where the footprint shape depends on the initiation of a fingering instability. Here, we present another approach for the controlled deposition of a viscoplastic fluid by designing the macroscopic structures of the solid substrate. Through experiments in a lifted Hele-Shaw cell, we explore how slot, square, pyramid, and triangle-shaped patterns affect the dynamics of liquid deposition. These substrate structures directly control the final shape of the viscoplastic fluid footprint. It turns out that these substrate patterns have little influence on the normal adhesive force acting on the plates. |
| title | Patterning surface textured plates with a viscoplastic fluid |
| topic | Fluid Dynamics |
| url | https://arxiv.org/abs/2506.23746 |