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| Main Authors: | , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2403.18157 |
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| _version_ | 1866909815558635520 |
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| author | Huseby, Elias Gissinger, Josephine Candelier, Fabien Pujara, Nimish Verhille, Gautier Mehlig, Bernhard Voth, Greg |
| author_facet | Huseby, Elias Gissinger, Josephine Candelier, Fabien Pujara, Nimish Verhille, Gautier Mehlig, Bernhard Voth, Greg |
| contents | We investigate the sedimentation of chiral particles in viscous fluid flow. We identify helical ribbons as simple particles with strong translation-rotation coupling whose symmetry ensures that the centers of mass, buoyancy, resistance, and mobility coincide. Experimental measurements of both relevant mobility tensors show excellent agreement with simulations of ribbons made of interacting spheres. We observe quasi-periodic angular dynamics causing complex spatial trajectories. In tilt-spin phase space, orbits are closed due to time-reversal and reflection symmetry. Changing the helical ribbon length reveals a bifurcation at which the stable sedimentation orientations switch. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2403_18157 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Helical Ribbons: Simple Chiral Sedimentation Huseby, Elias Gissinger, Josephine Candelier, Fabien Pujara, Nimish Verhille, Gautier Mehlig, Bernhard Voth, Greg Soft Condensed Matter We investigate the sedimentation of chiral particles in viscous fluid flow. We identify helical ribbons as simple particles with strong translation-rotation coupling whose symmetry ensures that the centers of mass, buoyancy, resistance, and mobility coincide. Experimental measurements of both relevant mobility tensors show excellent agreement with simulations of ribbons made of interacting spheres. We observe quasi-periodic angular dynamics causing complex spatial trajectories. In tilt-spin phase space, orbits are closed due to time-reversal and reflection symmetry. Changing the helical ribbon length reveals a bifurcation at which the stable sedimentation orientations switch. |
| title | Helical Ribbons: Simple Chiral Sedimentation |
| topic | Soft Condensed Matter |
| url | https://arxiv.org/abs/2403.18157 |