Large scale zigzag pattern emerging from circulating active shakers
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arXiv
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866911768988614656 |
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| author | Junot, Gaspard De Corato, Marco Tierno, Pietro |
| author_facet | Junot, Gaspard De Corato, Marco Tierno, Pietro |
| contents | We report the emergence of large zigzag bands in a population of reversibly actuated magnetic rotors that behave as active shakers, namely squirmers that shake the fluid around them without moving. The shakers collectively organize into dynamic structures displaying self-similar growth, and generate topological defects in form of cusps that connect vortices of rolling particles with alternating chirality. By combining experimental analysis with particle-based simulation, we show that the special flow field created by the shakers is the only ingredient needed to reproduce the observed spatiotemporal pattern. We unveil a self-organization scenario in a collection of driven particles in an viscoelastic medium emerging from the reduced particle degrees of freedom, as here the frozen orientational motion of the shakers. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2402_00493 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Large scale zigzag pattern emerging from circulating active shakers Junot, Gaspard De Corato, Marco Tierno, Pietro Soft Condensed Matter We report the emergence of large zigzag bands in a population of reversibly actuated magnetic rotors that behave as active shakers, namely squirmers that shake the fluid around them without moving. The shakers collectively organize into dynamic structures displaying self-similar growth, and generate topological defects in form of cusps that connect vortices of rolling particles with alternating chirality. By combining experimental analysis with particle-based simulation, we show that the special flow field created by the shakers is the only ingredient needed to reproduce the observed spatiotemporal pattern. We unveil a self-organization scenario in a collection of driven particles in an viscoelastic medium emerging from the reduced particle degrees of freedom, as here the frozen orientational motion of the shakers. |
| title | Large scale zigzag pattern emerging from circulating active shakers |
| topic | Soft Condensed Matter |
| url | https://arxiv.org/abs/2402.00493 |