Forces and symmetry breaking of a living meso-swimmer
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arXiv
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| Autores principales: | , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866911403051319296 |
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| author | Lara, Rafael A. Sharadhi, N. Huttunen, Anna A. L. Ansas, Lotta Rislakki, Ensio J. G. Bessa, Guilherme M. Backholm, Matilda |
| author_facet | Lara, Rafael A. Sharadhi, N. Huttunen, Anna A. L. Ansas, Lotta Rislakki, Ensio J. G. Bessa, Guilherme M. Backholm, Matilda |
| contents | Swimming is ubiquitous in nature and crucial for the survival of a wide range of organisms. The physics of swimming at the viscosity-dominated microscale and inertia-dominated macroscale is well studied. However, in between lies a complicated mesoscale with swimmers affected by non-linear and time-dependent fluid mechanics. The intricate motility strategies, combined with complex and periodically changing body shapes add extra challenges for accurate meso-swimming modelling. Here, we have further developed the micropipette force sensor to directly probe the swimming forces of the meso-organism Artemia. Through deep neural network-based image analysis, we show how Artemia achieves an increased propulsive force by increasing its level of time-reversal symmetry breaking. We present a universal force-based scaling law for a wide range of micro- to meso-organisms with different body shapes, swimming strategies, and level of inertia at the mesoscale. These results capture fundamental aspects of biological meso-swimming dynamics and provide guidance for future biomimicking meso-robot designs. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_21396 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Forces and symmetry breaking of a living meso-swimmer Lara, Rafael A. Sharadhi, N. Huttunen, Anna A. L. Ansas, Lotta Rislakki, Ensio J. G. Bessa, Guilherme M. Backholm, Matilda Soft Condensed Matter Biological Physics Swimming is ubiquitous in nature and crucial for the survival of a wide range of organisms. The physics of swimming at the viscosity-dominated microscale and inertia-dominated macroscale is well studied. However, in between lies a complicated mesoscale with swimmers affected by non-linear and time-dependent fluid mechanics. The intricate motility strategies, combined with complex and periodically changing body shapes add extra challenges for accurate meso-swimming modelling. Here, we have further developed the micropipette force sensor to directly probe the swimming forces of the meso-organism Artemia. Through deep neural network-based image analysis, we show how Artemia achieves an increased propulsive force by increasing its level of time-reversal symmetry breaking. We present a universal force-based scaling law for a wide range of micro- to meso-organisms with different body shapes, swimming strategies, and level of inertia at the mesoscale. These results capture fundamental aspects of biological meso-swimming dynamics and provide guidance for future biomimicking meso-robot designs. |
| title | Forces and symmetry breaking of a living meso-swimmer |
| topic | Soft Condensed Matter Biological Physics |
| url | https://arxiv.org/abs/2503.21396 |