Driven shear flow in biological magneto-active fluids
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866915398113296384 |
|---|---|
| author | Marmol, Malo Cottin-Bizonne, Cécile Cebers, Andrejs Faivre, Damien Ybert, Christophe |
| author_facet | Marmol, Malo Cottin-Bizonne, Cécile Cebers, Andrejs Faivre, Damien Ybert, Christophe |
| contents | Active fluids made of powered suspended particles have unique abilities to self-generate flow and density structures. How such dynamics can be triggered and leveraged by external cues is a key question of both biological and applied relevance. Here we use magnetotactic bacteria to explore how chemotaxis and magnetotaxis -- leading, respectively, to positional and orientational responses -- combine to generate global scale flows. Such steady regime can be quantitatively captured by a magneto-active hydrodynamic model, while time-dependent magnetic driving unveils additional patterning complexity. Overall, our findings shed light on how active fluids respond to the ubiquitous situation of multiple external information, also suggesting routes for their manipulation. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_13851 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Driven shear flow in biological magneto-active fluids Marmol, Malo Cottin-Bizonne, Cécile Cebers, Andrejs Faivre, Damien Ybert, Christophe Soft Condensed Matter Active fluids made of powered suspended particles have unique abilities to self-generate flow and density structures. How such dynamics can be triggered and leveraged by external cues is a key question of both biological and applied relevance. Here we use magnetotactic bacteria to explore how chemotaxis and magnetotaxis -- leading, respectively, to positional and orientational responses -- combine to generate global scale flows. Such steady regime can be quantitatively captured by a magneto-active hydrodynamic model, while time-dependent magnetic driving unveils additional patterning complexity. Overall, our findings shed light on how active fluids respond to the ubiquitous situation of multiple external information, also suggesting routes for their manipulation. |
| title | Driven shear flow in biological magneto-active fluids |
| topic | Soft Condensed Matter |
| url | https://arxiv.org/abs/2507.13851 |