Noise-induced transitions from contractile to extensile active stress in isotropic fluids
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arXiv
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| Format: | Preprint |
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2024
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| _version_ | 1866911026856853504 |
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| author | Dedenon, Mathieu Kruse, Karsten |
| author_facet | Dedenon, Mathieu Kruse, Karsten |
| contents | Tissues of living cells are a prime example of active fluids. There is experimental evidence that tissues generate extensile active stress even though their constituting cells are contractile. Fluctuating forces that could result from cell-substrate interactions have been proposed to be able to induce a transition from contractile to extensile active stress. Through analytic calculations and numerical computations, we show that in isotropic active fluids, nonlinearities and a coupling between fluctuating forces and fluid density are necessary for such a transition to occur. Here, both transitions from extensile to contractile and vice versa are possible. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2410_14358 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Noise-induced transitions from contractile to extensile active stress in isotropic fluids Dedenon, Mathieu Kruse, Karsten Soft Condensed Matter Biological Physics Tissues of living cells are a prime example of active fluids. There is experimental evidence that tissues generate extensile active stress even though their constituting cells are contractile. Fluctuating forces that could result from cell-substrate interactions have been proposed to be able to induce a transition from contractile to extensile active stress. Through analytic calculations and numerical computations, we show that in isotropic active fluids, nonlinearities and a coupling between fluctuating forces and fluid density are necessary for such a transition to occur. Here, both transitions from extensile to contractile and vice versa are possible. |
| title | Noise-induced transitions from contractile to extensile active stress in isotropic fluids |
| topic | Soft Condensed Matter Biological Physics |
| url | https://arxiv.org/abs/2410.14358 |