Migration and separation of polymers in non-uniform active baths
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866913260346802176 |
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| author | Muzzeddu, Pietro Luigi Gambassi, Andrea Sommer, Jens-Uwe Sharma, Abhinav |
| author_facet | Muzzeddu, Pietro Luigi Gambassi, Andrea Sommer, Jens-Uwe Sharma, Abhinav |
| contents | Polymer-like structures are ubiquitous in nature and synthetic materials. Their configurational and migration properties are often affected by crowded environments leading to non-thermal fluctuations. Here, we study an ideal Rouse chain in contact with a non-homogeneous active bath, characterized by the presence of active self-propelled agents which exert time-correlated forces on the chain. By means of a coarse-graining procedure, we derive an effective evolution for the center of mass of the chain and show its tendency to migrate towards and preferentially localize in regions of high/low bath activity depending on the model parameters. In particular, we demonstrate that an active bath with non-uniform activity can be used to separate efficiently polymeric species with different lengths and/or connectivity. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2403_05914 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Migration and separation of polymers in non-uniform active baths Muzzeddu, Pietro Luigi Gambassi, Andrea Sommer, Jens-Uwe Sharma, Abhinav Soft Condensed Matter Statistical Mechanics Polymer-like structures are ubiquitous in nature and synthetic materials. Their configurational and migration properties are often affected by crowded environments leading to non-thermal fluctuations. Here, we study an ideal Rouse chain in contact with a non-homogeneous active bath, characterized by the presence of active self-propelled agents which exert time-correlated forces on the chain. By means of a coarse-graining procedure, we derive an effective evolution for the center of mass of the chain and show its tendency to migrate towards and preferentially localize in regions of high/low bath activity depending on the model parameters. In particular, we demonstrate that an active bath with non-uniform activity can be used to separate efficiently polymeric species with different lengths and/or connectivity. |
| title | Migration and separation of polymers in non-uniform active baths |
| topic | Soft Condensed Matter Statistical Mechanics |
| url | https://arxiv.org/abs/2403.05914 |