Tangentially active polymers in cylindrical channels
Martín-Roca J, Locatelli E, Bianco V, Malgaretti P, Valeriani C (2024)
Publication Type: Journal article
Publication year: 2024
Journal
Book Volume: 17
Article Number: 107
Journal Issue: 4
DOI: 10.21468/SciPostPhys.17.4.107
Abstract
We present an analytical and computational study characterizing the structural and dynamical properties of an active filament confined in cylindrical channels. We first outline the effects of the interplay between confinement and polar self-propulsion on the conformation of the chains. We observe that the scaling of the polymer size in the channel, quantified by the end-to-end distance, shows different anomalous behaviours under different confinement and activity conditions. In particular, we report scaling exponents that are markedly different from their passive counterparts. Interestingly, we show that the universal relation, describing the ratio between the end-to-end distance of passive polymer chains in cylindrical channels and in bulk is broken by activity. Finally, we show that the long-time diffusion coefficient under confinement can be rationalised by an analytical model, that takes into account the presence of the channel and the elongated nature of the polymer.
Involved external institutions
Universidad Complutense de Madrid (UCM)
Spain (ES)
University of Padua / Universita degli Studi di Padova
Italy (IT)
Forschungszentrum Jülich / Research Centre Jülich (FZJ)
Germany (DE)
Spain (ES)
University of Padua / Universita degli Studi di Padova
Italy (IT)
Forschungszentrum Jülich / Research Centre Jülich (FZJ)
Germany (DE)
How to cite
APA:
Martín-Roca, J., Locatelli, E., Bianco, V., Malgaretti, P., & Valeriani, C. (2024). Tangentially active polymers in cylindrical channels. SciPost Physics, 17(4). https://doi.org/10.21468/SciPostPhys.17.4.107
MLA:
Martín-Roca, José, et al. "Tangentially active polymers in cylindrical channels." SciPost Physics 17.4 (2024).
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