2026-07-18T13:54:10Zhttps://docta.ucm.es/rest/oai/requestoai:docta.ucm.es:20.500.14352/1349182026-04-22T00:09:32Zcom_20.500.14352_14col_20.500.14352_15
Tangentially active polymers in cylindrical channels
Martín Roca, José
Locatelli, Emanuele
Bianco, Valentino
Malgaretti, Paolo
Valeriani, Chantal
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.
2026-04-21T11:11:47Z
2026-04-21T11:11:47Z
2026-04-21T11:11:47Z
2024-10-08
journal article
https://hdl.handle.net/20.500.14352/134918
XXXX-XXXX
10.21468/scipostphys.17.4.107
2542-4653
eng
info:eu-repo/grantAgreement/EC/H2020/730897/EU/Transnational Access Programme for a Pan-European Network of HPC Research Infrastructures and Laboratories for scientific computing/HPC-EUROPA3
info:eu-repo/grantAgreement/ISCIII/Plan Estatal de Investigación Científica, Técnica y de Innovación 2021-2023/IHRC22%2F00002/ES/Bacterial biofilm disruption mediated by active colloids/
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2022-140407NB-C21/ES/AUTOORGANIZACION Y DINAMICA EN SISTEMAS DE PARTICULAS ACTIVAS Y ACTUADAS INTERACTUANTES: SIMULACIONES Y EXPERIMENTOS/
Martín-Roca, José, et al. «Tangentially active polymers in cylindrical channels». SciPost Physics, vol. 17, n.o 4, octubre de 2024, p. 107. DOI.org (Crossref), https://doi.org/10.21468/SciPostPhys.17.4.107.
http://creativecommons.org/licenses/by/4.0/
open access
Attribution 4.0 International
SciPost