TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhys.17.4.107
TI  - Tangentially active polymers in cylindrical channels
PY  - 2024/10/08
UR  - https://scipost.org/SciPostPhys.17.4.107
JF  - SciPost Physics
JA  - SciPost Phys.
VL  - 17
IS  - 4
SP  - 107
A1  - Martín-Roca, José
AU  - Locatelli, Emanuele
AU  - Bianco, Valentino
AU  - Malgaretti, Paolo
AU  - Valeriani, Chantal
AB  - 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.
ER  -

@Article{10.21468/SciPostPhys.17.4.107,
	title={{Tangentially active polymers in cylindrical channels}},
	author={José Martín-Roca and Emanuele Locatelli and Valentino Bianco and Paolo Malgaretti and Chantal Valeriani},
	journal={SciPost Phys.},
	volume={17},
	pages={107},
	year={2024},
	publisher={SciPost},
	doi={10.21468/SciPostPhys.17.4.107},
	url={https://scipost.org/10.21468/SciPostPhys.17.4.107},
}