Jump to main content
Jump to site search


How a local active force modifies the structural properties of polymers

Abstract

We study the dynamics of a polymer, described as a variant of a Rouse chain, driven by an active terminal monomer (head). The local active force induces a transition from a globule-like to an elongated state, as revealed by the study of the end-to-end distance, the variance of which is analytically predicted under suitable approximations. The change in the relaxation times of the Rouse-modes produced by the local self-propulsion is consistent with the transition from globule to elongated conformations. Moreover, also the bond-bond spatial correlation for the chain head are affected by the self-propulsion and a gradient of over-stretched bonds along the chain is observed. We compare our numerical results both with the phenomenological stiff-polymer theory and several analytical predictions in the Rouse-chain approximation.

Back to tab navigation

Article information


Submitted
14 Nov 2019
Accepted
14 Feb 2020
First published
14 Feb 2020

Soft Matter, 2020, Accepted Manuscript
Article type
Paper

How a local active force modifies the structural properties of polymers

L. Natali, L. Caprini and F. Cecconi, Soft Matter, 2020, Accepted Manuscript , DOI: 10.1039/C9SM02258A

Social activity

Search articles by author

Spotlight

Advertisements