Title
Supercoiled ring polymers under shear flow
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Abstract
We apply monomer-resolved computer simulations of supercoiled ring polymers under shear, taking full account of the hydrodynamic interactions, accompanied, in parallel, by simulations in which these are switched off. The combination of bending and torsional rigidities inherent in these polymers, in conjunction with hydrodynamics, has a profound impact on their flow properties. In contrast to their flexible counterparts, which dramatically deform and inflate under shear [Liebetreu et al., Commun. Mater. 2020, 1, 4], supercoiled rings undergo only weak changes in their overall shape and they display both a reduced propensity to tumbling (at fixed Weissenberg number) and a much stronger orientational resistance with respect to their flexible counterparts. In the presence of hydrodynamic interactions, the coupling of the polymer to solvent flow is capable of bringing about a topological transformation of writhe to twist at strong shear upon conservation of the overall linking number.
Object type
Language
English [eng]
Persistent identifier
Appeared in
Title
Nanoscale
Volume
16
Issue
18
ISSN
2040-3364
Issued
2024
From page
8880
To page
8899
Publication
Royal Society of Chemistry (RSC)
Version type
Date issued
2024
Access rights
Rights
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