Active Topological Glass Confined within a Spherical Cavity | Zendy

Iurii Chubak | Zendy; Stanard Mebwe Pachong | Zendy; Kurt Kremer | Zendy; Christos N. Likos | Zendy; Jan Smrek | Zendy

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Active Topological Glass Confined within a Spherical Cavity

Author(s) -

Iurii Chubak,

Stanard Mebwe Pachong,

Kurt Kremer,

Christos N. Likos,

Jan Smrek

Publication year - 2022

Publication title -

macromolecules

Language(s) - Uncategorized

Resource type - Journals

SCImago Journal Rank - 1.994

H-Index - 313

eISSN - 1520-5835

pISSN - 0024-9297

DOI - 10.1021/acs.macromol.1c02471

Subject(s) - topology (electrical circuits) , relaxation (psychology) , nucleus , active matter , physics , chemical physics , materials science , molecular physics , biology , mathematics , combinatorics , neuroscience , microbiology and biotechnology

We study active topological glass under spherical confinement, allowing us to exceed the chain lengths simulated previously and determine the critical exponents of the arrested conformations. We find a previously unresolved "tank-treading" dynamic mode of active segments along the ring contour. This mode can enhance active-passive phase separation in the state of active topological glass when both diffusional and conformational relaxation of the rings are significantly suppressed. Within the observational time, we see no systematic trends in the positioning of the separated active domains within the confining sphere. The arrested state exhibits coherent stochastic rotations. We discuss possible connections of the conformational and dynamic features of the system to chromosomes enclosed in the nucleus of a living cell.

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