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  • Letter
  • Open Access

Dynamic clustering of active rings

Ligesh Theeyancheri1, Subhasish Chaki1,2, Tapomoy Bhattacharjee3,*, and Rajarshi Chakrabarti1,†

  • 1Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400076, India
  • 2Institut für Theoretische Physik II - Soft Matter, Heinrich-Heine-Universität Düsseldorf, Universitätsstraße 1, D-40225 Düsseldorf, Germany
  • 3National Centre for Biological Sciences, Tata Institute of Fundamental Research, Bangalore 560065, India

  • *tapa@ncbs.res.in
  • †rajarshi@chem.iitb.ac.in
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Phys. Rev. Research 6, L012038 – Published 22 February, 2024

DOI: https://doi.org/10.1103/PhysRevResearch.6.L012038

Abstract

A collection of rings made of active Brownian particles (ABPs) for different packing fractions and activities is investigated using computer simulations. We show that active rings display an emergent dynamic clustering instead of the conventional motility-induced phase separation (MIPS) as in the case of collection of ABPs. Surprisingly, increasing packing fraction of rings exhibits a nonmonotonicity in the dynamics due to the formation of a large number of small clusters. The conformational fluctuations of the polymers suppress the usual MIPS exhibited by ABPs. Our findings demonstrate how the motion of a collection of rings is influenced by the interplay of activity, topology, and connectivity.

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Phys. Rev. Research 6, L012038– Published 22 February, 2024
  • Received 16 November 2023
  • Accepted 19 January 2024
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

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