Collision-induced torque mediates the transition of chiral dynamic patterns formed by active particles

Tetsuya Hiraiwa, Ryo Akiyama, Daisuke Inoue, Arif Md Rashedul Kabir, Akira Kakugo

Research output: Contribution to journalArticlepeer-review


Controlling the patterns formed by self-propelled particles through dynamic self-organization is a challenging task. Although varieties of patterns associated with chiral self-propelled particles have been reported, essential factors that determine the morphology of the patterns have remained unclear. Here, we explore theoretically how torque formed upon collision of the particles affects the dynamic self-organization of the particles and determine the patterns. Based on a particle-based model with collision-induced torque and torque associated with self-propulsion, we find that introducing collision-induced torque turns the homogeneous bi-directionally aligned particles into rotating mono-polar flocks, which helps resolve a discrepancy in the earlier observations in microfilament gliding assays.

Original languageEnglish
Pages (from-to)28782-28787
Number of pages6
JournalPhysical Chemistry Chemical Physics
Issue number47
Publication statusPublished - Oct 26 2022

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy
  • Physical and Theoretical Chemistry


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