Collective dynamics in a binary mixture of hydrodynamically coupled microrotors

Kyongmin Yeo, Enkeleida Lushi, Petia M. Vlahovska

Research output: Contribution to journalArticlepeer-review

96 Scopus citations


We study, numerically, the collective dynamics of self-rotating nonaligning particles by considering a monolayer of spheres driven by constant clockwise or counterclockwise torques. We show that hydrodynamic interactions alter the emergence of large-scale dynamical patterns compared to those observed in dry systems. In dilute suspensions, the flow stirred by the rotors induces clustering of opposite-spin rotors, while at higher densities same-spin rotors phase separate. Above a critical rotor density, dynamic hexagonal crystals form. Our findings underscore the importance of inclusion of the many-body, long-range hydrodynamic interactions in predicting the phase behavior of active particles.

Original languageEnglish (US)
Article number188301
JournalPhysical Review Letters
Issue number18
StatePublished - May 5 2015
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


Dive into the research topics of 'Collective dynamics in a binary mixture of hydrodynamically coupled microrotors'. Together they form a unique fingerprint.

Cite this