Optimal Chirality Enhances Long-Range Fluctuation-Induced Interactions in Active Fluids.

ABSTRACT: Understanding interactions between chiral active particles- self-propelling and self-rotating entities- is crucial for uncovering how chiral active matter self-organizes into dynamic structures. Although fluctuation-induced forces in nonequilibrium active systems can drive structure formation, the role of chirality remains largely unexplored. Effective fluctuation-induced forces between intruders immersed in chiral active fluids are investigated and revealing that the impact of chirality depends sensitively on particle shape. For circular particles, increasing the self-rotation to self-propulsion ratio suppresses the interaction, reflecting a transition from rotating flocks to localized spinners. Contrarily, a striking collective behavior emerges for rodlike particles: vortices spontaneous

SUBMITTER: Fatemi H 

PROVIDER: S-EPMC12697869 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature