Year: 2019
Type: article
Abstract: Active hydrodynamic theories are a powerful tool to study the emergent ordered phases of internally driven particles such as bird flocks, bacterial suspension and their artificial analogues. While theories of orientationally ordered phases are by now well established, the effect of chirality on these phases is much less studied. In this paper, we present a complete dynamical theory of orientationally ordered chiral particles in two-dimensional incompressible systems. We show that phase-coherent states of rotating chiral particles are remarkably stable in both momentum-conserved and non-conserved systems in contrast to their non-rotating counterparts. Furthermore, defect separation-which drives chaotic flows in non-rotating active fluids-is suppressed by intrinsic rotation of chiral active particles. We thus establish chirality as a source of dramatic stabilisation in active systems, which could be key in interpreting the collective behaviors of some biological tissues, cytoskeletal systems and collections of bacteria.
Source: Nature Communications
Authors: Ananyo Maitra, Martin Lenz
Language: English
Topic: Micro and Nano Robotics
Subfield: Condensed Matter Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $5,200
Awards: Multi-scale approach of the interplay between mechanics and chemistry?in the regulation of the actin cytoskeleton, Physics: Atoms, Light, Matter, Dissecting active matter: Microscopic origins of macroscopic actomyosin activity, G392606314, G457735187, G5452052347, G6515292181, G7240651115, G7376787254, G7702249066, G7917003928, Disordered assemblies of biofilaments: from aggregation to contractility
OpenAlex ID: W2907261190