A nonequilibrium force can stabilize 2D active nematics
RAMASWAMY, Sriram
TIFR Centre for Interdisciplinary Sciences [Hyderabad] [TCIS]
Centre for Condensed Matter Theory [Bangalore]
TIFR Centre for Interdisciplinary Sciences [Hyderabad] [TCIS]
Centre for Condensed Matter Theory [Bangalore]
LENZ, Martin
Laboratoire de Physique Théorique et Modèles Statistiques [LPTMS]
Multiscale Material Science for Energy and Environment [MSE 2]
< Reduce
Laboratoire de Physique Théorique et Modèles Statistiques [LPTMS]
Multiscale Material Science for Energy and Environment [MSE 2]
Language
en
Article de revue
This item was published in
Proceedings of the National Academy of Sciences of the United States of America. 2018, vol. 115, n° 27, p. 6934-6939
National Academy of Sciences
English Abstract
Suspensions of actively driven anisotropic objects exhibit distinctively nonequilibrium behaviors, and current theories predict that they are incapable of sustaining orientational order at high activity. By contrast, here ...Read more >
Suspensions of actively driven anisotropic objects exhibit distinctively nonequilibrium behaviors, and current theories predict that they are incapable of sustaining orientational order at high activity. By contrast, here we show that nematic suspensions on a substrate can display order at arbitrarily high activity due to a previously unreported, potentially stabilizing active force. This force moreover emerges inevitably in theories of active orientable fluids under geometric confinement. The resulting nonequilibrium ordered phase displays robust giant number fluctuations that cannot be suppressed even by an incompressible solvent. Our results apply to virtually all experimental assays used to investigate the active nematic ordering of self-propelled colloids, bacterial sus-pensions, and the cytoskeleton and have testable implications in interpreting their nonequilibrium behaviors.Read less <
English Keywords
Active matter
Living liquid crystals
Confined active nematics
European Project
Disordered assemblies of biofilaments: from aggregation to contractility
Dissecting active matter: Microscopic origins of macroscopic actomyosin activity
Dissecting active matter: Microscopic origins of macroscopic actomyosin activity
ANR Project
Idex Paris-Saclay - ANR-11-IDEX-0003
Impacts marchands, non marchands et structurels des réformes des politiques agricoles et agri-environnementales - ANR-05-PADD-0015
Impacts marchands, non marchands et structurels des réformes des politiques agricoles et agri-environnementales - ANR-05-PADD-0015
Origin
Hal imported