Results 11 to 20 of about 3,142,115 (200)
Wrinkling Instability in 3D Active Nematics [PDF]
Nano Letters, 2020 In nature interactions between biopolymers and motor proteins give rise to biologically essential emergent behaviours. Besides cytoskeleton mechanics, active nematics arise from such interactions. Here we present a study on 3D active nematics made of microtubules, kinesin motors and depleting agent. It shows a rich behaviour evolving from a nematically
Andrej Vilfan +2 more
exaly +12 more sources
Geometry and Topology of Turbulence in Active Nematics [PDF]
Physical Review X, 2015 The problem of low Reynolds number turbulence in active nematic fluids is theoretically addressed. Using numerical simulations, I demonstrate that an incompressible turbulent flow, in two-dimensional active nematics, consists of an ensemble of vortices ...
Luca Giomi
doaj +6 more sources
Mesoscopic simulations of active nematics. [PDF]
Sci Adv, 2022 Coarse-grained, mesoscale simulations are invaluable for studying soft condensed matter because of their ability to model systems in which a background solvent plays a substantial role but is not the primary interest. Such methods generally model passive solvents; however, far-from-equilibrium systems may also be composed of complex solutes suspended ...
Kozhukhov T, Shendruk TN.
europepmc +6 more sources
Active nematics with deformable particles [PDF]
Soft Matter, 2023 We extend theories of active nematics to incorporate cell shape changes. Sufficiently active systems display regions of active, elongated cells coexisting with regions of passive, circular cells.
Hadjifrangiskou, I +2 more
core +8 more sources
Data-driven quantitative modeling of bacterial active nematics [PDF]
Proceedings of the National Academy of Sciences of the United States of America, 2019 International audienceSignificance Active nematics are nonequilibrium fluids consisting of elongated units driven at the individual scale. They spontaneously exhibit complex spatiotemporal dynamics and have attracted the attention of scientists from many
H P Zhang, Minfeng Xiao, Hugues Chate
exaly +3 more sources
Self-propulsive active nematics. [PDF]
Philos Trans A Math Phys Eng SciIncreasing evidence suggests that active matter exhibits instances of mixed symmetry that cannot be fully described by either polar or nematic formalism. Here, we introduce a minimal model that integrates self-propulsion into the active nematic framework.
de Graaf Sousa N +3 more
europepmc +5 more sources
Active nematics on flat surfaces: From droplet motility and scission to active wetting [PDF]
Physical Review Research, 2023 We consider the dynamics of active nematics droplets on flat surfaces, based on the continuum hydrodynamic theory. We investigate a wide range of dynamical regimes as a function of the activity and droplet size on surfaces characterized by strong ...
Rodrigo C. V. Coelho +2 more
doaj +2 more sources
Control of active nematics [PDF]
, 2021 Active matter describes systems, such as bacterial suspensions, cellular tissue or cytoskeleton biopolymers, that extract energy from their surroundings at the single-particle level and convert it into mechanical work. The resulting active work can be manifested in the form of self-propulsion and stress generation. The continuous injection of energy or
Thijssen, Kristian
openaire +2 more sources
Discontinuous transition to active nematic turbulence [PDF]
Nature CommunicationsActive fluids exhibit chaotic flows at low Reynolds number known as active turbulence. Whereas the statistical properties of the chaotic flows are increasingly well understood, the nature of the transition from laminar to turbulent flows as activity ...
Malcolm Hillebrand, Ricard Alert
doaj +5 more sources
Active Nematics Reinforce the Ratchet Flow in Dense Environments Without Jamming [PDF]
Advanced ScienceThe past decade witnessed a surge in discoveries where biological systems, such as bacteria or living cells, inherently portray active polar or nematic behavior: they prefer to align with each other and form local order during migration.
Yisong Yao +5 more
doaj +2 more sources