Results 71 to 80 of about 2,992 (173)
Intrinsic free energy in active nematics [PDF]
EPL (Europhysics Letters), 2015 Accepted for publication in Europhysics ...
Sumesh P. Thampi +3 more
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Dynamical arrest in active nematic turbulence
Physical Review ResearchActive fluids display spontaneous turbulentlike flows known as active turbulence. Recent work revealed that these flows have universal features, independent of the material properties and of the presence of topological defects.
Ido Lavi +3 more
doaj +1 more source
The low noise phase of a 2d active nematic
, 2017 We consider a collection of self-driven apolar particles on a substrate that organize into an active nematic phase at sufficiently high density or low noise.
Marchetti, M. Cristina +2 more
core +1 more source
Role of friction in multidefect ordering
, 2020 We use continuum simulations to study the impact of friction on the ordering of defects in an active nematic. Even in a frictionless system, +1/2 defects tend to align side-by-side and orient antiparallel reflecting their propensity to form, and ...
Nejad, Mehrana R. +2 more
core +1 more source
Large-scale chaos and fluctuations in active nematics [PDF]
, 2013 We show that "dry" active nematics, e.g. collections of shaken elongated granular particles, exhibit large-scale spatiotemporal chaos made of interacting dense, ordered, band-like structures in a parameter region including the linear onset of nematic ...
Aranson, Igor S. +5 more
core +3 more sources
Active nematic gel with quenched disorder
Physical Review E, 2022 With quenched disorder, we introduce two-dimensional active nematics suspended in an incompressible fluid. We write the coarse-grained hydrodynamic equations of motion for slow variables, viz. density, orientation and flow fields. The quenched disorder is introduced such that it interacts with the local orientation at every point with some strength ...
Sameer Kumar, Shradha Mishra
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Dancing disclinations in confined active nematics [PDF]
Soft Matter, 2017 The spontaneous emergence of collective flows is a generic property of active fluids and often leads to chaotic flow patterns characterised by swirls, jets, and topological disclinations in their orientation field. However, the ability to achieve structured flows and ordered disclinations is of particular importance in the design and control of active ...
Tyler N. Shendruk +3 more
openaire +6 more sources
Scaling Regimes of Active Turbulence with External Dissipation
Physical Review X, 2021 Active fluids exhibit complex turbulentlike flows at low Reynolds number. Recent work predicted that 2D active nematic turbulence follows scaling laws with universal exponents.
Berta Martínez-Prat +7 more
doaj +1 more source
Morphodynamics of active nematic fluid surfaces
Journal of Fluid Mechanics, 2023 Morphodynamic equations governing the behaviour of active nematic fluids on deformable curved surfaces are constructed in the large deformation limit. Emphasis is placed on the formulation of objective rates that account for normal deformations whilst ensuring that tangential flows are Eulerian, and the use of the surface derivative (rather than the ...
Sami C. Al-Izzi, Richard G. Morris
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, 2016 The physics of nematic liquid crystals has been subject of intensive research since the late 19th century. However, because of the limitations of chemistry the focus has been centered around uni- and biaxial nematics associated with constituents bearing ...
Liu, Ke +4 more
core +2 more sources