Zobrazeno 1 - 10
of 324
pro vyhledávání: '"Simha, R. A."'
Publikováno v:
Phys. Rev. X 11, 031063 (2021)
How fast must an oriented collection of extensile swimmers swim to escape the instability of viscous active suspensions? We show that the answer lies in the dimensionless combination $R=\rho v_0^2/2\sigma_a$, where $\rho$ is the suspension mass densi
Externí odkaz:
http://arxiv.org/abs/1907.03492
Akademický článek
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It was shown in [PRL 114, 138301 (2015)] that a remarkably simple dynamical model exhibits many of the complex flow regimes and non-equilibrium phase transitions characteristic of complex fluids. By removing extraneous detail, this simplest microscop
Externí odkaz:
http://arxiv.org/abs/1609.00560
Autor:
Marchetti, M. C., Joanny, J. -F., Ramaswamy, S., Liverpool, T. B., Prost, J., Rao, Madan, Simha, R. Aditi
In this review we summarize theoretical progress in the field of active matter, placing it in the context of recent experiments. Our approach offers a unified framework for the mechanical and statistical properties of living matter: biofilaments and
Externí odkaz:
http://arxiv.org/abs/1207.2929
We carry out a systematic construction of the coarse-grained dynamical equation of motion for the orientational order parameter for a two-dimensional active nematic, that is a nonequilibrium steady state with uniaxial, apolar orientational order. Usi
Externí odkaz:
http://arxiv.org/abs/0912.2283
We report the complete statistical treatment of a system of particles interacting via Newtonian forces in continuous boundary-driven flow, far from equilibrium. By numerically time-stepping the force-balance equations of a model fluid we measure occu
Externí odkaz:
http://arxiv.org/abs/0911.0830
We study the interplay of activity, order and flow through a set of coarse-grained equations governing the hydrodynamic velocity, concentration and stress fields in a suspension of active, energy-dissipating particles. We make several predictions for
Externí odkaz:
http://arxiv.org/abs/cond-mat/0308529
We construct the equations of motion for the coupled dynamics of order parameter and concentration for the nematic phase of driven particles on a solid surface, and show that they imply (i) giant number fluctuations, with a standard deviation proport
Externí odkaz:
http://arxiv.org/abs/cond-mat/0208573
Autor:
Simha, R. Aditi, Ramaswamy, Sriram
We construct the hydrodynamic equations for {\em suspensions} of self-propelled particles (SPPs) with spontaneous orientational order, and make a number of striking, testable predictions:(i) SPP suspensions with the symmetry of a true {\em nematic} a
Externí odkaz:
http://arxiv.org/abs/cond-mat/0108301
Autor:
Simha, R. Aditi, Ramaswamy, Sriram
Publikováno v:
Phys. Rev. Lett. 83 (1999) 3285
Starting from the time-dependent Ginzburg-Landau (TDGL) equations for a type II superconductor, we derive the equations of motion for the displacement field of a moving vortex lattice without inertia or pinning. We show that it is linearly stable and
Externí odkaz:
http://arxiv.org/abs/cond-mat/9904105