Hydrodynamics of polymers in an active bath

Abstract

The conformational and dynamical properties of active polymers in solution are determined by the nature of the activity, and the behavior of polymers with self-propelled, active Brownian particle-type monomers differs qualitatively from that of polymers with monomers driven externally by colored noise forces. We present simulation and theoretical results for polymers in solution in the presence of external active noise. In simulations, a semiflexible bead-spring chain is considered, in analytical calculations, a continuous linear wormlike chain. Activity is taken into account by independent monomer/site velocities, with orientations changing in a diffusive manner. In simulations, hydrodynamic interactions (HI) are taken into account by the Rotne-Prager-Yamakawa tensor, or by an implementation of the active polymer in the multiparticle collision dynamics approach for fluids. To arrive at an analytical solution, the preaveraged Oseen tensor is employed. The active process implies a dependence of the stationary-state properties on HI via polymer relaxation times. With increasing activity, HI lead to an enhanced swelling of flexible polymers, and the conformational properties differ substantially from those of polymers with self-propelled monomers in presence of HI or free-draining polymers. The polymer mean square displacement is enhanced by HI. Over a wide range of time scales, hydrodynamics leads to a subdiffusive regime of the site mean square displacement for flexible active polymers, with an exponent of (5/7), larger than that of the Rouse (1/2) and Zimm (2/3) models of passive polymers.

arXiv comment16 pages, 11 figures

References in corpus (41)

• Active Particles in Complex and Crowded Environments
• Motility-Induced Phase Separation
• Physics of Microswimmers - Single Particle Motion and Collective Behavior
• Active Brownian Particles. From Individual to Collective Stochastic Dynamics
• How far from equilibrium is active matter?
• The 2019 Motile Active Matter Roadmap
• Phase behaviour of active Brownian particles: The role of dimensionality
• Computational models for active matter
• Pressure and Phase Equilibria in Interacting Active Brownian Spheres
• Full phase diagram of active Brownian disks: from melting to motility-induced phase separation
• Broken detailed balance and non-equilibrium dynamics in living systems
• Crystallization in a dense suspension of self-propelled particles
• Dynamics of Self-Propelled Particles Under Strong Confinement
• Cooperative Motion of Active Brownian Spheres in Three-Dimensional Dense Suspensions
• Self-propelled Worm-like Filaments: Spontaneous Spiral Formation, Structure, and Dynamics
• Multi-Particle Collision Dynamics -- a Particle-Based Mesoscale Simulation Approach to the Hydrodynamics of Complex Fluids
• Non-equilibrium microtubule fluctuations in a model cytoskeleton
• Globule-like conformation and enhanced diffusion of active polymers
• Virial pressure in systems of active Brownian particles
• Conformational properties of active semiflexible polymers
• Small activity differences drive phase separation in active-passive polymer mixtures
• How does a flexible chain of active particles swell?
• Unusual swelling of a polymer in a bacterial bath
• Flagellar Dynamics of Chains of Active Janus Particles Fueled by an AC electric field
• Activity induced collapse and re-expansion of rigid polymers
• Facilitation of polymer looping and giant polymer diffusivity in crowded solutions of active particles
• Traveling fronts in active-passive particle mixtures
• Non-conservative forces and effective temperatures in active polymers
• Structure and dynamics of a self-propelled semiflexible filament
• Chain reconfiguration in active noise
• Mechanical pressure and momentum conservation in dry active matter
• Active Colloidal Molecules
• Phase behavior of active Brownian disks, spheres, and dumbbells
• Active Brownian filaments with hydrodynamic interactions: conformations and dynamics
• Stress Tensors of Multiparticle Collision Dynamics Fluids
• End-monomer dynamics in semiflexible polymers
• Active dumbbells: dynamics and morphology in the coexisting region
• Local stress and pressure in an inhomogeneous system of spherical active Brownian particles
• Activity-induced clustering in model dumbbell swimmers: The role of hydrodynamic interactions
• Getting drowned in a swirl: deformable bead-spring model microswimmers in external flow fields
• Steady state sedimentation of ultrasoft colloids

Cited by in corpus (9)

• The physics of active polymers and filaments
• Tangentially Driven Active Polar Linear Polymers -- An Analytical Study
• Time-dependent properties of interacting active matter: dynamical behavior of one-dimensional systems of self-propelled particles
• Dynamics of Active Polar Ring Polymers
• Simulating wet active polymers by multiparticle collision dynamics
• Characteristic features of self-avoiding active Brownian polymers under linear shear flow
• Hydrodynamics of Immiscible Binary Fluids with Viscosity Contrast: A multiparticle collision dynamics approach
• Spiral folding of a flexible chain of chiral active particles
• Active dynamics of charged macromolecules