Upstream swimming in microbiological flows

Abstract

Interactions between microorganisms and their complex flowing environments are essential in many biological systems. We develop a model for microswimmer dynamics in non-Newtonian Poiseuille flows. We predict that swimmers in shear-thickening (-thinning) fluids migrate upstream more (less) quickly than in Newtonian fluids and demonstrate that viscoelastic normal stress differences reorient swimmers causing them to migrate upstream at the centreline, in contrast to well-known boundary accumulation in quiescent Newtonian fluids. Based on these observations, we suggest a sorting mechanism to select microbes by swimming speed.

Four figures and 56 references

References in corpus (11)

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Cited by in corpus (39)

• Emergent behavior in active colloids
• Dynamics of self-propelled Janus particles in viscoelastic fluids
• Oscillatory surface rheotaxis of swimming E. coli bacteria
• Squirming through shear-thinning fluids
• Hydrodynamics of Micro-swimmers in Films
• Active particles in viscosity gradients
• An active particle in a complex fluid
• Culinary fluid mechanics and other currents in food science
• Sorting motile rods by activity
• Trapping and sorting active particles: motility-induced condensation & smectic defects
• Oscillatory rheotaxis of active droplets in microchannels
• Brownian motion of a circle swimmer in a harmonic trap
• State diagram of a three-sphere microswimmer in a channel
• Reinforcement learning of optimal active particle navigation
• Force moments of an active particle in a complex fluid
• Dynamical density functional theory for circle swimmers
• Jeffery's orbits and microswimmers in flows: A theoretical review
• Tuning upstream swimming of micro-robots by shape and cargo size
• Active matter in a viscoelastic environment
• Designing, Synthesizing and Modeling Active Fluids
• Behavior of active filaments near solid-boundary under linear shear flow
• Frequency-dependent higher-order Stokes singularities near a planar elastic boundary: implications for the hydrodynamics of an active microswimmer near an elastic interface
• Active particles in non-inertial frames: how to self-propel on a carousel
• Spontaneous membrane formation and self-encapsulation of active rods in an inhomogeneous motility field
• Diffusion of chiral active particles in a Poiseuille flow
• Population splitting of rodlike swimmers in Couette flow
• The hydrodynamics of slender swimmers near deformable interfaces
• Alignment-Induced Self-Organization of Autonomously Steering Microswimmers: Turbulence, Vortices, and Jets
• Swinging Motion of Active Deformable Particles in Poiseuille Flow
• Active particle motion in Poiseuille flow through rectangular channels
• Confinement induced three-dimensional trajectories of microswimmers in rectangular channels
• Orientational dynamics and rheology of active suspensions in weakly viscoelastic flows
• Stealthy Movements and Concealed Swarms of Swimming micro-Robots
• Dynamics of Deformable Active Particles under External Flow Field
• Vortex pattern stabilization in thin films resulting from shear thickening of active suspensions
• Active dipolar spheroids in shear flow and transverse field: Population splitting, cross-stream migration and orientational pinning
• Rheologically tuned modes of collective transport in active viscoelastic films
• Unified description of viscous, viscoelastic, or elastic thin active films on substrates
• Microswimming in viscoelastic fluids