Dynamics of a microswimmer-microplatelet composite
arXiv:2001.06646 · doi:10.1063/1.5142054
Abstract
Guiding active microswimmers by external fields to requested target locations is a promising strategy to realize complex transport on the microscale. To this end, one possibility consists of attaching the microswimmers to orientable passive components. Accordingly, we analyze theoretically, using a minimal model, the dynamics of a microswimmer when rigidly attached tangentially to a (significantly larger) microplatelet, here represented by a thin circular disk. On this way, we determine the flow field in the whole space induced by a Stokeslet that is located above the center of a spatially fixed rigid disk of no-slip surface conditions. Finally, we determine and analyze possible trajectories of the overall composite. To this end, the platelet is additionally endowed with a permanent magnetic moment, which allows to steer the motion of the whole composite by a homogeneous external magnetic field. As previous experimental studies suggest, related setups may be helpful to guide sperm cells to requested targets or for the purpose of coordinated drug delivery.
18 pages, 4 figures. To appear in Phys. Fluids
References in corpus (39)
- Active Particles in Complex and Crowded Environments
- The hydrodynamics of swimming microorganisms
- Physics of Microswimmers - Single Particle Motion and Collective Behavior
- Active Motion of Janus Particle by Self-thermophoresis in Defocused Laser Beam
- Propulsion of a molecular machine by asymmetric distribution of reaction--products
- Designing phoretic micro- and nano-swimmers
- Sperm-hybrid micromotor for drug delivery in the female reproductive tract
- A Simplest Swimmer at Low Reynolds Number: Three Linked Spheres
- Bacterial hydrodynamics
- Emergent behavior in active colloids
- Tuned, driven, and active soft matter
- Gravitaxis of asymmetric self-propelled colloidal particles
- 'Fuelled' motion: phoretic motility and collective behaviour of active colloids
- Analytic results for the three-sphere swimmer at low Reynolds number
- Steering chiral swimmers along noisy helical paths
- Dynamical Density Functional Theory For Microswimmers
- The self-propelled Brownian spinning top: dynamics of a biaxial swimmer at low Reynolds numbers
- Derivation of a hydrodynamic theory for mesoscale dynamics in microswimmer suspensions
- Realization of the Najafi-Golestanian microswimmer
- Cooperative Self-Propulsion of Active and Passive Rotors
- Hydrodynamic length-scale selection and effective viscosity in microswimmer suspensions
- Diffusion of active chiral particles
- Self-diffusiophoresis of Janus particles in near-critical mixtures
- Autophoretic motion in three dimensions
- Kinematics of the swimming of Spiroplasma
- Active Brownian motion with orientation-dependent motility: theory and experiments
- Helical paths, gravitaxis, and separation phenomena for mass-anisotropic self-propelling colloids: experiment versus theory
- Swimming trajectories of a three-sphere microswimmer near a wall
- State diagram of a three-sphere microswimmer in a channel
- Hydrodynamic interaction between particles near elastic interfaces
- Efficiency limits of the three-sphere swimmer
- Hydrodynamic mobility of a sphere moving on the centerline of an elastic tube
- Hydrodynamic coupling and rotational mobilities near planar elastic membranes
- Active particles in non-inertial frames: how to self-propel on a carousel
- Axisymmetric flow due to a Stokeslet near a finite-sized elastic membrane
- Optimal motion of triangular magnetocapillary swimmers
- Flow properties and hydrodynamic interactions of rigid spherical microswimmers
- A general perturbative approach for bead-based microswimmers reveals rich self-propulsion phenomena
- A note on forces exerted by a Stokeslet on confining boundaries
Cited by in corpus (12)
- Towards an analytical description of active microswimmers in clean and in surfactant-covered drops
- Optimal navigation strategies for microswimmers on curved manifolds
- Axisymmetric Stokes flow due to a point-force singularity acting between two coaxially positioned rigid no-slip disks
- Active polar flock with birth and death
- Steady azimuthal flow field induced by a rotating sphere near a rigid disk or inside a gap between two coaxially positioned rigid disks
- Diffusiophoretic propulsion of an isotropic active colloidal particle near a finite-sized disk embedded in a planar fluid-fluid interface
- Asymmetric Stokes flow induced by a transverse point-force acting near a finite-sized elastic membrane
- Axisymmetric monopole and dipole flow singularities in proximity of a stationary no-slip plate immersed in a Brinkman fluid
- Hydrodynamic efficiency limit on a Marangoni surfer
- Rotational dynamics of a disk in a thin film of weakly nematic fluid subject to linear friction
- Stability and Spatial Autocorrelations of Suspensions of Microswimmers with Heterogeneous Spin
- Slow uniform flow of a rarefied gas past an infinitely thin circular disk