Magnetic particles guided by ellipsoidal AC magnetic fields in a shallow viscous fluid: Controlling trajectories and chain lengths

We study the propulsion of superparamagnetic particles dispersed in a viscous fluid upon the application of an elliptically polarized rotating magnetic field. Reducing the fluid surface tension the particles sediment due to density mismatch and rotate close to the low recipient confining plate. We s...

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Detalles Bibliográficos
Autores principales: Jorge, G.A., Llera, M., Bekeris, V.
Formato: JOUR
Materias:
Chains
Magnetic fields
Magnetism
Viscosity
Viscous flow
AC magnetic fields
Hydrodynamic coupling
Magnetic field vectors
Magnetic particle
Rotating magnetic fields
Single particle
Superparamagnetic particles
Translational motions
Magnetic bubbles
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_03048853_v444_n_p467_Jorge
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_03048853_v444_n_p467_Jorge2023-10-03T15:21:09Z Magnetic particles guided by ellipsoidal AC magnetic fields in a shallow viscous fluid: Controlling trajectories and chain lengths Jorge, G.A. Llera, M. Bekeris, V. Chains Magnetic fields Magnetism Viscosity Viscous flow AC magnetic fields Hydrodynamic coupling Magnetic field vectors Magnetic particle Rotating magnetic fields Single particle Superparamagnetic particles Translational motions Magnetic bubbles We study the propulsion of superparamagnetic particles dispersed in a viscous fluid upon the application of an elliptically polarized rotating magnetic field. Reducing the fluid surface tension the particles sediment due to density mismatch and rotate close to the low recipient confining plate. We study the net translational motion arising from the hydrodynamic coupling with the plate and find that, above a cross over magnetic field, magnetically assembled doublets move faster than single particles. In turn, particles are driven in complex highly controlled trajectories by rotating the plane containing the magnetic field vector. The effect of the field rotation on long self assembled chains is discussed and the alternating breakup and reformation of the particle chains is described. © 2017 Elsevier B.V. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_03048853_v444_n_p467_Jorge
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Chains
Magnetic fields
Magnetism
Viscosity
Viscous flow
AC magnetic fields
Hydrodynamic coupling
Magnetic field vectors
Magnetic particle
Rotating magnetic fields
Single particle
Superparamagnetic particles
Translational motions
Magnetic bubbles
spellingShingle Chains
Magnetic fields
Magnetism
Viscosity
Viscous flow
AC magnetic fields
Hydrodynamic coupling
Magnetic field vectors
Magnetic particle
Rotating magnetic fields
Single particle
Superparamagnetic particles
Translational motions
Magnetic bubbles
Jorge, G.A.
Llera, M.
Bekeris, V.
Magnetic particles guided by ellipsoidal AC magnetic fields in a shallow viscous fluid: Controlling trajectories and chain lengths
topic_facet Chains
Magnetic fields
Magnetism
Viscosity
Viscous flow
AC magnetic fields
Hydrodynamic coupling
Magnetic field vectors
Magnetic particle
Rotating magnetic fields
Single particle
Superparamagnetic particles
Translational motions
Magnetic bubbles
description We study the propulsion of superparamagnetic particles dispersed in a viscous fluid upon the application of an elliptically polarized rotating magnetic field. Reducing the fluid surface tension the particles sediment due to density mismatch and rotate close to the low recipient confining plate. We study the net translational motion arising from the hydrodynamic coupling with the plate and find that, above a cross over magnetic field, magnetically assembled doublets move faster than single particles. In turn, particles are driven in complex highly controlled trajectories by rotating the plane containing the magnetic field vector. The effect of the field rotation on long self assembled chains is discussed and the alternating breakup and reformation of the particle chains is described. © 2017 Elsevier B.V.
format JOUR
author Jorge, G.A.
Llera, M.
Bekeris, V.
author_facet Jorge, G.A.
Llera, M.
Bekeris, V.
author_sort Jorge, G.A.
title Magnetic particles guided by ellipsoidal AC magnetic fields in a shallow viscous fluid: Controlling trajectories and chain lengths
title_short Magnetic particles guided by ellipsoidal AC magnetic fields in a shallow viscous fluid: Controlling trajectories and chain lengths
title_full Magnetic particles guided by ellipsoidal AC magnetic fields in a shallow viscous fluid: Controlling trajectories and chain lengths
title_fullStr Magnetic particles guided by ellipsoidal AC magnetic fields in a shallow viscous fluid: Controlling trajectories and chain lengths
title_full_unstemmed Magnetic particles guided by ellipsoidal AC magnetic fields in a shallow viscous fluid: Controlling trajectories and chain lengths
title_sort magnetic particles guided by ellipsoidal ac magnetic fields in a shallow viscous fluid: controlling trajectories and chain lengths
url http://hdl.handle.net/20.500.12110/paper_03048853_v444_n_p467_Jorge
work_keys_str_mv AT jorgega magneticparticlesguidedbyellipsoidalacmagneticfieldsinashallowviscousfluidcontrollingtrajectoriesandchainlengths
AT lleram magneticparticlesguidedbyellipsoidalacmagneticfieldsinashallowviscousfluidcontrollingtrajectoriesandchainlengths
AT bekerisv magneticparticlesguidedbyellipsoidalacmagneticfieldsinashallowviscousfluidcontrollingtrajectoriesandchainlengths
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