Nature of inclined growth in thin-layer electrodeposition under uniform magnetic fields
Electrochemical deposition (ECD) in thin cells in a vertical position relative to gravity, subject to an external uniform magnetic field, yields a growth pattern formation with dense branched morphology with branches tilted in the direction of the magnetic force. We study the nature of the inclined...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_15393755_v86_n5_p_Soba |
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todo:paper_15393755_v86_n5_p_Soba2023-10-03T16:22:42Z Nature of inclined growth in thin-layer electrodeposition under uniform magnetic fields Soba, A. González, G. Calivar, L. Marshall, G. Concentrated solution Electrochemical deposition Gravitational forces Growth orientations Growth patterns Magnetic force Particle trajectories Symmetric vortex Thin cells Thin-layer electrodeposition Vertical positions Vortex symmetry Experiments Magnetic fields Metal ions Reduction Vortex flow Electrochemical deposition (ECD) in thin cells in a vertical position relative to gravity, subject to an external uniform magnetic field, yields a growth pattern formation with dense branched morphology with branches tilted in the direction of the magnetic force. We study the nature of the inclined growth through experiments and theory. Experiments in ECD, in the absence of magnetic forces, reveal that a branch grows by allowing fluid to penetrate its tip and to be ejected from the sides through a pair of symmetric vortices attached to the tip. The upper vortices zone defines an arch separating an inner zone ion depleted and an outer zone in a funnel-like form with a concentrated solution through which metal ions are carried into the tip. When a magnetic field is turned on, vortex symmetry is broken, one vortex becoming weaker than the other, inducing an inclination of the funnel. Consequently, particles entering the funnel give rise to branch growth tilted in the same direction. Theory predicts, in the absence of a magnetic force, funnel symmetry induced through symmetric vortices driven by electric and gravitational forces; when the magnetic force is on, it is composed with the pair of clockwise and counterclockwise vortices, reducing or amplifying one or the other. In turn, funnel tilting modifies particle trajectories, thus, growth orientation. © 2012 American Physical Society. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_15393755_v86_n5_p_Soba |
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Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Concentrated solution Electrochemical deposition Gravitational forces Growth orientations Growth patterns Magnetic force Particle trajectories Symmetric vortex Thin cells Thin-layer electrodeposition Vertical positions Vortex symmetry Experiments Magnetic fields Metal ions Reduction Vortex flow |
| spellingShingle |
Concentrated solution Electrochemical deposition Gravitational forces Growth orientations Growth patterns Magnetic force Particle trajectories Symmetric vortex Thin cells Thin-layer electrodeposition Vertical positions Vortex symmetry Experiments Magnetic fields Metal ions Reduction Vortex flow Soba, A. González, G. Calivar, L. Marshall, G. Nature of inclined growth in thin-layer electrodeposition under uniform magnetic fields |
| topic_facet |
Concentrated solution Electrochemical deposition Gravitational forces Growth orientations Growth patterns Magnetic force Particle trajectories Symmetric vortex Thin cells Thin-layer electrodeposition Vertical positions Vortex symmetry Experiments Magnetic fields Metal ions Reduction Vortex flow |
| description |
Electrochemical deposition (ECD) in thin cells in a vertical position relative to gravity, subject to an external uniform magnetic field, yields a growth pattern formation with dense branched morphology with branches tilted in the direction of the magnetic force. We study the nature of the inclined growth through experiments and theory. Experiments in ECD, in the absence of magnetic forces, reveal that a branch grows by allowing fluid to penetrate its tip and to be ejected from the sides through a pair of symmetric vortices attached to the tip. The upper vortices zone defines an arch separating an inner zone ion depleted and an outer zone in a funnel-like form with a concentrated solution through which metal ions are carried into the tip. When a magnetic field is turned on, vortex symmetry is broken, one vortex becoming weaker than the other, inducing an inclination of the funnel. Consequently, particles entering the funnel give rise to branch growth tilted in the same direction. Theory predicts, in the absence of a magnetic force, funnel symmetry induced through symmetric vortices driven by electric and gravitational forces; when the magnetic force is on, it is composed with the pair of clockwise and counterclockwise vortices, reducing or amplifying one or the other. In turn, funnel tilting modifies particle trajectories, thus, growth orientation. © 2012 American Physical Society. |
| format |
JOUR |
| author |
Soba, A. González, G. Calivar, L. Marshall, G. |
| author_facet |
Soba, A. González, G. Calivar, L. Marshall, G. |
| author_sort |
Soba, A. |
| title |
Nature of inclined growth in thin-layer electrodeposition under uniform magnetic fields |
| title_short |
Nature of inclined growth in thin-layer electrodeposition under uniform magnetic fields |
| title_full |
Nature of inclined growth in thin-layer electrodeposition under uniform magnetic fields |
| title_fullStr |
Nature of inclined growth in thin-layer electrodeposition under uniform magnetic fields |
| title_full_unstemmed |
Nature of inclined growth in thin-layer electrodeposition under uniform magnetic fields |
| title_sort |
nature of inclined growth in thin-layer electrodeposition under uniform magnetic fields |
| url |
http://hdl.handle.net/20.500.12110/paper_15393755_v86_n5_p_Soba |
| work_keys_str_mv |
AT sobaa natureofinclinedgrowthinthinlayerelectrodepositionunderuniformmagneticfields AT gonzalezg natureofinclinedgrowthinthinlayerelectrodepositionunderuniformmagneticfields AT calivarl natureofinclinedgrowthinthinlayerelectrodepositionunderuniformmagneticfields AT marshallg natureofinclinedgrowthinthinlayerelectrodepositionunderuniformmagneticfields |
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