Stable levitation of a magnet over a pair of counter-rotating cylinders: The Alcon levitator

The Alcon levitator is an experimental setup that demonstrates the levitation of a bar magnet above two counter-rotating metal cylinders. Stable levitation is achieved only above a critical angular velocity – about 9000 rpm in our setup. The precise physical mechanism behind this stability remains u...

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Detalles Bibliográficos
Autores: Pérez Izquierdo, Alberto Tomás, García Sánchez, Pablo
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2025
País:España
Institución:Universidad de Sevilla (US)
Repositorio:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/179330
Acceso en línea:https://hdl.handle.net/11441/179330
https://doi.org/10.1063/5.0275041
Access Level:acceso abierto
Palabra clave:Magnetic levitation
Eddy currents
Alcon levitator
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spelling Stable levitation of a magnet over a pair of counter-rotating cylinders: The Alcon levitatorPérez Izquierdo, Alberto TomásGarcía Sánchez, PabloMagnetic levitationEddy currentsAlcon levitatorThe Alcon levitator is an experimental setup that demonstrates the levitation of a bar magnet above two counter-rotating metal cylinders. Stable levitation is achieved only above a critical angular velocity – about 9000 rpm in our setup. The precise physical mechanism behind this stability remains under investigation. In this work, we combine theoretical analysis and numerical simulations to examine the mechanism, which originates from the interplay between lift and braking forces acting on the magnet and their dependence on the magnetic Reynolds number, i.e., the angular velocity of the cylinders.American Institute of PhysicsElectrónica y ElectromagnetismoFQM253: Electrohidrodinámica y Medios Granulares CohesivosMinisterio de Ciencia y Tecnología (MCYT). España2025info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/pdfhttps://hdl.handle.net/11441/179330https://doi.org/10.1063/5.0275041reponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésJournal of Applied of Physics, 138 (19), 194904.PID2022-138890NB-I00https://pubs.aip.org/aip/jap/article/138/19/194904/3373144/Stable-levitation-of-a-magnet-over-a-pair-ofinfo:eu-repo/semantics/openAccessoai:idus.us.es:11441/1793302026-06-17T12:51:07Z
dc.title.none.fl_str_mv Stable levitation of a magnet over a pair of counter-rotating cylinders: The Alcon levitator
title Stable levitation of a magnet over a pair of counter-rotating cylinders: The Alcon levitator
spellingShingle Stable levitation of a magnet over a pair of counter-rotating cylinders: The Alcon levitator
Pérez Izquierdo, Alberto Tomás
Magnetic levitation
Eddy currents
Alcon levitator
title_short Stable levitation of a magnet over a pair of counter-rotating cylinders: The Alcon levitator
title_full Stable levitation of a magnet over a pair of counter-rotating cylinders: The Alcon levitator
title_fullStr Stable levitation of a magnet over a pair of counter-rotating cylinders: The Alcon levitator
title_full_unstemmed Stable levitation of a magnet over a pair of counter-rotating cylinders: The Alcon levitator
title_sort Stable levitation of a magnet over a pair of counter-rotating cylinders: The Alcon levitator
dc.creator.none.fl_str_mv Pérez Izquierdo, Alberto Tomás
García Sánchez, Pablo
author Pérez Izquierdo, Alberto Tomás
author_facet Pérez Izquierdo, Alberto Tomás
García Sánchez, Pablo
author_role author
author2 García Sánchez, Pablo
author2_role author
dc.contributor.none.fl_str_mv Electrónica y Electromagnetismo
FQM253: Electrohidrodinámica y Medios Granulares Cohesivos
Ministerio de Ciencia y Tecnología (MCYT). España
dc.subject.none.fl_str_mv Magnetic levitation
Eddy currents
Alcon levitator
topic Magnetic levitation
Eddy currents
Alcon levitator
description The Alcon levitator is an experimental setup that demonstrates the levitation of a bar magnet above two counter-rotating metal cylinders. Stable levitation is achieved only above a critical angular velocity – about 9000 rpm in our setup. The precise physical mechanism behind this stability remains under investigation. In this work, we combine theoretical analysis and numerical simulations to examine the mechanism, which originates from the interplay between lift and braking forces acting on the magnet and their dependence on the magnetic Reynolds number, i.e., the angular velocity of the cylinders.
publishDate 2025
dc.date.none.fl_str_mv 2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/11441/179330
https://doi.org/10.1063/5.0275041
url https://hdl.handle.net/11441/179330
https://doi.org/10.1063/5.0275041
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Journal of Applied of Physics, 138 (19), 194904.
PID2022-138890NB-I00
https://pubs.aip.org/aip/jap/article/138/19/194904/3373144/Stable-levitation-of-a-magnet-over-a-pair-of
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Institute of Physics
publisher.none.fl_str_mv American Institute of Physics
dc.source.none.fl_str_mv reponame:idUS. Depósito de Investigación de la Universidad de Sevilla
instname:Universidad de Sevilla (US)
instname_str Universidad de Sevilla (US)
reponame_str idUS. Depósito de Investigación de la Universidad de Sevilla
collection idUS. Depósito de Investigación de la Universidad de Sevilla
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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