Wave propagation in a medium with disordered excitability
The effect of quenched disorder on the propagation of autowaves in excitable media is studied both experimentally and numerically in relation to the light-sensitive Belousov-Zhabotinsky reaction. The spatial disorder is introduced through a random distribution with two different levels of transmitta...
| Autores: | , , , , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Fecha de publicación: | 1998 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/16977 |
| Acceso en línea: | https://hdl.handle.net/2117/16977 |
| Access Level: | acceso abierto |
| Palabra clave: | Waves Chemical waves Disorder Excitable media Belousov-Zhabotinsky reaction Ones Àrees temàtiques de la UPC::Física::Mecànica quàntica |
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Wave propagation in a medium with disordered excitabilitySendiña-Nadal, I.Pérez Muñuzuri, AlbertoVives, D.Pérez Muñuzuri, VicenteCasademunt, JaumeRamírez de la Piscina Millán, Laureano|||0000-0003-4019-245XSancho, Jose MariaSagués Mestre, FrancescWavesChemical wavesDisorderExcitable mediaBelousov-Zhabotinsky reactionOnesOnesÀrees temàtiques de la UPC::Física::Mecànica quànticaThe effect of quenched disorder on the propagation of autowaves in excitable media is studied both experimentally and numerically in relation to the light-sensitive Belousov-Zhabotinsky reaction. The spatial disorder is introduced through a random distribution with two different levels of transmittance. In one dimension the (time-averaged) wave speed is smaller than the corresponding to a homogeneous medium with the mean excitability. Contrarily, in two dimensions the velocity increases due to the roughening of the front. Results are interpreted using kinematic and scaling arguments. In particular, for d 2 we verify a theoretical prediction of a power-law dependence for the relative change of the propagation speed on the disorder amplitude.Peer ReviewedAmerican Physical Society19981998-06-3020122012-11-20journal articlehttp://purl.org/coar/resource_type/c_6501AOhttp://purl.org/coar/version/c_b1a7d7d4d402bcceinfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/16977reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/169772026-05-27T15:37:01Z |
| dc.title.none.fl_str_mv |
Wave propagation in a medium with disordered excitability |
| title |
Wave propagation in a medium with disordered excitability |
| spellingShingle |
Wave propagation in a medium with disordered excitability Sendiña-Nadal, I. Waves Chemical waves Disorder Excitable media Belousov-Zhabotinsky reaction Ones Ones Àrees temàtiques de la UPC::Física::Mecànica quàntica |
| title_short |
Wave propagation in a medium with disordered excitability |
| title_full |
Wave propagation in a medium with disordered excitability |
| title_fullStr |
Wave propagation in a medium with disordered excitability |
| title_full_unstemmed |
Wave propagation in a medium with disordered excitability |
| title_sort |
Wave propagation in a medium with disordered excitability |
| dc.creator.none.fl_str_mv |
Sendiña-Nadal, I. Pérez Muñuzuri, Alberto Vives, D. Pérez Muñuzuri, Vicente Casademunt, Jaume Ramírez de la Piscina Millán, Laureano|||0000-0003-4019-245X Sancho, Jose Maria Sagués Mestre, Francesc |
| author |
Sendiña-Nadal, I. |
| author_facet |
Sendiña-Nadal, I. Pérez Muñuzuri, Alberto Vives, D. Pérez Muñuzuri, Vicente Casademunt, Jaume Ramírez de la Piscina Millán, Laureano|||0000-0003-4019-245X Sancho, Jose Maria Sagués Mestre, Francesc |
| author_role |
author |
| author2 |
Pérez Muñuzuri, Alberto Vives, D. Pérez Muñuzuri, Vicente Casademunt, Jaume Ramírez de la Piscina Millán, Laureano|||0000-0003-4019-245X Sancho, Jose Maria Sagués Mestre, Francesc |
| author2_role |
author author author author author author author |
| dc.subject.none.fl_str_mv |
Waves Chemical waves Disorder Excitable media Belousov-Zhabotinsky reaction Ones Ones Àrees temàtiques de la UPC::Física::Mecànica quàntica |
| topic |
Waves Chemical waves Disorder Excitable media Belousov-Zhabotinsky reaction Ones Ones Àrees temàtiques de la UPC::Física::Mecànica quàntica |
| description |
The effect of quenched disorder on the propagation of autowaves in excitable media is studied both experimentally and numerically in relation to the light-sensitive Belousov-Zhabotinsky reaction. The spatial disorder is introduced through a random distribution with two different levels of transmittance. In one dimension the (time-averaged) wave speed is smaller than the corresponding to a homogeneous medium with the mean excitability. Contrarily, in two dimensions the velocity increases due to the roughening of the front. Results are interpreted using kinematic and scaling arguments. In particular, for d 2 we verify a theoretical prediction of a power-law dependence for the relative change of the propagation speed on the disorder amplitude. |
| publishDate |
1998 |
| dc.date.none.fl_str_mv |
1998 1998-06-30 2012 2012-11-20 |
| dc.type.none.fl_str_mv |
journal article http://purl.org/coar/resource_type/c_6501 AO http://purl.org/coar/version/c_b1a7d7d4d402bcce |
| dc.type.openaire.fl_str_mv |
info:eu-repo/semantics/article |
| format |
article |
| dc.identifier.none.fl_str_mv |
https://hdl.handle.net/2117/16977 |
| url |
https://hdl.handle.net/2117/16977 |
| dc.language.none.fl_str_mv |
Inglés eng |
| language_invalid_str_mv |
Inglés |
| language |
eng |
| dc.rights.none.fl_str_mv |
open access http://purl.org/coar/access_right/c_abf2 |
| dc.rights.openaire.fl_str_mv |
info:eu-repo/semantics/openAccess |
| rights_invalid_str_mv |
open access http://purl.org/coar/access_right/c_abf2 |
| eu_rights_str_mv |
openAccess |
| dc.format.none.fl_str_mv |
application/pdf |
| dc.publisher.none.fl_str_mv |
American Physical Society |
| publisher.none.fl_str_mv |
American Physical Society |
| dc.source.none.fl_str_mv |
reponame:UPCommons. Portal del coneixement obert de la UPC instname:Universitat Politècnica de Catalunya (UPC) |
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Universitat Politècnica de Catalunya (UPC) |
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UPCommons. Portal del coneixement obert de la UPC |
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UPCommons. Portal del coneixement obert de la UPC |
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| _version_ |
1869424635483783168 |
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15,300724 |