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Wave propagation in a medium with disordered excitability
dc.contributor.author | Sendiña-Nadal, I. |
dc.contributor.author | Pérez Muñuzuri, Alberto |
dc.contributor.author | Vives, D. |
dc.contributor.author | Pérez Muñuzuri, Vicente |
dc.contributor.author | Casademunt, Jaume |
dc.contributor.author | Ramírez de la Piscina Millán, Laureano |
dc.contributor.author | Sancho, Jose Maria |
dc.contributor.author | Sagués Mestre, Francesc |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Física Aplicada |
dc.date.accessioned | 2012-11-20T13:06:17Z |
dc.date.available | 2012-11-20T13:06:17Z |
dc.date.created | 1998-06-30 |
dc.date.issued | 1998-06-30 |
dc.identifier.citation | Sendina-Nadal, I.; Pérez-Muñuzuri, A.P.; Vives, D.; Pérez-Muñuzuri, V.; Casademunt, J.; Ramírez-Piscina, L.; Sancho, J.M.; Sagués, F. "Wave propagation in a medium with disordered excitability". Physical Review Letters, 1998, vol. 80, núm. 24, p.5437-5440. ISSN:0031-9007 |
dc.identifier.issn | 0031-9007 |
dc.identifier.uri | http://hdl.handle.net/2117/16977 |
dc.description.abstract | 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. |
dc.format.extent | 5437-5440 |
dc.language.iso | eng |
dc.publisher | American Physical Society |
dc.subject | Àrees temàtiques de la UPC::Física::Mecànica quàntica |
dc.subject.lcsh | Waves |
dc.subject.other | Chemical waves |
dc.subject.other | Disorder |
dc.subject.other | Excitable media |
dc.subject.other | Belousov-Zhabotinsky reaction |
dc.title | Wave propagation in a medium with disordered excitability |
dc.type | Article |
dc.subject.lemac | Ones |
dc.contributor.group | Universitat Politècnica de Catalunya. NOLIN - Física No-Lineal i Sistemes Fora de l'Equilibri |
dc.description.peerreviewed | Peer Reviewed |
dc.subject.ams | Ones |
dc.relation.publisherversion | http://prl.aps.org/pdf/PRL/v80/i24/p5437_1 |
dc.rights.access | Open Access |
dc.description.version | Preprint |
local.personalitzacitacio | true |
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