Growth of unstable interfaces in disordered media

The effects of a disordered medium in the growth of unstable interfaces are studied by means of two local models with multiplicative and additive quenched disorder, respectively. For short times and large pushing the multiplicative quenched disorder is equivalent to a time-dependent noise. In this r...

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Detalhes bibliográficos
Autores: Lacasta Palacio, Ana María|||0000-0002-9060-6043, Ramírez de la Piscina Millán, Laureano|||0000-0003-4019-245X, Casademunt, Jaume, Hernández-Machado, Aurora, Rodríguez, M. A.
Formato: artículo
Fecha de publicación:1998
País:España
Recursos:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/2596
Acesso em linha:https://hdl.handle.net/2117/2596
https://dx.doi.org/10.1103/PhysRevE.57.5754
Access Level:acceso abierto
Palavra-chave:Nonlinear systems
Nonlinear dynamics
Interfaces
Disorder
Morphological instability
Sistemes no lineals
Àrees temàtiques de la UPC::Física
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oai_identifier_str oai:upcommons.upc.edu:2117/2596
network_acronym_str ES
network_name_str España
repository_id_str
spelling Growth of unstable interfaces in disordered mediaLacasta Palacio, Ana María|||0000-0002-9060-6043Ramírez de la Piscina Millán, Laureano|||0000-0003-4019-245XCasademunt, JaumeHernández-Machado, AuroraRodríguez, M. A.Nonlinear systemsNonlinear dynamicsInterfacesDisorderMorphological instabilitySistemes no linealsÀrees temàtiques de la UPC::FísicaThe effects of a disordered medium in the growth of unstable interfaces are studied by means of two local models with multiplicative and additive quenched disorder, respectively. For short times and large pushing the multiplicative quenched disorder is equivalent to a time-dependent noise. In this regime, the linear dispersion relation contains a destabilizing contribution introduced by the noise. For long times, the interface always gets pinned. We model the systematics of the pinned shapes by means of an effective nonlinear model. These results show good agreement with numerical simulations. For the additive noise we find numerically that a depinning transition occurs.Peer ReviewedAmerican Physical Society19981998-05-3120092009-02-27journal articlehttp://purl.org/coar/resource_type/c_6501NAhttp://purl.org/coar/version/c_be7fb7dd8ff6fe43info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/2596https://dx.doi.org/10.1103/PhysRevE.57.5754reponame: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:2117/25962026-05-27T15:37:01Z
dc.title.none.fl_str_mv Growth of unstable interfaces in disordered media
title Growth of unstable interfaces in disordered media
spellingShingle Growth of unstable interfaces in disordered media
Lacasta Palacio, Ana María|||0000-0002-9060-6043
Nonlinear systems
Nonlinear dynamics
Interfaces
Disorder
Morphological instability
Sistemes no lineals
Àrees temàtiques de la UPC::Física
title_short Growth of unstable interfaces in disordered media
title_full Growth of unstable interfaces in disordered media
title_fullStr Growth of unstable interfaces in disordered media
title_full_unstemmed Growth of unstable interfaces in disordered media
title_sort Growth of unstable interfaces in disordered media
dc.creator.none.fl_str_mv Lacasta Palacio, Ana María|||0000-0002-9060-6043
Ramírez de la Piscina Millán, Laureano|||0000-0003-4019-245X
Casademunt, Jaume
Hernández-Machado, Aurora
Rodríguez, M. A.
author Lacasta Palacio, Ana María|||0000-0002-9060-6043
author_facet Lacasta Palacio, Ana María|||0000-0002-9060-6043
Ramírez de la Piscina Millán, Laureano|||0000-0003-4019-245X
Casademunt, Jaume
Hernández-Machado, Aurora
Rodríguez, M. A.
author_role author
author2 Ramírez de la Piscina Millán, Laureano|||0000-0003-4019-245X
Casademunt, Jaume
Hernández-Machado, Aurora
Rodríguez, M. A.
author2_role author
author
author
author
dc.subject.none.fl_str_mv Nonlinear systems
Nonlinear dynamics
Interfaces
Disorder
Morphological instability
Sistemes no lineals
Àrees temàtiques de la UPC::Física
topic Nonlinear systems
Nonlinear dynamics
Interfaces
Disorder
Morphological instability
Sistemes no lineals
Àrees temàtiques de la UPC::Física
description The effects of a disordered medium in the growth of unstable interfaces are studied by means of two local models with multiplicative and additive quenched disorder, respectively. For short times and large pushing the multiplicative quenched disorder is equivalent to a time-dependent noise. In this regime, the linear dispersion relation contains a destabilizing contribution introduced by the noise. For long times, the interface always gets pinned. We model the systematics of the pinned shapes by means of an effective nonlinear model. These results show good agreement with numerical simulations. For the additive noise we find numerically that a depinning transition occurs.
publishDate 1998
dc.date.none.fl_str_mv 1998
1998-05-31
2009
2009-02-27
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
NA
http://purl.org/coar/version/c_be7fb7dd8ff6fe43
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/2596
https://dx.doi.org/10.1103/PhysRevE.57.5754
url https://hdl.handle.net/2117/2596
https://dx.doi.org/10.1103/PhysRevE.57.5754
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)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300724

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