Generation of dynamic structures in nonequilibrium reactive membranes

We present a nonequlibrium approach for the study of a flexible bilayer whose two components induce distinct curvatures. In turn, the two components are interconverted by an externally promoted reaction. Phase separation of the two species in the surface results in the growth of domains characterize...

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Detalles Bibliográficos
Autores: Reigada Sanz, Ramon, Buceta Fernández, Javier, Lindenberg, Katja
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2005
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/18934
Acceso en línea:https://hdl.handle.net/2445/18934
Access Level:acceso abierto
Palabra clave:Biofísica
Física mèdica
Aparells i instruments científics
Química física
Biophysics
Medical physics
Scientific apparatus and instruments
Physical chemistry
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spelling Generation of dynamic structures in nonequilibrium reactive membranesReigada Sanz, RamonBuceta Fernández, JavierLindenberg, KatjaBiofísicaFísica mèdicaAparells i instruments científicsQuímica físicaBiophysicsMedical physicsScientific apparatus and instrumentsPhysical chemistryWe present a nonequlibrium approach for the study of a flexible bilayer whose two components induce distinct curvatures. In turn, the two components are interconverted by an externally promoted reaction. Phase separation of the two species in the surface results in the growth of domains characterized by different local composition and curvature modulations. This domain growth is limited by the effective mixing due to the interconversion reaction, leading to a finite characteristic domain size. In addition to these effects, first introduced in our earlier work [ Phys. Rev. E 71 051906 (2005)], the important new feature is the assumption that the reactive process actively affects the local curvature of the bilayer. Specifically, we suggest that a force energetically activated by external sources causes a modification of the shape of the membrane at the reaction site. Our results show the appearance of a rich and robust dynamical phenomenology that includes the generation of traveling and/or oscillatory patterns. Linear stability analysis, amplitude equations, and numerical simulations of the model kinetic equations confirm the occurrence of these spatiotemporal behaviors in nonequilibrium reactive bilayers.The American Physical Society2005info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/18934Articles publicats en revistes (Ciència dels Materials i Química Física)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésReproducció del document publicat a: http://dx.doi.org/10.1103/PhysRevE.72.051921Physical Review E, 2005, vol. 72, núm.5, p. 051921-1-051921-11http://dx.doi.org/10.1103/PhysRevE.72.051921(c) American Physical Society, 2005info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/189342026-05-27T06:46:51Z
dc.title.none.fl_str_mv Generation of dynamic structures in nonequilibrium reactive membranes
title Generation of dynamic structures in nonequilibrium reactive membranes
spellingShingle Generation of dynamic structures in nonequilibrium reactive membranes
Reigada Sanz, Ramon
Biofísica
Física mèdica
Aparells i instruments científics
Química física
Biophysics
Medical physics
Scientific apparatus and instruments
Physical chemistry
title_short Generation of dynamic structures in nonequilibrium reactive membranes
title_full Generation of dynamic structures in nonequilibrium reactive membranes
title_fullStr Generation of dynamic structures in nonequilibrium reactive membranes
title_full_unstemmed Generation of dynamic structures in nonequilibrium reactive membranes
title_sort Generation of dynamic structures in nonequilibrium reactive membranes
dc.creator.none.fl_str_mv Reigada Sanz, Ramon
Buceta Fernández, Javier
Lindenberg, Katja
author Reigada Sanz, Ramon
author_facet Reigada Sanz, Ramon
Buceta Fernández, Javier
Lindenberg, Katja
author_role author
author2 Buceta Fernández, Javier
Lindenberg, Katja
author2_role author
author
dc.subject.none.fl_str_mv Biofísica
Física mèdica
Aparells i instruments científics
Química física
Biophysics
Medical physics
Scientific apparatus and instruments
Physical chemistry
topic Biofísica
Física mèdica
Aparells i instruments científics
Química física
Biophysics
Medical physics
Scientific apparatus and instruments
Physical chemistry
description We present a nonequlibrium approach for the study of a flexible bilayer whose two components induce distinct curvatures. In turn, the two components are interconverted by an externally promoted reaction. Phase separation of the two species in the surface results in the growth of domains characterized by different local composition and curvature modulations. This domain growth is limited by the effective mixing due to the interconversion reaction, leading to a finite characteristic domain size. In addition to these effects, first introduced in our earlier work [ Phys. Rev. E 71 051906 (2005)], the important new feature is the assumption that the reactive process actively affects the local curvature of the bilayer. Specifically, we suggest that a force energetically activated by external sources causes a modification of the shape of the membrane at the reaction site. Our results show the appearance of a rich and robust dynamical phenomenology that includes the generation of traveling and/or oscillatory patterns. Linear stability analysis, amplitude equations, and numerical simulations of the model kinetic equations confirm the occurrence of these spatiotemporal behaviors in nonequilibrium reactive bilayers.
publishDate 2005
dc.date.none.fl_str_mv 2005
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/2445/18934
url https://hdl.handle.net/2445/18934
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: http://dx.doi.org/10.1103/PhysRevE.72.051921
Physical Review E, 2005, vol. 72, núm.5, p. 051921-1-051921-11
http://dx.doi.org/10.1103/PhysRevE.72.051921
dc.rights.none.fl_str_mv (c) American Physical Society, 2005
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) American Physical Society, 2005
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv The American Physical Society
publisher.none.fl_str_mv The American Physical Society
dc.source.none.fl_str_mv Articles publicats en revistes (Ciència dels Materials i Química Física)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,301603

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