Confined brownian ratchets

Vista senzilla d'ítem
dc.contributor.authorMalgaretti, Paolo
dc.contributor.authorPagonabarraga Mora, Ignacio
dc.contributor.authorRubí Capaceti, José Miguel
dc.date.accessioned2014-01-21T12:01:59Z
dc.date.available2014-01-21T12:01:59Z
dc.date.issued2013
dc.date.updated2014-01-21T12:01:59Z
dc.description.abstractWe analyze the dynamics of Brownian ratchets in a confined environment. The motion of the particles is described by a Fick-Jakobs kinetic equation in which the presence of boundaries is modeled by means of an entropic potential. The cases of a flashing ratchet, a two-state model, and a ratchet under the influence of a temperature gradient are analyzed in detail. We show the emergence of a strong cooperativity between the inherent rectification of the ratchet mechanism and the entropic bias of the fluctuations caused by spatial confinement. Net particle transport may take place in situations where none of those mechanisms leads to rectification when acting individually. The combined rectification mechanisms may lead to bidirectional transport and to new routes to segregation phenomena. Confined Brownian ratchets could be used to control transport in mesostructures and to engineer new and more efficient devices for transport at the nanoscale.
dc.format.extent10 p.
dc.format.mimetypeapplication/pdf
dc.identifier.idgrec631705
dc.identifier.issn0021-9606
dc.identifier.pmid23697440
dc.identifier.urihttps://hdl.handle.net/2445/49063
dc.language.isoeng
dc.publisherAmerican Institute of Physics
dc.relation.isformatofReproducció del document publicat a: http://dx.doi.org/10.1063/1.4804632
dc.relation.ispartofJournal of Chemical Physics, 2013, vol. 138, p. 194906-1-194906-9
dc.relation.urihttp://dx.doi.org/10.1063/1.4804632
dc.rights(c) American Institute of Physics , 2013
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.sourceArticles publicats en revistes (Física de la Matèria Condensada)
dc.subject.classificationQuímica física
dc.subject.classificationBiofísica
dc.subject.classificationNanotecnologia
dc.subject.classificationTermodinàmica
dc.subject.classificationFísica estadística
dc.subject.classificationEntropia
dc.subject.classificationDinàmica d'una partícula
dc.subject.classificationBiotecnologia
dc.subject.classificationDifusió
dc.subject.otherPhysical and theoretical chemistry
dc.subject.otherBiophysics
dc.subject.otherNanotechnology
dc.subject.otherThermodynamics
dc.subject.otherStatistical physics
dc.subject.otherEntropy
dc.subject.otherDynamics of a particle
dc.subject.otherBiotechnology
dc.subject.otherDiffusion
dc.titleConfined brownian ratchets
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion

Fitxers

Paquet original

Mostrant 1 - 1 de 1
Miniatura
Nom:
631705.pdf
Mida:
833.06 KB
Format:
Adobe Portable Document Format
Descarregar

Col·leccions

Articles publicats en revistes (Física de la Matèria Condensada)