Hydrodynamic and electrokinetic effects on the dynamics of charged colloids and macromolecules

Autores
Banchio, Adolfo Javier; McPhie, Mathieu G.; Nägele, Gerhard
Año de publicación
2008
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We explore dynamic processes in suspensions of charge-stabilized colloidal particles and biological macromolecules. Various short-time transport properties including diffusion functions and the high-frequency viscosity, have been calculated by means of a recently developed accelerated Stokesian dynamics simulation tool. This has allowed us to study dense suspensions with many-body hydrodynamic interactions. The results of this study are used to explore the validity of generalized Stokes–Einstein relations, and the possibility of measuring self-diffusion at a finite scattering wavenumber. The influence of the electrolyte ion dynamics on the colloidal long-time self-diffusion in non-dilute suspensions of small colloids is determined using a many-component mode-coupling theory that accounts for the inter-ionic hydrodynamic interactions. We investigate the influence of the asymmetry in the electrolyte ion charges and mobilities on the friction experienced by the charged colloids. It is shown that these asymmetries affect the electrolyte friction significantly, and that the electrolyte friction contribution to self-diffusion decreases with increasing colloid concentration.
Fil: Banchio, Adolfo Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina
Fil: McPhie, Mathieu G.. Institut f¨ur Festk¨orperforschung; Alemania
Fil: Nägele, Gerhard. Institut f¨ur Festk¨orperforschung; Alemania
Materia
charged colloids
hydrodynamic interactions
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/279503
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Hydrodynamic and electrokinetic effects on the dynamics of charged colloids and macromoleculesBanchio, Adolfo JavierMcPhie, Mathieu G.Nägele, Gerhardcharged colloidshydrodynamic interactionshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We explore dynamic processes in suspensions of charge-stabilized colloidal particles and biological macromolecules. Various short-time transport properties including diffusion functions and the high-frequency viscosity, have been calculated by means of a recently developed accelerated Stokesian dynamics simulation tool. This has allowed us to study dense suspensions with many-body hydrodynamic interactions. The results of this study are used to explore the validity of generalized Stokes–Einstein relations, and the possibility of measuring self-diffusion at a finite scattering wavenumber. The influence of the electrolyte ion dynamics on the colloidal long-time self-diffusion in non-dilute suspensions of small colloids is determined using a many-component mode-coupling theory that accounts for the inter-ionic hydrodynamic interactions. We investigate the influence of the asymmetry in the electrolyte ion charges and mobilities on the friction experienced by the charged colloids. It is shown that these asymmetries affect the electrolyte friction significantly, and that the electrolyte friction contribution to self-diffusion decreases with increasing colloid concentration.Fil: Banchio, Adolfo Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; ArgentinaFil: McPhie, Mathieu G.. Institut f¨ur Festk¨orperforschung; AlemaniaFil: Nägele, Gerhard. Institut f¨ur Festk¨orperforschung; AlemaniaIOP Publishing2008-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/279503Banchio, Adolfo Javier; McPhie, Mathieu G.; Nägele, Gerhard; Hydrodynamic and electrokinetic effects on the dynamics of charged colloids and macromolecules; IOP Publishing; Journal of Physics: Condensed Matter; 20; 9-2008; 404213-4042130953-8984CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.1088/0953-8984/20/40/404213info:eu-repo/semantics/altIdentifier/doi/10.1088/0953-8984/20/40/404213info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2026-02-06T13:03:15Zoai:ri.conicet.gov.ar:11336/279503instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982026-02-06 13:03:15.814CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Hydrodynamic and electrokinetic effects on the dynamics of charged colloids and macromolecules
title Hydrodynamic and electrokinetic effects on the dynamics of charged colloids and macromolecules
spellingShingle Hydrodynamic and electrokinetic effects on the dynamics of charged colloids and macromolecules
Banchio, Adolfo Javier
charged colloids
hydrodynamic interactions
title_short Hydrodynamic and electrokinetic effects on the dynamics of charged colloids and macromolecules
title_full Hydrodynamic and electrokinetic effects on the dynamics of charged colloids and macromolecules
title_fullStr Hydrodynamic and electrokinetic effects on the dynamics of charged colloids and macromolecules
title_full_unstemmed Hydrodynamic and electrokinetic effects on the dynamics of charged colloids and macromolecules
title_sort Hydrodynamic and electrokinetic effects on the dynamics of charged colloids and macromolecules
dc.creator.none.fl_str_mv Banchio, Adolfo Javier
McPhie, Mathieu G.
Nägele, Gerhard
author Banchio, Adolfo Javier
author_facet Banchio, Adolfo Javier
McPhie, Mathieu G.
Nägele, Gerhard
author_role author
author2 McPhie, Mathieu G.
Nägele, Gerhard
author2_role author
author
dc.subject.none.fl_str_mv charged colloids
hydrodynamic interactions
topic charged colloids
hydrodynamic interactions
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We explore dynamic processes in suspensions of charge-stabilized colloidal particles and biological macromolecules. Various short-time transport properties including diffusion functions and the high-frequency viscosity, have been calculated by means of a recently developed accelerated Stokesian dynamics simulation tool. This has allowed us to study dense suspensions with many-body hydrodynamic interactions. The results of this study are used to explore the validity of generalized Stokes–Einstein relations, and the possibility of measuring self-diffusion at a finite scattering wavenumber. The influence of the electrolyte ion dynamics on the colloidal long-time self-diffusion in non-dilute suspensions of small colloids is determined using a many-component mode-coupling theory that accounts for the inter-ionic hydrodynamic interactions. We investigate the influence of the asymmetry in the electrolyte ion charges and mobilities on the friction experienced by the charged colloids. It is shown that these asymmetries affect the electrolyte friction significantly, and that the electrolyte friction contribution to self-diffusion decreases with increasing colloid concentration.
Fil: Banchio, Adolfo Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina
Fil: McPhie, Mathieu G.. Institut f¨ur Festk¨orperforschung; Alemania
Fil: Nägele, Gerhard. Institut f¨ur Festk¨orperforschung; Alemania
description We explore dynamic processes in suspensions of charge-stabilized colloidal particles and biological macromolecules. Various short-time transport properties including diffusion functions and the high-frequency viscosity, have been calculated by means of a recently developed accelerated Stokesian dynamics simulation tool. This has allowed us to study dense suspensions with many-body hydrodynamic interactions. The results of this study are used to explore the validity of generalized Stokes–Einstein relations, and the possibility of measuring self-diffusion at a finite scattering wavenumber. The influence of the electrolyte ion dynamics on the colloidal long-time self-diffusion in non-dilute suspensions of small colloids is determined using a many-component mode-coupling theory that accounts for the inter-ionic hydrodynamic interactions. We investigate the influence of the asymmetry in the electrolyte ion charges and mobilities on the friction experienced by the charged colloids. It is shown that these asymmetries affect the electrolyte friction significantly, and that the electrolyte friction contribution to self-diffusion decreases with increasing colloid concentration.
publishDate 2008
dc.date.none.fl_str_mv 2008-09
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/279503
Banchio, Adolfo Javier; McPhie, Mathieu G.; Nägele, Gerhard; Hydrodynamic and electrokinetic effects on the dynamics of charged colloids and macromolecules; IOP Publishing; Journal of Physics: Condensed Matter; 20; 9-2008; 404213-404213
0953-8984
CONICET Digital
CONICET
url http://hdl.handle.net/11336/279503
identifier_str_mv Banchio, Adolfo Javier; McPhie, Mathieu G.; Nägele, Gerhard; Hydrodynamic and electrokinetic effects on the dynamics of charged colloids and macromolecules; IOP Publishing; Journal of Physics: Condensed Matter; 20; 9-2008; 404213-404213
0953-8984
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.1088/0953-8984/20/40/404213
info:eu-repo/semantics/altIdentifier/doi/10.1088/0953-8984/20/40/404213
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv IOP Publishing
publisher.none.fl_str_mv IOP Publishing
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.106097

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