Nonlinear Dynamics of Lipid Films under Electric Forces

Detalhes bibliográficos
Autor(a) principal: Porto, Celia Beatriz Anteneodo de
Data de Publicação: 1997
Outros Autores: Bisch, Paulo Mascarello, Pinto, Nice Maria Americano da Costa Costa, Souza, Elias Ramos de
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://www.repositorio.ufba.br/ri/handle/ri/5276
Resumo: p. 313-326
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spelling Porto, Celia Beatriz Anteneodo deBisch, Paulo MascarelloPinto, Nice Maria Americano da Costa CostaSouza, Elias Ramos dePorto, Celia Beatriz Anteneodo deBisch, Paulo MascarelloPinto, Nice Maria Americano da Costa CostaSouza, Elias Ramos de2012-01-30T12:29:08Z2012-01-30T12:29:08Z19970021-9797http://www.repositorio.ufba.br/ri/handle/ri/5276v. 187.p. 313-326We study the dynamics and rupture of lipid films perturbed in the symmetric mode squeezing through an electrohydrodynamical approach. The lipid phase and the two surrounding aqueous phases are considered as incompressible Newtonian viscous fluids submitted to van der Waals, steric, and electric body forces. A nonlinear evolution equation for the film thickness, at the long-wavelength limit, is obtained for two symmetric cases: a film with equally charged surfaces with no potential drop and a neutral film submitted to an external electric field. At the long-wavelength limit, the electric term only influences the film evolution when the electric field inside the film is nonvanishing. We solve numerically, as an initial value problem with periodic boundary conditions, the nonlinear evolution equation. The rupture time is obtained and compared with analytical estimates. Sufficiently strong steric forces prevent the film from narrowing beyond a minimum thickness leading the film to a steady state different from the planar one consistently with the nonlinear analytical approach. The presence of a transmembrane electric potential destabilizes the perturbed film as predicted by the linear and nonlinear approaches; however, as expected, destabilization is not relevant at physiological values of the potential drop.Submitted by Ana Valéria de Jesus Moura (anavaleria_131@hotmail.com) on 2012-01-30T12:29:08Z No. of bitstreams: 1 paper10.pdf: 564001 bytes, checksum: 12c2983d9f642c3e7bc89e5416a328f3 (MD5)Made available in DSpace on 2012-01-30T12:29:08Z (GMT). No. of bitstreams: 1 paper10.pdf: 564001 bytes, checksum: 12c2983d9f642c3e7bc89e5416a328f3 (MD5) Previous issue date: 1997lipid bilayerfilm stabilitytransmembrane electric potentialNonlinear Dynamics of Lipid Films under Electric ForcesJournal of Colloid and Interface Scienceinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleengreponame:Repositório Institucional da UFBAinstname:Universidade Federal da Bahia (UFBA)instacron:UFBAinfo:eu-repo/semantics/openAccessORIGINALpaper10.pdfpaper10.pdfapplication/pdf564001https://repositorio.ufba.br/bitstream/ri/5276/1/paper10.pdf12c2983d9f642c3e7bc89e5416a328f3MD51LICENSElicense.txtlicense.txttext/plain1762https://repositorio.ufba.br/bitstream/ri/5276/2/license.txt1b89a9a0548218172d7c829f87a0eab9MD52TEXTpaper10.pdf.txtpaper10.pdf.txtExtracted texttext/plain49589https://repositorio.ufba.br/bitstream/ri/5276/3/paper10.pdf.txt472d242eb5da626cb44ae11fb11e9706MD53ri/52762022-07-05 14:03:48.372oai:repositorio.ufba.br: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Repositório InstitucionalPUBhttp://192.188.11.11:8080/oai/requestopendoar:19322022-07-05T17:03:48Repositório Institucional da UFBA - Universidade Federal da Bahia (UFBA)false
dc.title.pt_BR.fl_str_mv Nonlinear Dynamics of Lipid Films under Electric Forces
dc.title.alternative.pt_BR.fl_str_mv Journal of Colloid and Interface Science
title Nonlinear Dynamics of Lipid Films under Electric Forces
spellingShingle Nonlinear Dynamics of Lipid Films under Electric Forces
Porto, Celia Beatriz Anteneodo de
lipid bilayer
film stability
transmembrane electric potential
title_short Nonlinear Dynamics of Lipid Films under Electric Forces
title_full Nonlinear Dynamics of Lipid Films under Electric Forces
title_fullStr Nonlinear Dynamics of Lipid Films under Electric Forces
title_full_unstemmed Nonlinear Dynamics of Lipid Films under Electric Forces
title_sort Nonlinear Dynamics of Lipid Films under Electric Forces
author Porto, Celia Beatriz Anteneodo de
author_facet Porto, Celia Beatriz Anteneodo de
Bisch, Paulo Mascarello
Pinto, Nice Maria Americano da Costa Costa
Souza, Elias Ramos de
author_role author
author2 Bisch, Paulo Mascarello
Pinto, Nice Maria Americano da Costa Costa
Souza, Elias Ramos de
author2_role author
author
author
dc.contributor.author.fl_str_mv Porto, Celia Beatriz Anteneodo de
Bisch, Paulo Mascarello
Pinto, Nice Maria Americano da Costa Costa
Souza, Elias Ramos de
Porto, Celia Beatriz Anteneodo de
Bisch, Paulo Mascarello
Pinto, Nice Maria Americano da Costa Costa
Souza, Elias Ramos de
dc.subject.por.fl_str_mv lipid bilayer
film stability
transmembrane electric potential
topic lipid bilayer
film stability
transmembrane electric potential
description p. 313-326
publishDate 1997
dc.date.issued.fl_str_mv 1997
dc.date.accessioned.fl_str_mv 2012-01-30T12:29:08Z
dc.date.available.fl_str_mv 2012-01-30T12:29:08Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://www.repositorio.ufba.br/ri/handle/ri/5276
dc.identifier.issn.none.fl_str_mv 0021-9797
dc.identifier.number.pt_BR.fl_str_mv v. 187.
identifier_str_mv 0021-9797
v. 187.
url http://www.repositorio.ufba.br/ri/handle/ri/5276
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFBA
instname:Universidade Federal da Bahia (UFBA)
instacron:UFBA
instname_str Universidade Federal da Bahia (UFBA)
instacron_str UFBA
institution UFBA
reponame_str Repositório Institucional da UFBA
collection Repositório Institucional da UFBA
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