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dc.contributor.CRUESPUNIVERSIDADE DE ESTADUAL DE CAMPINASpt_BR
dc.typeArtigo de periódicopt_BR
dc.titleMolecular Arrangements Of Self-assembled Surfactant Films: Characterization From Atomic Force Microscopy Data.pt_BR
dc.contributor.authorTeschke, Opt_BR
dc.contributor.authorde Souza, E Fpt_BR
unicamp.authorO Teschke, Nano-Structure Laboratory, IFGW/UNICAMP, 13081-970 Campinas, SP, Brazil. oteschke@ifi.unicamp.brpt_BR
unicamp.author.externalE F de Souza,pt
dc.description.abstractThe adsorbed surfactant film molecular arrangement with thickness of approximately 5 nm is determined by measurements of the film dielectric permittivity. Before the advent of atomic force microscopy the dielectric permittivity was a macroscopic parameter, appropriate only for describing uniform environments since its profile was difficult to measure for local intermolecular interactions and its spatial distribution was frequently settled without experimental justification. Here, we show that atomic force microscopy made it possible to measure the dielectric permittivity profile in a scale below 5 nm for adsorbed layers of self-assembled surfactant films in water. The measured values of the film's dielectric permittivity and the film's thickness determine the compactness of the adsorbed film and consequently the presence of water molecules in the film and the conformal structure of the adsorbed molecules.en
dc.relation.ispartofPhysical Review. E, Statistical, Nonlinear, And Soft Matter Physicspt_BR
dc.relation.ispartofabbreviationPhys Rev E Stat Nonlin Soft Matter Physpt_BR
dc.date.issued2003-Seppt_BR
dc.identifier.citationPhysical Review. E, Statistical, Nonlinear, And Soft Matter Physics. v. 68, n. 3 Pt 1, p. 031401, 2003-Sep.pt_BR
dc.language.isoengpt_BR
dc.description.volume68pt_BR
dc.description.firstpage031401pt_BR
dc.rightsabertopt_BR
dc.rights.holderpt_BR
dc.sourcePubMedpt_BR
dc.identifier.issn1539-3755pt_BR
dc.identifier.doipt_BR
dc.identifier.urlhttp://www.ncbi.nlm.nih.gov/pubmed/14524763pt_BR
dc.date.available2015-11-27T12:52:28Z-
dc.date.accessioned2015-11-27T12:52:28Z-
dc.description.provenanceMade available in DSpace on 2015-11-27T12:52:28Z (GMT). No. of bitstreams: 1 pmed_14524763.pdf: 541813 bytes, checksum: fe49a6dcaa49fa6bd08b238efdbaaee8 (MD5) Previous issue date: 2003en
dc.identifier.urihttp://repositorio.unicamp.br/jspui/handle/REPOSIP/195548-
dc.identifier.idPubmed14524763pt_BR
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