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dc.contributor.authorPapaleo, Ricardo Meurerpt_BR
dc.contributor.authorOliveira, Luciano Denardin dept_BR
dc.contributor.authorFarenzena, Lucio Sartoript_BR
dc.contributor.authorAraujo, Marco Aurelio dept_BR
dc.contributor.authorLivi, Rogerio Pohlmannpt_BR
dc.date.accessioned2014-09-26T02:10:55Zpt_BR
dc.date.issued2000pt_BR
dc.identifier.issn1098-0121pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/103859pt_BR
dc.description.abstractFeatures produced by swift heavy ions on polymer thin films at different temperatures are used to identify the transition between vitreous and viscoelastic behaviors (the glass transition temperature) and to probe the relaxation of nanodeformations in the material. Scanning force microscopy images reveal nanometer-sized craters and raised regions around the point of ion impact. The size of such defects is independent of temperature for –196°C<T<80°C, but above a critical temperature crater dimensions increase steeply and no plastic deformation is observed. This critical temperature is sensitive to the cooling rate, and for rapidly cooled targets it is close to the glass transition temperature of the polymer.en
dc.format.mimetypeapplication/pdf
dc.language.isoengpt_BR
dc.relation.ispartofPhysical review. B, Condensed matter and materials physics. Melville. Vol. 62, no. 17 (Nov. 2000), p. 11273-11276pt_BR
dc.rightsOpen Accessen
dc.subjectFísicapt_BR
dc.subjectPolímeros : Propriedades físico-químicaspt_BR
dc.subjectBombardeamento de ionspt_BR
dc.subjectMicroscopia de força atômicapt_BR
dc.subjectDeformaçãopt_BR
dc.subjectTransicao vitreapt_BR
dc.subjectImpacto ion-superfíciept_BR
dc.subjectMateriais nanoestruturadospt_BR
dc.subjectRelaxação de tensãopt_BR
dc.subjectTratamento termomagneticopt_BR
dc.titleProbing thermomechanical behavior of polymers at the nanometer scale with single-ion bombardment and scanning force microscopypt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000279551pt_BR
dc.type.originEstrangeiropt_BR


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