Competition between anchoring and reversible photo-induced alignment of a nematic liquid crystal

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dc.contributor.authorThieghi, L. T.
dc.contributor.authorBonvent, J. J.
dc.contributor.authorOliveira, E. A.
dc.contributor.authorGiacometti, J. A.
dc.contributor.authorBalogh, D. T.
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniv Mogi Cruzes
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:29:41Z
dc.date.available2014-05-20T15:29:41Z
dc.date.issued2003-01-01
dc.description.abstractWe investigated the alignment induced on a nematic liquid crystal (LC) by a photo-aligned polymer film with azo-dye side groups. The orientation of the LC molecules can be manipulated in a reversible manner by irradiating the film with polarized light. We analyzed the competition between the orientation induced by the main chain, through rubbing of the film and that induced by the photo-aligned polymer. Anchoring strength for the different processing conditions are reported. The changes in film morphology caused by rubbing or photo-alignment could be captured by atomic force microscopy. The reversibility of the photo-induced alignment and the competition between the two anchoring mechanisms may allow recording and erasing of information in a LC display.en
dc.description.affiliationUniv São Paulo, Inst Fis, BR-05389970 São Paulo, SP, Brazil
dc.description.affiliationUniv Mogi Cruzes, BR-08780911 Mogi Das Cruzes, SP, Brazil
dc.description.affiliationUniv Estadual Paulista, Fac Ciências & Tecnol, BR-19060900 Presidente Prudente, SP, Brazil
dc.description.affiliationUniv São Paulo, Inst Fis Sao Carlos, BR-13560970 Sao Carlos, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Fac Ciências & Tecnol, BR-19060900 Presidente Prudente, SP, Brazil
dc.format.extent911-914
dc.identifierhttp://dx.doi.org/10.1007/s00339-002-2070-8
dc.identifier.citationApplied Physics A-materials Science & Processing. New York: Springer-verlag, v. 77, n. 7, p. 911-914, 2003.
dc.identifier.doi10.1007/s00339-002-2070-8
dc.identifier.issn0947-8396
dc.identifier.urihttp://hdl.handle.net/11449/39197
dc.identifier.wosWOS:000185915100011
dc.language.isoeng
dc.publisherSpringer
dc.relation.ispartofApplied Physics A-materials Science & Processing
dc.relation.ispartofjcr1.604
dc.relation.ispartofsjr0,481
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.titleCompetition between anchoring and reversible photo-induced alignment of a nematic liquid crystalen
dc.typeArtigo
dcterms.licensehttp://www.springer.com/open+access/authors+rights?SGWID=0-176704-12-683201-0
dcterms.rightsHolderSpringer

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