Fluorescence depolarization and contact angle investigation of dynamic and static interfacial tension of liquid crystal display materials
| Autor(a) principal: | |
|---|---|
| Data de Publicação: | 2003 |
| Outros Autores: | , , , , , , |
| Tipo de documento: | Artigo |
| Idioma: | eng |
| Título da fonte: | Repositório Institucional da UFBA |
| Texto Completo: | http://repositorio.ufba.br/ri/handle/ri/14231 |
Resumo: | Texto completo: acesso restrito. p. 221–226 |
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Quintella, Cristina Maria Assis Lopes Tavares da Mata HermidaLima, Angelo Marcos VieiraGonçalves, Cristiane CarlaWatanabe, Yuji NascimentoMammana, Alaide PellegriniSchreiner, Marcos A.Pepe, Iuri MunizPizzo, Ângela AQuintella, Cristina Maria Assis Lopes Tavares da Mata HermidaLima, Angelo Marcos VieiraGonçalves, Cristiane CarlaWatanabe, Yuji NascimentoMammana, Alaide PellegriniSchreiner, Marcos A.Pepe, Iuri MunizPizzo, Ângela A2013-12-18T14:28:19Z20030021-9797http://repositorio.ufba.br/ri/handle/ri/14231v. 262, n. 1Texto completo: acesso restrito. p. 221–226Interfacial interactions control two processes empirically known to be critical for molecular anchoring in twisted nematic liquid crystal displays technology (TN-LCDs): surface treatment and filling procedure. Static and dynamical interfacial tensions (ΓSL) between liquids and several substrates with similar roughness were observed respectively by contact angle (θc) of sessile drops and by fluorescence depolarization of thin liquid films flowing at high velocity. ΓSL decreased when glass was coated with tin dioxide and increased with polyvinyl alcohol (PVA) deposition. Drops were circular for all substrates except rubbed PVA, where they flowed spontaneously along the rubbing direction, reaching an oblong form that had θc parallel and perpendicular to the rubbing direction respectively greater and smaller than θc for nonrubbed PVA. This is attributed to polar group alignment generating an asymmetric ΓSL distribution with nanometric preferential direction, inducing a capillary-like flow. Polarization and anisotropy maps for high-velocity flow parallel to the PVA rubbing direction showed an increase in the net alignment of molecular domains and a widening of the region where it occurred. This is attributed to preferential anchoring in the downstream direction, instead of in several directions, as for nonrubbed PVA. This explains why filling direction is crucial for TN-LCDs homogeneous behavior.Submitted by Edileide Reis (leyde-landy@hotmail.com) on 2013-12-18T14:28:19Z No. of bitstreams: 1 Cristina M Quintella.pdf: 132092 bytes, checksum: 3fc41b07320f240670d19f3ef4fe83f3 (MD5)Made available in DSpace on 2013-12-18T14:28:19Z (GMT). No. of bitstreams: 1 Cristina M Quintella.pdf: 132092 bytes, checksum: 3fc41b07320f240670d19f3ef4fe83f3 (MD5) Previous issue date: 2003http://dx.doi.org.ez10.periodicos.capes.gov.br/10.1016/S0021-9797(03)00215-7reponame:Repositório Institucional da UFBAinstname:Universidade Federal da Bahia (UFBA)instacron:UFBAMicro fluid dynamicsIntermolecular forcesFluorescence depolarizationPLFInterfacial tensionDynamic interactionsPolyvinyl alcoholRubbed polymeLiquid crystal displays technologyLiquid flowFluorescence depolarization and contact angle investigation of dynamic and static interfacial tension of liquid crystal display materialsJournal of Colloid and Interface Scienceinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article10000-01-01info:eu-repo/semantics/openAccessengORIGINALCristina M Quintella.pdfCristina M Quintella.pdfapplication/pdf132092https://repositorio.ufba.br/bitstream/ri/14231/1/Cristina%20M%20Quintella.pdf3fc41b07320f240670d19f3ef4fe83f3MD51LICENSElicense.txtlicense.txttext/plain1345https://repositorio.ufba.br/bitstream/ri/14231/2/license.txtff6eaa8b858ea317fded99f125f5fcd0MD52TEXTCristina M Quintella.pdf.txtCristina M Quintella.pdf.txtExtracted texttext/plain24746https://repositorio.ufba.br/bitstream/ri/14231/3/Cristina%20M%20Quintella.pdf.txte7d8a159f7c633bddd3b40252ba14e46MD53ri/142312022-08-08 13:19:56.907oai:repositorio.ufba.br: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Repositório InstitucionalPUBhttp://192.188.11.11:8080/oai/requestopendoar:19322022-08-08T16:19:56Repositório Institucional da UFBA - Universidade Federal da Bahia (UFBA)false |
| dc.title.pt_BR.fl_str_mv |
Fluorescence depolarization and contact angle investigation of dynamic and static interfacial tension of liquid crystal display materials |
| dc.title.alternative.pt_BR.fl_str_mv |
Journal of Colloid and Interface Science |
| title |
Fluorescence depolarization and contact angle investigation of dynamic and static interfacial tension of liquid crystal display materials |
| spellingShingle |
Fluorescence depolarization and contact angle investigation of dynamic and static interfacial tension of liquid crystal display materials Quintella, Cristina Maria Assis Lopes Tavares da Mata Hermida Micro fluid dynamics Intermolecular forces Fluorescence depolarization PLF Interfacial tension Dynamic interactions Polyvinyl alcohol Rubbed polyme Liquid crystal displays technology Liquid flow |
| title_short |
Fluorescence depolarization and contact angle investigation of dynamic and static interfacial tension of liquid crystal display materials |
| title_full |
Fluorescence depolarization and contact angle investigation of dynamic and static interfacial tension of liquid crystal display materials |
| title_fullStr |
Fluorescence depolarization and contact angle investigation of dynamic and static interfacial tension of liquid crystal display materials |
| title_full_unstemmed |
Fluorescence depolarization and contact angle investigation of dynamic and static interfacial tension of liquid crystal display materials |
| title_sort |
Fluorescence depolarization and contact angle investigation of dynamic and static interfacial tension of liquid crystal display materials |
| author |
Quintella, Cristina Maria Assis Lopes Tavares da Mata Hermida |
| author_facet |
Quintella, Cristina Maria Assis Lopes Tavares da Mata Hermida Lima, Angelo Marcos Vieira Gonçalves, Cristiane Carla Watanabe, Yuji Nascimento Mammana, Alaide Pellegrini Schreiner, Marcos A. Pepe, Iuri Muniz Pizzo, Ângela A |
| author_role |
author |
| author2 |
Lima, Angelo Marcos Vieira Gonçalves, Cristiane Carla Watanabe, Yuji Nascimento Mammana, Alaide Pellegrini Schreiner, Marcos A. Pepe, Iuri Muniz Pizzo, Ângela A |
| author2_role |
author author author author author author author |
| dc.contributor.author.fl_str_mv |
Quintella, Cristina Maria Assis Lopes Tavares da Mata Hermida Lima, Angelo Marcos Vieira Gonçalves, Cristiane Carla Watanabe, Yuji Nascimento Mammana, Alaide Pellegrini Schreiner, Marcos A. Pepe, Iuri Muniz Pizzo, Ângela A Quintella, Cristina Maria Assis Lopes Tavares da Mata Hermida Lima, Angelo Marcos Vieira Gonçalves, Cristiane Carla Watanabe, Yuji Nascimento Mammana, Alaide Pellegrini Schreiner, Marcos A. Pepe, Iuri Muniz Pizzo, Ângela A |
| dc.subject.por.fl_str_mv |
Micro fluid dynamics Intermolecular forces Fluorescence depolarization PLF Interfacial tension Dynamic interactions Polyvinyl alcohol Rubbed polyme Liquid crystal displays technology Liquid flow |
| topic |
Micro fluid dynamics Intermolecular forces Fluorescence depolarization PLF Interfacial tension Dynamic interactions Polyvinyl alcohol Rubbed polyme Liquid crystal displays technology Liquid flow |
| description |
Texto completo: acesso restrito. p. 221–226 |
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2003 |
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2003 |
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2013-12-18T14:28:19Z |
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info:eu-repo/semantics/publishedVersion |
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info:eu-repo/semantics/article |
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http://repositorio.ufba.br/ri/handle/ri/14231 |
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0021-9797 |
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v. 262, n. 1 |
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0021-9797 v. 262, n. 1 |
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http://repositorio.ufba.br/ri/handle/ri/14231 |
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http://dx.doi.org.ez10.periodicos.capes.gov.br/10.1016/S0021-9797(03)00215-7 |
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