Detection of chemical alterations at internal walls of microchannel flow cells by nondestructive fluorescence depolarization
| Autor(a) principal: | |
|---|---|
| Data de Publicação: | 2004 |
| Outros Autores: | , , , , |
| Tipo de documento: | Artigo |
| Idioma: | eng |
| Título da fonte: | Repositório Institucional da UFBA |
| Texto Completo: | http://www.repositorio.ufba.br/ri/handle/ri/5238 |
Resumo: | p. 201–205 |
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Quintella, Cristina Maria Assis Lopes Tavares da Mata HermidaLima, Angelo Marcos VieiraMammana, Alaide PellegriniPepe, Iuri MunizWatanabe, Yuji NascimentoSchreiner, Marcos A.Quintella, Cristina Maria Assis Lopes Tavares da Mata HermidaLima, Angelo Marcos VieiraMammana, Alaide PellegriniPepe, Iuri MunizWatanabe, Yuji NascimentoSchreiner, Marcos A.2012-01-24T12:18:33Z2012-01-24T12:18:33Z20040021-9797http://www.repositorio.ufba.br/ri/handle/ri/5238v. 271p. 201–205A recent trend is the production of workable microchannel flow cells (MF cells). The nondestructive methods used to assess their reliability are based mainly on output monitoring and do not evaluate internal chemical interactions. We investigate a nondestructive method for evaluating changes in the chemical composition of the inner walls based on evaluation of the extent of alignment of a fluorescent probe in a liquid flowing within MF cells. Two MF cells were built with a 10-μm inner spacing. Their inner walls had four parallel SnO2 strips, 2.00 mm wide, separated by 0.50-mm-wide glass strips. One cell had strips parallel to the flow and the other perpendicular. Flow-induced intermolecular alignment of rhodamine B in monoethylene glycol was scanned with 28-μm precision by fluorescence depolarization, using polarized-laser-induced fluorescence within induced flows (PLF-FI).No changes of polarization were seen when the flow was stopped. Under flowing conditions, polarization was always 4% lower in the glass region as compared to SnO2. Glass had a higher solid–liquid interfacial tension (determined by contact angle measurements), thus being more wettable and increasing the drag, which propagates into the liquid flow, decreasing polarization. PLF-FI can thus identify regions with different chemical constitutions.Submitted by Ana Valéria de Jesus Moura (anavaleria_131@hotmail.com) on 2012-01-24T12:18:33Z No. of bitstreams: 1 S0021979703009251-main.pdf: 299759 bytes, checksum: c66ed76d14a5df4bad3cbac2fa29a09b (MD5)Made available in DSpace on 2012-01-24T12:18:33Z (GMT). No. of bitstreams: 1 S0021979703009251-main.pdf: 299759 bytes, checksum: c66ed76d14a5df4bad3cbac2fa29a09b (MD5) Previous issue date: 2004Fluid microdynamicsPLF-FIInterfacial tensionWettingAdhesionDragDynamic interactionsLiquid flowDetection of chemical alterations at internal walls of microchannel flow cells by nondestructive fluorescence depolarizationJournal 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/openAccessORIGINALS0021979703009251-main.pdfS0021979703009251-main.pdfapplication/pdf299759https://repositorio.ufba.br/bitstream/ri/5238/1/S0021979703009251-main.pdfc66ed76d14a5df4bad3cbac2fa29a09bMD51LICENSElicense.txtlicense.txttext/plain1762https://repositorio.ufba.br/bitstream/ri/5238/2/license.txt1b89a9a0548218172d7c829f87a0eab9MD52TEXTS0021979703009251-main.pdf.txtS0021979703009251-main.pdf.txtExtracted texttext/plain22104https://repositorio.ufba.br/bitstream/ri/5238/3/S0021979703009251-main.pdf.txtda9d0aacba1986d2d462d95f9a0630d5MD53ri/52382022-07-05 14:03:43.304oai:repositorio.ufba.br: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Repositório InstitucionalPUBhttp://192.188.11.11:8080/oai/requestopendoar:19322022-07-05T17:03:43Repositório Institucional da UFBA - Universidade Federal da Bahia (UFBA)false |
| dc.title.pt_BR.fl_str_mv |
Detection of chemical alterations at internal walls of microchannel flow cells by nondestructive fluorescence depolarization |
| dc.title.alternative.pt_BR.fl_str_mv |
Journal of Colloid and Interface Science |
| title |
Detection of chemical alterations at internal walls of microchannel flow cells by nondestructive fluorescence depolarization |
| spellingShingle |
Detection of chemical alterations at internal walls of microchannel flow cells by nondestructive fluorescence depolarization Quintella, Cristina Maria Assis Lopes Tavares da Mata Hermida Fluid microdynamics PLF-FI Interfacial tension Wetting Adhesion Drag Dynamic interactions Liquid flow |
| title_short |
Detection of chemical alterations at internal walls of microchannel flow cells by nondestructive fluorescence depolarization |
| title_full |
Detection of chemical alterations at internal walls of microchannel flow cells by nondestructive fluorescence depolarization |
| title_fullStr |
Detection of chemical alterations at internal walls of microchannel flow cells by nondestructive fluorescence depolarization |
| title_full_unstemmed |
Detection of chemical alterations at internal walls of microchannel flow cells by nondestructive fluorescence depolarization |
| title_sort |
Detection of chemical alterations at internal walls of microchannel flow cells by nondestructive fluorescence depolarization |
| 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 Mammana, Alaide Pellegrini Pepe, Iuri Muniz Watanabe, Yuji Nascimento Schreiner, Marcos A. |
| author_role |
author |
| author2 |
Lima, Angelo Marcos Vieira Mammana, Alaide Pellegrini Pepe, Iuri Muniz Watanabe, Yuji Nascimento Schreiner, Marcos A. |
| author2_role |
author author author author author |
| dc.contributor.author.fl_str_mv |
Quintella, Cristina Maria Assis Lopes Tavares da Mata Hermida Lima, Angelo Marcos Vieira Mammana, Alaide Pellegrini Pepe, Iuri Muniz Watanabe, Yuji Nascimento Schreiner, Marcos A. Quintella, Cristina Maria Assis Lopes Tavares da Mata Hermida Lima, Angelo Marcos Vieira Mammana, Alaide Pellegrini Pepe, Iuri Muniz Watanabe, Yuji Nascimento Schreiner, Marcos A. |
| dc.subject.por.fl_str_mv |
Fluid microdynamics PLF-FI Interfacial tension Wetting Adhesion Drag Dynamic interactions Liquid flow |
| topic |
Fluid microdynamics PLF-FI Interfacial tension Wetting Adhesion Drag Dynamic interactions Liquid flow |
| description |
p. 201–205 |
| publishDate |
2004 |
| dc.date.issued.fl_str_mv |
2004 |
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2012-01-24T12:18:33Z |
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2012-01-24T12:18:33Z |
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info:eu-repo/semantics/publishedVersion |
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info:eu-repo/semantics/article |
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article |
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http://www.repositorio.ufba.br/ri/handle/ri/5238 |
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0021-9797 |
| dc.identifier.number.pt_BR.fl_str_mv |
v. 271 |
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0021-9797 v. 271 |
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http://www.repositorio.ufba.br/ri/handle/ri/5238 |
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eng |
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