Laser-like emission from dye-doped nanostructured synthetic opals
Autor(a) principal: | |
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Data de Publicação: | 2003 |
Outros Autores: | , , , |
Tipo de documento: | Artigo de conferência |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1109/EQEC.2003.1314289 http://hdl.handle.net/11449/220494 |
Resumo: | 3-D silica based inverse opal sample were prepared using close packed crystals of latex spheres as templates for silica polymerization. The samples were characterized by electron microscopy which reveals a fcc crystalline structure presenting pores with diameter of 210 nm and walls with 70 nm of thickness. The samples were infiltrated with Rhodamine 6G by soaking them in an ethanolic solution during 2 min and leaving it to dry at ambient for 2 hours. The second harmonic of a Nd:YAG laser at 532 nm (6 ns, 5 Hz) was used to excite the samples. The laser beam was focused on a region of 3 × 10-5 cm2 forming an angle of incidence of 49° with respect to, the normal of the crystal surface. The opal structure presents no absorption in the visible range but, due to the presence of dye molecules, the laser light is absorbed. The incident laser intensity was varied and the dye fluorescence was collected throughout a monochromator to monitor its characteristics. |
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Repositório Institucional da UNESP |
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spelling |
Laser-like emission from dye-doped nanostructured synthetic opals3-D silica based inverse opal sample were prepared using close packed crystals of latex spheres as templates for silica polymerization. The samples were characterized by electron microscopy which reveals a fcc crystalline structure presenting pores with diameter of 210 nm and walls with 70 nm of thickness. The samples were infiltrated with Rhodamine 6G by soaking them in an ethanolic solution during 2 min and leaving it to dry at ambient for 2 hours. The second harmonic of a Nd:YAG laser at 532 nm (6 ns, 5 Hz) was used to excite the samples. The laser beam was focused on a region of 3 × 10-5 cm2 forming an angle of incidence of 49° with respect to, the normal of the crystal surface. The opal structure presents no absorption in the visible range but, due to the presence of dye molecules, the laser light is absorbed. The incident laser intensity was varied and the dye fluorescence was collected throughout a monochromator to monitor its characteristics.Departamento de Física Universidade Federal de PernambucoInstituto de Química Universidade do Estado de São PauloUniversidade Federal de Pernambuco (UFPE)Universidade do Estado de São PauloDe Araújo, Cid B.Alencar, Marcio A. R. C.Maciel, Glauco S.Bertholdo, RobertoMessaddeq, Younes2022-04-28T19:01:44Z2022-04-28T19:01:44Z2003-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObject431http://dx.doi.org/10.1109/EQEC.2003.13142892003 European Quantum Electronics Conference, EQEC 2003, p. 431-.http://hdl.handle.net/11449/22049410.1109/EQEC.2003.13142892-s2.0-84947203540Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPeng2003 European Quantum Electronics Conference, EQEC 2003info:eu-repo/semantics/openAccess2022-04-28T19:01:44Zoai:repositorio.unesp.br:11449/220494Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T14:59:11.459319Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Laser-like emission from dye-doped nanostructured synthetic opals |
title |
Laser-like emission from dye-doped nanostructured synthetic opals |
spellingShingle |
Laser-like emission from dye-doped nanostructured synthetic opals De Araújo, Cid B. |
title_short |
Laser-like emission from dye-doped nanostructured synthetic opals |
title_full |
Laser-like emission from dye-doped nanostructured synthetic opals |
title_fullStr |
Laser-like emission from dye-doped nanostructured synthetic opals |
title_full_unstemmed |
Laser-like emission from dye-doped nanostructured synthetic opals |
title_sort |
Laser-like emission from dye-doped nanostructured synthetic opals |
author |
De Araújo, Cid B. |
author_facet |
De Araújo, Cid B. Alencar, Marcio A. R. C. Maciel, Glauco S. Bertholdo, Roberto Messaddeq, Younes |
author_role |
author |
author2 |
Alencar, Marcio A. R. C. Maciel, Glauco S. Bertholdo, Roberto Messaddeq, Younes |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Federal de Pernambuco (UFPE) Universidade do Estado de São Paulo |
dc.contributor.author.fl_str_mv |
De Araújo, Cid B. Alencar, Marcio A. R. C. Maciel, Glauco S. Bertholdo, Roberto Messaddeq, Younes |
description |
3-D silica based inverse opal sample were prepared using close packed crystals of latex spheres as templates for silica polymerization. The samples were characterized by electron microscopy which reveals a fcc crystalline structure presenting pores with diameter of 210 nm and walls with 70 nm of thickness. The samples were infiltrated with Rhodamine 6G by soaking them in an ethanolic solution during 2 min and leaving it to dry at ambient for 2 hours. The second harmonic of a Nd:YAG laser at 532 nm (6 ns, 5 Hz) was used to excite the samples. The laser beam was focused on a region of 3 × 10-5 cm2 forming an angle of incidence of 49° with respect to, the normal of the crystal surface. The opal structure presents no absorption in the visible range but, due to the presence of dye molecules, the laser light is absorbed. The incident laser intensity was varied and the dye fluorescence was collected throughout a monochromator to monitor its characteristics. |
publishDate |
2003 |
dc.date.none.fl_str_mv |
2003-01-01 2022-04-28T19:01:44Z 2022-04-28T19:01:44Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/conferenceObject |
format |
conferenceObject |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1109/EQEC.2003.1314289 2003 European Quantum Electronics Conference, EQEC 2003, p. 431-. http://hdl.handle.net/11449/220494 10.1109/EQEC.2003.1314289 2-s2.0-84947203540 |
url |
http://dx.doi.org/10.1109/EQEC.2003.1314289 http://hdl.handle.net/11449/220494 |
identifier_str_mv |
2003 European Quantum Electronics Conference, EQEC 2003, p. 431-. 10.1109/EQEC.2003.1314289 2-s2.0-84947203540 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
2003 European Quantum Electronics Conference, EQEC 2003 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
431 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128444151627776 |