Monitoring of oxidation phases of copper thin films using long period fiber gratings

Detalhes bibliográficos
Autor(a) principal: Coelho, Luis
Data de Publicação: 2016
Outros Autores: Moreira, J. Agostinho, Tavares, Pedro Manuel de Melo Bandeira, Santos, José Luís, Viegas, Diana, Almeida, José Manuel Marques Martins de
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10348/11805
Resumo: Long period fiber gratings (LPFGs) were used to monitor the characteristics of copper (Cu) thin films when annealed in air atmosphere up to ∼680◦C. The wavelength and the optical power shift of the resonant bands of the LPFGs when coated with the Cu thin films, were measured as a function of the annealing temperature, and were found to exhibit a different evolution comparing to a bare LPFGs. Thin films of Cu deposited on quartz (SiO2) substrates were annealed and analyzed by XRD, SEM/EDS and Raman spectroscopy, allowing to identify the formation of two distinct oxide phases at different temperatures, cuprous (Cu2O-cuprite) and cupric (CuO-tenorite) oxides, respectively. The observed features of the resonant bands of the LPFGs were found to be associated with the Cu oxide phase transitions, indicating the possibility of using LPFGs to monitor, in real time, the oxidation states of Cu thin films by following specific characteristics of the attenuation bands. In addition, LPFGs over coated with the two distinct oxidation phases of Cu were characterized for refractive index sensing in the range between 1.300 to 1.600, leading to the conclusion that the sensitivity to the refractive index of the surrounding medium of Cu coated LPFGs sensing systems can be temperature tuned.
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spelling Monitoring of oxidation phases of copper thin films using long period fiber gratingsLong period fiber gratingsFiber optic sensorsLong period fiber gratings (LPFGs) were used to monitor the characteristics of copper (Cu) thin films when annealed in air atmosphere up to ∼680◦C. The wavelength and the optical power shift of the resonant bands of the LPFGs when coated with the Cu thin films, were measured as a function of the annealing temperature, and were found to exhibit a different evolution comparing to a bare LPFGs. Thin films of Cu deposited on quartz (SiO2) substrates were annealed and analyzed by XRD, SEM/EDS and Raman spectroscopy, allowing to identify the formation of two distinct oxide phases at different temperatures, cuprous (Cu2O-cuprite) and cupric (CuO-tenorite) oxides, respectively. The observed features of the resonant bands of the LPFGs were found to be associated with the Cu oxide phase transitions, indicating the possibility of using LPFGs to monitor, in real time, the oxidation states of Cu thin films by following specific characteristics of the attenuation bands. In addition, LPFGs over coated with the two distinct oxidation phases of Cu were characterized for refractive index sensing in the range between 1.300 to 1.600, leading to the conclusion that the sensitivity to the refractive index of the surrounding medium of Cu coated LPFGs sensing systems can be temperature tuned.Elsevier2023-10-18T13:42:37Z2016-01-01T00:00:00Z20162016-12-03T16:17:23Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfdoi.org/10.1016/j.sna.2016.11.024http://hdl.handle.net/10348/11805eng0924-4247Coelho, LuisMoreira, J. AgostinhoTavares, Pedro Manuel de Melo BandeiraSantos, José LuísViegas, DianaAlmeida, José Manuel Marques Martins deinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-02-02T12:56:33Zoai:repositorio.utad.pt:10348/11805Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T02:06:25.231910Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Monitoring of oxidation phases of copper thin films using long period fiber gratings
title Monitoring of oxidation phases of copper thin films using long period fiber gratings
spellingShingle Monitoring of oxidation phases of copper thin films using long period fiber gratings
Coelho, Luis
Long period fiber gratings
Fiber optic sensors
title_short Monitoring of oxidation phases of copper thin films using long period fiber gratings
title_full Monitoring of oxidation phases of copper thin films using long period fiber gratings
title_fullStr Monitoring of oxidation phases of copper thin films using long period fiber gratings
title_full_unstemmed Monitoring of oxidation phases of copper thin films using long period fiber gratings
title_sort Monitoring of oxidation phases of copper thin films using long period fiber gratings
author Coelho, Luis
author_facet Coelho, Luis
Moreira, J. Agostinho
Tavares, Pedro Manuel de Melo Bandeira
Santos, José Luís
Viegas, Diana
Almeida, José Manuel Marques Martins de
author_role author
author2 Moreira, J. Agostinho
Tavares, Pedro Manuel de Melo Bandeira
Santos, José Luís
Viegas, Diana
Almeida, José Manuel Marques Martins de
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Coelho, Luis
Moreira, J. Agostinho
Tavares, Pedro Manuel de Melo Bandeira
Santos, José Luís
Viegas, Diana
Almeida, José Manuel Marques Martins de
dc.subject.por.fl_str_mv Long period fiber gratings
Fiber optic sensors
topic Long period fiber gratings
Fiber optic sensors
description Long period fiber gratings (LPFGs) were used to monitor the characteristics of copper (Cu) thin films when annealed in air atmosphere up to ∼680◦C. The wavelength and the optical power shift of the resonant bands of the LPFGs when coated with the Cu thin films, were measured as a function of the annealing temperature, and were found to exhibit a different evolution comparing to a bare LPFGs. Thin films of Cu deposited on quartz (SiO2) substrates were annealed and analyzed by XRD, SEM/EDS and Raman spectroscopy, allowing to identify the formation of two distinct oxide phases at different temperatures, cuprous (Cu2O-cuprite) and cupric (CuO-tenorite) oxides, respectively. The observed features of the resonant bands of the LPFGs were found to be associated with the Cu oxide phase transitions, indicating the possibility of using LPFGs to monitor, in real time, the oxidation states of Cu thin films by following specific characteristics of the attenuation bands. In addition, LPFGs over coated with the two distinct oxidation phases of Cu were characterized for refractive index sensing in the range between 1.300 to 1.600, leading to the conclusion that the sensitivity to the refractive index of the surrounding medium of Cu coated LPFGs sensing systems can be temperature tuned.
publishDate 2016
dc.date.none.fl_str_mv 2016-01-01T00:00:00Z
2016
2016-12-03T16:17:23Z
2023-10-18T13:42:37Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv doi.org/10.1016/j.sna.2016.11.024
http://hdl.handle.net/10348/11805
identifier_str_mv doi.org/10.1016/j.sna.2016.11.024
url http://hdl.handle.net/10348/11805
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 0924-4247
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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