Optimization of Au:CuO thin films by plasma surface modification for high-resolution LSPR gas sensing at room temperature
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | https://hdl.handle.net/1822/79909 |
Resumo: | In this study, thin films composed of gold nanoparticles embedded in a copper oxide matrix (Au:CuO), manifesting Localized Surface Plasmon Resonance (LSPR) behavior, were produced by reactive DC magnetron sputtering and post-deposition in-air annealing. The effect of low-power Ar plasma etching on the surface properties of the plasmonic thin films was studied, envisaging its optimization as gas sensors. Thus, this work pretends to attain the maximum sensing response of the thin film system and to demonstrate its potential as a gas sensor. The results show that as Ar plasma treatment time increases, the host CuO matrix is etched while Au nanoparticles are uncovered, which leads to an enhancement of the sensitivity until a certain limit. Above such a time limit for plasma treatment, the CuO bonds are broken, and oxygen is removed from the film’s surface, resulting in a decrease in the gas sensing capabilities. Hence, the importance of the host matrix for the design of the LSPR sensor is also demonstrated. CuO not only provides stability and protection to the Au NPs but also promotes interactions between the thin film’s surface and the tested gases, thereby improving the nanocomposite film’s sensitivity. The optimized sensor sensitivity was estimated at 849 nm/RIU, which demonstrates that the Au-CuO thin films have the potential to be used as an LSPR platform for gas sensors. |
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Optimization of Au:CuO thin films by plasma surface modification for high-resolution LSPR gas sensing at room temperatureplasmonicsthin filmsAu nanoparticlesnanostructural evolutionhigh-resolution LSPR spectroscopyoptical gas sensingCiências Naturais::Ciências FísicasScience & TechnologyIn this study, thin films composed of gold nanoparticles embedded in a copper oxide matrix (Au:CuO), manifesting Localized Surface Plasmon Resonance (LSPR) behavior, were produced by reactive DC magnetron sputtering and post-deposition in-air annealing. The effect of low-power Ar plasma etching on the surface properties of the plasmonic thin films was studied, envisaging its optimization as gas sensors. Thus, this work pretends to attain the maximum sensing response of the thin film system and to demonstrate its potential as a gas sensor. The results show that as Ar plasma treatment time increases, the host CuO matrix is etched while Au nanoparticles are uncovered, which leads to an enhancement of the sensitivity until a certain limit. Above such a time limit for plasma treatment, the CuO bonds are broken, and oxygen is removed from the film’s surface, resulting in a decrease in the gas sensing capabilities. Hence, the importance of the host matrix for the design of the LSPR sensor is also demonstrated. CuO not only provides stability and protection to the Au NPs but also promotes interactions between the thin film’s surface and the tested gases, thereby improving the nanocomposite film’s sensitivity. The optimized sensor sensitivity was estimated at 849 nm/RIU, which demonstrates that the Au-CuO thin films have the potential to be used as an LSPR platform for gas sensors.This research was sponsored by the Portuguese Foundation for Science and Technology (FCT) in the framework of the Strategic Funding UIDB/04650/2020 and by the project CO2Plasmon with reference EXPL/CTM-REF/0750/2021. M.P. acknowledges her Ph.D. Scholarship from FCT, with reference SFRH/BD/137076/2018. Diana I. Meira acknowledges her Ph.D. Scholarship from FCT, with reference SFRH/BD/143262/2019.Multidisciplinary Digital Publishing InstituteUniversidade do MinhoProença, ManuelaRodrigues, Marco S.Meira, Diana I.Castro, M. Cidalia R.Rodrigues, Pedro V.Machado, A. V.Alves, EduardoBarradas, Nuno P.Borges, JoelVaz, F.2022-09-172022-09-17T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/1822/79909engProença, M.; Rodrigues, M.S.; Meira, D.I.; Castro, M.C.R.; Rodrigues, P.V.; Machado, A.V.; Alves, E.; Barradas, N.P.; Borges, J.; Vaz, F. Optimization of Au:CuO Thin Films by Plasma Surface Modification for High-Resolution LSPR Gas Sensing at Room Temperature. Sensors 2022, 22, 7043. https://doi.org/10.3390/s221870431424-82201424-822010.3390/s2218704336146392https://www.mdpi.com/1424-8220/22/18/7043info: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:RCAAP2023-12-30T01:25:03Zoai:repositorium.sdum.uminho.pt:1822/79909Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:16:58.169558Repositório 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 |
Optimization of Au:CuO thin films by plasma surface modification for high-resolution LSPR gas sensing at room temperature |
title |
Optimization of Au:CuO thin films by plasma surface modification for high-resolution LSPR gas sensing at room temperature |
spellingShingle |
Optimization of Au:CuO thin films by plasma surface modification for high-resolution LSPR gas sensing at room temperature Proença, Manuela plasmonics thin films Au nanoparticles nanostructural evolution high-resolution LSPR spectroscopy optical gas sensing Ciências Naturais::Ciências Físicas Science & Technology |
title_short |
Optimization of Au:CuO thin films by plasma surface modification for high-resolution LSPR gas sensing at room temperature |
title_full |
Optimization of Au:CuO thin films by plasma surface modification for high-resolution LSPR gas sensing at room temperature |
title_fullStr |
Optimization of Au:CuO thin films by plasma surface modification for high-resolution LSPR gas sensing at room temperature |
title_full_unstemmed |
Optimization of Au:CuO thin films by plasma surface modification for high-resolution LSPR gas sensing at room temperature |
title_sort |
Optimization of Au:CuO thin films by plasma surface modification for high-resolution LSPR gas sensing at room temperature |
author |
Proença, Manuela |
author_facet |
Proença, Manuela Rodrigues, Marco S. Meira, Diana I. Castro, M. Cidalia R. Rodrigues, Pedro V. Machado, A. V. Alves, Eduardo Barradas, Nuno P. Borges, Joel Vaz, F. |
author_role |
author |
author2 |
Rodrigues, Marco S. Meira, Diana I. Castro, M. Cidalia R. Rodrigues, Pedro V. Machado, A. V. Alves, Eduardo Barradas, Nuno P. Borges, Joel Vaz, F. |
author2_role |
author author author author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Proença, Manuela Rodrigues, Marco S. Meira, Diana I. Castro, M. Cidalia R. Rodrigues, Pedro V. Machado, A. V. Alves, Eduardo Barradas, Nuno P. Borges, Joel Vaz, F. |
dc.subject.por.fl_str_mv |
plasmonics thin films Au nanoparticles nanostructural evolution high-resolution LSPR spectroscopy optical gas sensing Ciências Naturais::Ciências Físicas Science & Technology |
topic |
plasmonics thin films Au nanoparticles nanostructural evolution high-resolution LSPR spectroscopy optical gas sensing Ciências Naturais::Ciências Físicas Science & Technology |
description |
In this study, thin films composed of gold nanoparticles embedded in a copper oxide matrix (Au:CuO), manifesting Localized Surface Plasmon Resonance (LSPR) behavior, were produced by reactive DC magnetron sputtering and post-deposition in-air annealing. The effect of low-power Ar plasma etching on the surface properties of the plasmonic thin films was studied, envisaging its optimization as gas sensors. Thus, this work pretends to attain the maximum sensing response of the thin film system and to demonstrate its potential as a gas sensor. The results show that as Ar plasma treatment time increases, the host CuO matrix is etched while Au nanoparticles are uncovered, which leads to an enhancement of the sensitivity until a certain limit. Above such a time limit for plasma treatment, the CuO bonds are broken, and oxygen is removed from the film’s surface, resulting in a decrease in the gas sensing capabilities. Hence, the importance of the host matrix for the design of the LSPR sensor is also demonstrated. CuO not only provides stability and protection to the Au NPs but also promotes interactions between the thin film’s surface and the tested gases, thereby improving the nanocomposite film’s sensitivity. The optimized sensor sensitivity was estimated at 849 nm/RIU, which demonstrates that the Au-CuO thin films have the potential to be used as an LSPR platform for gas sensors. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-09-17 2022-09-17T00:00:00Z |
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 |
https://hdl.handle.net/1822/79909 |
url |
https://hdl.handle.net/1822/79909 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Proença, M.; Rodrigues, M.S.; Meira, D.I.; Castro, M.C.R.; Rodrigues, P.V.; Machado, A.V.; Alves, E.; Barradas, N.P.; Borges, J.; Vaz, F. Optimization of Au:CuO Thin Films by Plasma Surface Modification for High-Resolution LSPR Gas Sensing at Room Temperature. Sensors 2022, 22, 7043. https://doi.org/10.3390/s22187043 1424-8220 1424-8220 10.3390/s22187043 36146392 https://www.mdpi.com/1424-8220/22/18/7043 |
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 |
Multidisciplinary Digital Publishing Institute |
publisher.none.fl_str_mv |
Multidisciplinary Digital Publishing Institute |
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 instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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