Piezoresistive response of nano-architectured TixCuy thin films for sensor applications
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/1822/43396 |
Resumo: | The present work reports on the development of piezoresistive TixCuy thin films, deposited on polymeric substrates (PET). The general idea was to analyse the influence of the Cu concentration on the signal response of the Ti-based transducers, exploring the possibility to use this thin film system as force and deformation sensors in biomedical sensing devices. The GLancing Angle Deposition, GLAD, technique was used to change the typical normal columnar growth microstructure into inclined (zigzag-like) architectures, aiming to tune the mechanical and electrical responses of the thin films, which may offer unique opportunities for several sensing devices. Inclined (zigzag grown) thin films were prepared with increasing amounts of Cu and characterized in terms of the most relevant properties for sensing applications. The piezoresistive response was analyzed trough the evaluation of the Gauge Factor, K. The incident angles of the particle flux = 45º were used to prepare the nano-architectured zigzag TixCuy thin films. The Gauge factor ranges from 1.24 ± 0.03 to 16.34±0.43 for intermetallic Ti0.92Cu0.08 and pure Cu thin films, respectively. For the deposited thin films small voids are formed and the voids density decreases considerably with increasing Cu content. Taking in account the: electrical resistance linearity, low noise and the highest K value found for TixCuy films (K= 3.6±0.1), the most promising results were obtained when the polymer was coated with a stoichiometry ofTi0.37Cu0.63. The overall set of results also show the viability of these materials to be used as piezoresistive sensors, namely in biological environments, such as catheters, needles or endoscopes with sensing capabilities. |
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Piezoresistive response of nano-architectured TixCuy thin films for sensor applicationsPiezoresistiveGauge FactorGLADThin FilmsTitaniumCopperCiências Naturais::Ciências FísicasScience & TechnologyThe present work reports on the development of piezoresistive TixCuy thin films, deposited on polymeric substrates (PET). The general idea was to analyse the influence of the Cu concentration on the signal response of the Ti-based transducers, exploring the possibility to use this thin film system as force and deformation sensors in biomedical sensing devices. The GLancing Angle Deposition, GLAD, technique was used to change the typical normal columnar growth microstructure into inclined (zigzag-like) architectures, aiming to tune the mechanical and electrical responses of the thin films, which may offer unique opportunities for several sensing devices. Inclined (zigzag grown) thin films were prepared with increasing amounts of Cu and characterized in terms of the most relevant properties for sensing applications. The piezoresistive response was analyzed trough the evaluation of the Gauge Factor, K. The incident angles of the particle flux = 45º were used to prepare the nano-architectured zigzag TixCuy thin films. The Gauge factor ranges from 1.24 ± 0.03 to 16.34±0.43 for intermetallic Ti0.92Cu0.08 and pure Cu thin films, respectively. For the deposited thin films small voids are formed and the voids density decreases considerably with increasing Cu content. Taking in account the: electrical resistance linearity, low noise and the highest K value found for TixCuy films (K= 3.6±0.1), the most promising results were obtained when the polymer was coated with a stoichiometry ofTi0.37Cu0.63. The overall set of results also show the viability of these materials to be used as piezoresistive sensors, namely in biological environments, such as catheters, needles or endoscopes with sensing capabilities.The authors also thank FCT for financial support: A. Ferreira and C. Lopes thanks the FCT for grant SFRH/BPD/102402/2014 and SFRH/BD/103373/2014. The authors thank financial support from the Basque Government Industry Department under the ELKARTEK Program. SLM thanks the Diputación de Bizkaia for financial support under the Bizkaia Talent program.Elsevier Science SAUniversidade do MinhoFerreira, Armando José BarrosBorges, J.Lopes, C.Martin, N.Lanceros-Méndez, S.Vaz, F.20162016-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/43396engFerreira, A., Borges, J., Lopes, C., Martin, N., Lanceros-Mendez, S., & Vaz, F. (2016). Piezoresistive response of nano-architectured TixCuy thin films for sensor applications. Sensors and Actuators a-Physical, 247, 105-114. doi: 10.1016/j.sna.2016.05.0330924-424710.1016/j.sna.2016.05.033info: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:RCAAP2023-07-21T12:46:59Zoai:repositorium.sdum.uminho.pt:1822/43396Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:45:02.228476Repositório 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 |
Piezoresistive response of nano-architectured TixCuy thin films for sensor applications |
title |
Piezoresistive response of nano-architectured TixCuy thin films for sensor applications |
spellingShingle |
Piezoresistive response of nano-architectured TixCuy thin films for sensor applications Ferreira, Armando José Barros Piezoresistive Gauge Factor GLAD Thin Films Titanium Copper Ciências Naturais::Ciências Físicas Science & Technology |
title_short |
Piezoresistive response of nano-architectured TixCuy thin films for sensor applications |
title_full |
Piezoresistive response of nano-architectured TixCuy thin films for sensor applications |
title_fullStr |
Piezoresistive response of nano-architectured TixCuy thin films for sensor applications |
title_full_unstemmed |
Piezoresistive response of nano-architectured TixCuy thin films for sensor applications |
title_sort |
Piezoresistive response of nano-architectured TixCuy thin films for sensor applications |
author |
Ferreira, Armando José Barros |
author_facet |
Ferreira, Armando José Barros Borges, J. Lopes, C. Martin, N. Lanceros-Méndez, S. Vaz, F. |
author_role |
author |
author2 |
Borges, J. Lopes, C. Martin, N. Lanceros-Méndez, S. Vaz, F. |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Ferreira, Armando José Barros Borges, J. Lopes, C. Martin, N. Lanceros-Méndez, S. Vaz, F. |
dc.subject.por.fl_str_mv |
Piezoresistive Gauge Factor GLAD Thin Films Titanium Copper Ciências Naturais::Ciências Físicas Science & Technology |
topic |
Piezoresistive Gauge Factor GLAD Thin Films Titanium Copper Ciências Naturais::Ciências Físicas Science & Technology |
description |
The present work reports on the development of piezoresistive TixCuy thin films, deposited on polymeric substrates (PET). The general idea was to analyse the influence of the Cu concentration on the signal response of the Ti-based transducers, exploring the possibility to use this thin film system as force and deformation sensors in biomedical sensing devices. The GLancing Angle Deposition, GLAD, technique was used to change the typical normal columnar growth microstructure into inclined (zigzag-like) architectures, aiming to tune the mechanical and electrical responses of the thin films, which may offer unique opportunities for several sensing devices. Inclined (zigzag grown) thin films were prepared with increasing amounts of Cu and characterized in terms of the most relevant properties for sensing applications. The piezoresistive response was analyzed trough the evaluation of the Gauge Factor, K. The incident angles of the particle flux = 45º were used to prepare the nano-architectured zigzag TixCuy thin films. The Gauge factor ranges from 1.24 ± 0.03 to 16.34±0.43 for intermetallic Ti0.92Cu0.08 and pure Cu thin films, respectively. For the deposited thin films small voids are formed and the voids density decreases considerably with increasing Cu content. Taking in account the: electrical resistance linearity, low noise and the highest K value found for TixCuy films (K= 3.6±0.1), the most promising results were obtained when the polymer was coated with a stoichiometry ofTi0.37Cu0.63. The overall set of results also show the viability of these materials to be used as piezoresistive sensors, namely in biological environments, such as catheters, needles or endoscopes with sensing capabilities. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016 2016-01-01T00:00:00Z |
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 |
http://hdl.handle.net/1822/43396 |
url |
http://hdl.handle.net/1822/43396 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Ferreira, A., Borges, J., Lopes, C., Martin, N., Lanceros-Mendez, S., & Vaz, F. (2016). Piezoresistive response of nano-architectured TixCuy thin films for sensor applications. Sensors and Actuators a-Physical, 247, 105-114. doi: 10.1016/j.sna.2016.05.033 0924-4247 10.1016/j.sna.2016.05.033 |
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 Science SA |
publisher.none.fl_str_mv |
Elsevier Science SA |
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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