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Fabrication and Characterization of Flexible and Miniaturized Humidity Sensors Using Screen-Printed TiO(2) Nanoparticles as Sensitive Layer

This paper describes the fabrication and the characterization of an original example of a miniaturized resistive-type humidity sensor, printed on flexible substrate in a large-scale manner. The fabrication process involves laser ablation for the design of interdigitated electrodes on PET (Poly-Ethyl...

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Autores principales: Dubourg, Georges, Segkos, Apostolos, Katona, Jaroslav, Radović, Marko, Savić, Slavica, Niarchos, Georgios, Tsamis, Christos, Crnojević-Bengin, Vesna
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5579961/
https://www.ncbi.nlm.nih.gov/pubmed/28800063
http://dx.doi.org/10.3390/s17081854
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author Dubourg, Georges
Segkos, Apostolos
Katona, Jaroslav
Radović, Marko
Savić, Slavica
Niarchos, Georgios
Tsamis, Christos
Crnojević-Bengin, Vesna
author_facet Dubourg, Georges
Segkos, Apostolos
Katona, Jaroslav
Radović, Marko
Savić, Slavica
Niarchos, Georgios
Tsamis, Christos
Crnojević-Bengin, Vesna
author_sort Dubourg, Georges
collection PubMed
description This paper describes the fabrication and the characterization of an original example of a miniaturized resistive-type humidity sensor, printed on flexible substrate in a large-scale manner. The fabrication process involves laser ablation for the design of interdigitated electrodes on PET (Poly-Ethylene Terephthalate) substrate and a screen-printing process for the deposition of the sensitive material, which is based on TiO(2) nanoparticles. The laser ablation process was carefully optimized to obtain micro-scale and well-resolved electrodes on PET substrate. A functional paste based on cellulose was prepared in order to allow the precise screen-printing of the TiO(2) nanoparticles as sensing material on the top of the electrodes. The current against voltage (I–V) characteristic of the sensor showed good linearity and potential for low-power operation. The results of a humidity-sensing investigation and mechanical testing showed that the fabricated miniaturized sensors have excellent mechanical stability, sensing characteristics, good repeatability, and relatively fast response/recovery times operating at room temperature.
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spelling pubmed-55799612017-09-06 Fabrication and Characterization of Flexible and Miniaturized Humidity Sensors Using Screen-Printed TiO(2) Nanoparticles as Sensitive Layer Dubourg, Georges Segkos, Apostolos Katona, Jaroslav Radović, Marko Savić, Slavica Niarchos, Georgios Tsamis, Christos Crnojević-Bengin, Vesna Sensors (Basel) Article This paper describes the fabrication and the characterization of an original example of a miniaturized resistive-type humidity sensor, printed on flexible substrate in a large-scale manner. The fabrication process involves laser ablation for the design of interdigitated electrodes on PET (Poly-Ethylene Terephthalate) substrate and a screen-printing process for the deposition of the sensitive material, which is based on TiO(2) nanoparticles. The laser ablation process was carefully optimized to obtain micro-scale and well-resolved electrodes on PET substrate. A functional paste based on cellulose was prepared in order to allow the precise screen-printing of the TiO(2) nanoparticles as sensing material on the top of the electrodes. The current against voltage (I–V) characteristic of the sensor showed good linearity and potential for low-power operation. The results of a humidity-sensing investigation and mechanical testing showed that the fabricated miniaturized sensors have excellent mechanical stability, sensing characteristics, good repeatability, and relatively fast response/recovery times operating at room temperature. MDPI 2017-08-11 /pmc/articles/PMC5579961/ /pubmed/28800063 http://dx.doi.org/10.3390/s17081854 Text en © 2017 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Dubourg, Georges
Segkos, Apostolos
Katona, Jaroslav
Radović, Marko
Savić, Slavica
Niarchos, Georgios
Tsamis, Christos
Crnojević-Bengin, Vesna
Fabrication and Characterization of Flexible and Miniaturized Humidity Sensors Using Screen-Printed TiO(2) Nanoparticles as Sensitive Layer
title Fabrication and Characterization of Flexible and Miniaturized Humidity Sensors Using Screen-Printed TiO(2) Nanoparticles as Sensitive Layer
title_full Fabrication and Characterization of Flexible and Miniaturized Humidity Sensors Using Screen-Printed TiO(2) Nanoparticles as Sensitive Layer
title_fullStr Fabrication and Characterization of Flexible and Miniaturized Humidity Sensors Using Screen-Printed TiO(2) Nanoparticles as Sensitive Layer
title_full_unstemmed Fabrication and Characterization of Flexible and Miniaturized Humidity Sensors Using Screen-Printed TiO(2) Nanoparticles as Sensitive Layer
title_short Fabrication and Characterization of Flexible and Miniaturized Humidity Sensors Using Screen-Printed TiO(2) Nanoparticles as Sensitive Layer
title_sort fabrication and characterization of flexible and miniaturized humidity sensors using screen-printed tio(2) nanoparticles as sensitive layer
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5579961/
https://www.ncbi.nlm.nih.gov/pubmed/28800063
http://dx.doi.org/10.3390/s17081854
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