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Sensing Performance of Thermal Electronic Noses: A Comparison between ZnO and SnO(2) Nanowires

In recent times, an increasing number of applications in different fields need gas sensors that are miniaturized but also capable of distinguishing different gases and volatiles. Thermal electronic noses are new devices that meet this need, but their performance is still under study. In this work, w...

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Detalles Bibliográficos
Autores principales: Tonezzer, Matteo, Armellini, Cristina, Toniutti, Laura
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8624967/
https://www.ncbi.nlm.nih.gov/pubmed/34835538
http://dx.doi.org/10.3390/nano11112773
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author Tonezzer, Matteo
Armellini, Cristina
Toniutti, Laura
author_facet Tonezzer, Matteo
Armellini, Cristina
Toniutti, Laura
author_sort Tonezzer, Matteo
collection PubMed
description In recent times, an increasing number of applications in different fields need gas sensors that are miniaturized but also capable of distinguishing different gases and volatiles. Thermal electronic noses are new devices that meet this need, but their performance is still under study. In this work, we compare the performance of two thermal electronic noses based on SnO(2) and ZnO nanowires. Using five different target gases (acetone, ammonia, ethanol, hydrogen and nitrogen dioxide), we investigated the ability of the systems to distinguish individual gases and estimate their concentration. SnO(2) nanowires proved to be more suitable for this purpose with a detection limit of 32 parts per billion, an always correct classification (100%) and a mean absolute error of 7 parts per million.
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spelling pubmed-86249672021-11-27 Sensing Performance of Thermal Electronic Noses: A Comparison between ZnO and SnO(2) Nanowires Tonezzer, Matteo Armellini, Cristina Toniutti, Laura Nanomaterials (Basel) Article In recent times, an increasing number of applications in different fields need gas sensors that are miniaturized but also capable of distinguishing different gases and volatiles. Thermal electronic noses are new devices that meet this need, but their performance is still under study. In this work, we compare the performance of two thermal electronic noses based on SnO(2) and ZnO nanowires. Using five different target gases (acetone, ammonia, ethanol, hydrogen and nitrogen dioxide), we investigated the ability of the systems to distinguish individual gases and estimate their concentration. SnO(2) nanowires proved to be more suitable for this purpose with a detection limit of 32 parts per billion, an always correct classification (100%) and a mean absolute error of 7 parts per million. MDPI 2021-10-20 /pmc/articles/PMC8624967/ /pubmed/34835538 http://dx.doi.org/10.3390/nano11112773 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/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 (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Tonezzer, Matteo
Armellini, Cristina
Toniutti, Laura
Sensing Performance of Thermal Electronic Noses: A Comparison between ZnO and SnO(2) Nanowires
title Sensing Performance of Thermal Electronic Noses: A Comparison between ZnO and SnO(2) Nanowires
title_full Sensing Performance of Thermal Electronic Noses: A Comparison between ZnO and SnO(2) Nanowires
title_fullStr Sensing Performance of Thermal Electronic Noses: A Comparison between ZnO and SnO(2) Nanowires
title_full_unstemmed Sensing Performance of Thermal Electronic Noses: A Comparison between ZnO and SnO(2) Nanowires
title_short Sensing Performance of Thermal Electronic Noses: A Comparison between ZnO and SnO(2) Nanowires
title_sort sensing performance of thermal electronic noses: a comparison between zno and sno(2) nanowires
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8624967/
https://www.ncbi.nlm.nih.gov/pubmed/34835538
http://dx.doi.org/10.3390/nano11112773
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