Electrical properties and chemiresistive response to 2,4,6 trinitrotoluene vapours of large area arrays of Ge nanowires

We study the electrical and morphological properties of random arrays of Ge nanowires (NW) deposited on sapphire substrates. NW-based devices were fabricated with the aim of developing chemiresistive-type sensors for the detection of explosive vapours. We present the results obtained on pristine and...

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Autores principales: Frigeri, Paola, Gombia, Enos, Bosi, Matteo, Trevisi, Giovanna, Seravalli, Luca, Ferrari, Claudio
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer US 2023
Materias:
Research
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9905404/
https://www.ncbi.nlm.nih.gov/pubmed/36749462
http://dx.doi.org/10.1186/s11671-023-03780-1
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author Frigeri, Paola
Gombia, Enos
Bosi, Matteo
Trevisi, Giovanna
Seravalli, Luca
Ferrari, Claudio
author_facet Frigeri, Paola
Gombia, Enos
Bosi, Matteo
Trevisi, Giovanna
Seravalli, Luca
Ferrari, Claudio
author_sort Frigeri, Paola
collection PubMed
description We study the electrical and morphological properties of random arrays of Ge nanowires (NW) deposited on sapphire substrates. NW-based devices were fabricated with the aim of developing chemiresistive-type sensors for the detection of explosive vapours. We present the results obtained on pristine and annealed NWs and, focusing on the different phenomenology observed, we discuss the critical role played by NW–NW junctions on the electrical conduction and sensing performances. A mechanism is proposed to explain the high efficiency of the annealed arrays of NWs in detecting 2,4,6 trinitrotoluene vapours. This study shows the promising potential of Ge NW-based sensors in the field of civil security.
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spelling pubmed-99054042023-02-08 Electrical properties and chemiresistive response to 2,4,6 trinitrotoluene vapours of large area arrays of Ge nanowires Frigeri, Paola Gombia, Enos Bosi, Matteo Trevisi, Giovanna Seravalli, Luca Ferrari, Claudio Discov Nano Research We study the electrical and morphological properties of random arrays of Ge nanowires (NW) deposited on sapphire substrates. NW-based devices were fabricated with the aim of developing chemiresistive-type sensors for the detection of explosive vapours. We present the results obtained on pristine and annealed NWs and, focusing on the different phenomenology observed, we discuss the critical role played by NW–NW junctions on the electrical conduction and sensing performances. A mechanism is proposed to explain the high efficiency of the annealed arrays of NWs in detecting 2,4,6 trinitrotoluene vapours. This study shows the promising potential of Ge NW-based sensors in the field of civil security. Springer US 2023-02-07 /pmc/articles/PMC9905404/ /pubmed/36749462 http://dx.doi.org/10.1186/s11671-023-03780-1 Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Research
Frigeri, Paola
Gombia, Enos
Bosi, Matteo
Trevisi, Giovanna
Seravalli, Luca
Ferrari, Claudio
Electrical properties and chemiresistive response to 2,4,6 trinitrotoluene vapours of large area arrays of Ge nanowires
title Electrical properties and chemiresistive response to 2,4,6 trinitrotoluene vapours of large area arrays of Ge nanowires
title_full Electrical properties and chemiresistive response to 2,4,6 trinitrotoluene vapours of large area arrays of Ge nanowires
title_fullStr Electrical properties and chemiresistive response to 2,4,6 trinitrotoluene vapours of large area arrays of Ge nanowires
title_full_unstemmed Electrical properties and chemiresistive response to 2,4,6 trinitrotoluene vapours of large area arrays of Ge nanowires
title_short Electrical properties and chemiresistive response to 2,4,6 trinitrotoluene vapours of large area arrays of Ge nanowires
title_sort electrical properties and chemiresistive response to 2,4,6 trinitrotoluene vapours of large area arrays of ge nanowires
topic Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9905404/
https://www.ncbi.nlm.nih.gov/pubmed/36749462
http://dx.doi.org/10.1186/s11671-023-03780-1
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