Recommended implementation of electrical resistance tomography for conductivity mapping of metallic nanowire networks using voltage excitation

Abstract The knowledge of the spatial distribution of the electrical conductivity of metallic nanowire networks (NWN) is important for tailoring the performance in applications. This work focuses on Electrical Resistance Tomography (ERT), a technique that maps the electrical conductivity of a sample...

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Autores principales:	Alessandro Cultrera, Gianluca Milano, Natascia De Leo, Carlo Ricciardi, Luca Boarino, Luca Callegaro
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/9f47e1860edf4de4a5ba168ac36f13a8
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spelling	oai:doaj.org-article:9f47e1860edf4de4a5ba168ac36f13a82021-12-02T17:12:18ZRecommended implementation of electrical resistance tomography for conductivity mapping of metallic nanowire networks using voltage excitation10.1038/s41598-021-92208-w2045-2322https://doaj.org/article/9f47e1860edf4de4a5ba168ac36f13a82021-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-92208-whttps://doaj.org/toc/2045-2322Abstract The knowledge of the spatial distribution of the electrical conductivity of metallic nanowire networks (NWN) is important for tailoring the performance in applications. This work focuses on Electrical Resistance Tomography (ERT), a technique that maps the electrical conductivity of a sample from several resistance measurements performed on its border. We show that ERT can be successfully employed for NWN characterisation if a dedicated measurement protocol is employed. When applied to other materials, ERT measurements are typically performed with a constant current excitation; we show that, because of the peculiar microscopic structure and behaviour of metallic NWN, a constant voltage excitation protocols is preferable. This protocol maximises the signal to noise ratio in the resistance measurements—and thus the accuracy of ERT maps—while preventing the onset of sample alterations.Alessandro CultreraGianluca MilanoNatascia De LeoCarlo RicciardiLuca BoarinoLuca CallegaroNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Alessandro Cultrera Gianluca Milano Natascia De Leo Carlo Ricciardi Luca Boarino Luca Callegaro Recommended implementation of electrical resistance tomography for conductivity mapping of metallic nanowire networks using voltage excitation
description	Abstract The knowledge of the spatial distribution of the electrical conductivity of metallic nanowire networks (NWN) is important for tailoring the performance in applications. This work focuses on Electrical Resistance Tomography (ERT), a technique that maps the electrical conductivity of a sample from several resistance measurements performed on its border. We show that ERT can be successfully employed for NWN characterisation if a dedicated measurement protocol is employed. When applied to other materials, ERT measurements are typically performed with a constant current excitation; we show that, because of the peculiar microscopic structure and behaviour of metallic NWN, a constant voltage excitation protocols is preferable. This protocol maximises the signal to noise ratio in the resistance measurements—and thus the accuracy of ERT maps—while preventing the onset of sample alterations.
format	article
author	Alessandro Cultrera Gianluca Milano Natascia De Leo Carlo Ricciardi Luca Boarino Luca Callegaro
author_facet	Alessandro Cultrera Gianluca Milano Natascia De Leo Carlo Ricciardi Luca Boarino Luca Callegaro
author_sort	Alessandro Cultrera
title	Recommended implementation of electrical resistance tomography for conductivity mapping of metallic nanowire networks using voltage excitation
title_short	Recommended implementation of electrical resistance tomography for conductivity mapping of metallic nanowire networks using voltage excitation
title_full	Recommended implementation of electrical resistance tomography for conductivity mapping of metallic nanowire networks using voltage excitation
title_fullStr	Recommended implementation of electrical resistance tomography for conductivity mapping of metallic nanowire networks using voltage excitation
title_full_unstemmed	Recommended implementation of electrical resistance tomography for conductivity mapping of metallic nanowire networks using voltage excitation
title_sort	recommended implementation of electrical resistance tomography for conductivity mapping of metallic nanowire networks using voltage excitation
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/9f47e1860edf4de4a5ba168ac36f13a8
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Recommended implementation of electrical resistance tomography for conductivity mapping of metallic nanowire networks using voltage excitation

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