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Local Anodizing of a Newly Prepared Aluminum Micrometric Disk

A search through the literature reveals that the vast majority of studies about aluminum anodizing were conducted at the macroscale (i.e., from cm(2) up to m(2)), while those focused on local anodizing (i.e., on surfaces of less than 1 mm(2)) are rare. The last ones either used insulating masks or w...

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Detalles Bibliográficos
Autores principales: Cicutto, Ludovic, Roche, Jérome, Arurault, Laurent
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8912718/
https://www.ncbi.nlm.nih.gov/pubmed/35269332
http://dx.doi.org/10.3390/nano12050845
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author Cicutto, Ludovic
Roche, Jérome
Arurault, Laurent
author_facet Cicutto, Ludovic
Roche, Jérome
Arurault, Laurent
author_sort Cicutto, Ludovic
collection PubMed
description A search through the literature reveals that the vast majority of studies about aluminum anodizing were conducted at the macroscale (i.e., from cm(2) up to m(2)), while those focused on local anodizing (i.e., on surfaces of less than 1 mm(2)) are rare. The last ones either used insulating masks or were conducted in an electrolyte droplet. The present study describes on the one hand a new way to prepare aluminum microelectrodes of conventional disk-shaped geometry, and on the other hand the local anodizing of their respective aluminum micrometric top-disks. The influence of the anodizing voltage on anodic film characteristics (i.e., thickness, growth rate and expansion factor) was studied during local anodizing. Compared with the values reported for macroscopic anodizing, the pore diameter appears to be significantly low and the film growth rate can reach atypically high values, both specificities probably resulting from a very limited increase in the temperature on the aluminum surface during anodizing.
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spelling pubmed-89127182022-03-11 Local Anodizing of a Newly Prepared Aluminum Micrometric Disk Cicutto, Ludovic Roche, Jérome Arurault, Laurent Nanomaterials (Basel) Article A search through the literature reveals that the vast majority of studies about aluminum anodizing were conducted at the macroscale (i.e., from cm(2) up to m(2)), while those focused on local anodizing (i.e., on surfaces of less than 1 mm(2)) are rare. The last ones either used insulating masks or were conducted in an electrolyte droplet. The present study describes on the one hand a new way to prepare aluminum microelectrodes of conventional disk-shaped geometry, and on the other hand the local anodizing of their respective aluminum micrometric top-disks. The influence of the anodizing voltage on anodic film characteristics (i.e., thickness, growth rate and expansion factor) was studied during local anodizing. Compared with the values reported for macroscopic anodizing, the pore diameter appears to be significantly low and the film growth rate can reach atypically high values, both specificities probably resulting from a very limited increase in the temperature on the aluminum surface during anodizing. MDPI 2022-03-02 /pmc/articles/PMC8912718/ /pubmed/35269332 http://dx.doi.org/10.3390/nano12050845 Text en © 2022 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
Cicutto, Ludovic
Roche, Jérome
Arurault, Laurent
Local Anodizing of a Newly Prepared Aluminum Micrometric Disk
title Local Anodizing of a Newly Prepared Aluminum Micrometric Disk
title_full Local Anodizing of a Newly Prepared Aluminum Micrometric Disk
title_fullStr Local Anodizing of a Newly Prepared Aluminum Micrometric Disk
title_full_unstemmed Local Anodizing of a Newly Prepared Aluminum Micrometric Disk
title_short Local Anodizing of a Newly Prepared Aluminum Micrometric Disk
title_sort local anodizing of a newly prepared aluminum micrometric disk
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8912718/
https://www.ncbi.nlm.nih.gov/pubmed/35269332
http://dx.doi.org/10.3390/nano12050845
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