| DOI | Trouver le DOI : https://doi.org/10.1039/c4ta02448f |
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| Auteur | Rechercher : Mohammadpour, Arash1; Rechercher : Shankar, Karthik1 |
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| Affiliation | - Conseil national de recherches du Canada. Technologies de sécurité et de rupture
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| Format | Texte, Article |
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| Sujet | Anodic oxidation; Aspect ratio; Electrodes; Magnetic fields; Nanotubes; Oxide films; Titanium; Anodization process; Anodization techniques; Anodization voltages; Floating potentials; High-aspect ratio; Microscale patterns; Nanostructured semiconductor; Substrate conductivity; Substrates |
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| Résumé | We present a magnetic field-assisted oxidation and etching process that transforms Ti thin films on arbitrary substrates into self-organized TiO 2 nanotube arrays without the direct application of an anodization voltage between the cathode and the Ti film/substrate. In effect, the Ti film/substrate electrode is at a floating potential determined by the ionic Hall voltage. The development of such a magnetic field-assisted electroless anodization process, frees the anodization technique of forming nanostructured semiconductors and metal oxides from the constraints of substrate conductivity and film continuity imposed by the traditional anodization process, and allows the creation of uniform anodic nanostructures on pre-existing high-aspect ratio patterns as well as on substrates containing both conductive and non-conductive areas. Using magnetic field assisted electroless anodization, we demonstrate the formation of microscale patterns of high quality TiO2 nanotubes from discontinuous Ti films deposited on thermal oxide-coated Si substrates and patterned by a lift-off process. |
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| Date de publication | 2014 |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Numéro NPARC | 21272901 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 9f118d0f-7567-4c58-8bae-9e92b2cddc65 |
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| Enregistrement créé | 2014-12-03 |
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| Enregistrement modifié | 2020-04-22 |
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