| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Mozalev, Alexander
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (9/9 displayed)
- 2024Porous-anodic-alumina-templated Ta-Nb-alloy oxide coatings via the magnetron-sputtering anodizing as novel 3D nanostructured electrodes for energy-storage applicationscitations
- 2024XPS characterization of metal-oxide nanocolumn arrays via anodizing Al/Nb/Mo metal layers
- 2023Se-doped Nb2O5-Al2O3 composite-ceramic nanoarrays via the anodizing of Al/Nb bilayer in selenic acidcitations
- 2021Metal-substrate-supported tungsten-oxide nanoarrays via porous-alumina-assisted anodization: from nanocolumns to nanocapsules and nanotubes ; Nanouspořádané pole oxidů wolframu na kovovém substrátu vyrobené pomocí anodizace přes porézní aluminu: od nanosloupků po nanokaplsa a nanotrubkycitations
- 2021Anodic formation and SEM characterization of zirconium oxide nanostructured films
- 2021Dielectric properties of nanostructured mixed-oxide films formed by anodizing Al/Zr bilayers
- 2021The Growth, Composition, and Functional Properties of Self‐Organized Nanostructured ZrO2‐Al2O3 Anodic Films for Advanced Dielectric Applicationscitations
- 2018Resistive switching in TiO2 nanocolumn arrays electrochemically growncitations
- 2018Porous‐Alumina‐Assisted Growth of Nanostructured Anodic Films on Ti−Nb Alloyscitations
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article
Porous‐Alumina‐Assisted Growth of Nanostructured Anodic Films on Ti−Nb Alloys
Abstract
<jats:title>Abstract</jats:title><jats:p>Porous‐anodic‐alumina (PAA)‐assisted anodizing is employed, for the first time, for growing arrays of oxide nanocolumns on Ti−Nb alloy films with up to 58 at% Nb. Beyond about 24 at% Nb in the alloy, the system allows for high formation potentials of 250–420 V, giving columns that are 500–700 nm long, which are 100 % stable during the PAA etch. The stability worsens when lowering the Nb content in the alloy, owing to contamination of the column roots by alumina, which arises from the amorphous‐to‐crystalline transition of the anodic oxide, oxygen evolution, formation of O<jats:sub>2</jats:sub>‐filled nanobubbles within the roots, and development of bigger voids. The voids force the roots to regrow and spread laterally along with anodizing the surrounding Al residues, which increases alumina content in the titania‐based nanoroots. The incorporation of sufficient amounts of Nb<jats:sub>2</jats:sub>O<jats:sub>5</jats:sub> in the anodic TiO<jats:sub>2</jats:sub> hinders oxide crystallization and lowers alumina content in the roots, which stabilizes the columns. The two oxides are distributed uniformly along the columns, indicating comparable migration rates of Ti<jats:sup>4+</jats:sup> and Nb<jats:sup>5+</jats:sup> ions in the mixed anodic oxide. This uniform distribution, combined with possibly mixing the oxides at atomic level, is expected to narrow the band gap of the material, which is of vast importance for solar energy conversion applications.</jats:p>