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https://hdl.handle.net/2440/88821
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Type: | Journal article |
Title: | Effect of the anodization voltage on the pore-widening rate of nanoporous anodic alumina |
Author: | Rahman, M. Garcia-Caurel, E. Santos, A. Marsal, L. Pallarès, J. Ferré-Borrull, J. |
Citation: | Nanoscale Research Letters, 2012; 7(1):474-1-474-7 |
Publisher: | Springer-Verlag |
Issue Date: | 2012 |
ISSN: | 1931-7573 1556-276X |
Statement of Responsibility: | Mohammad Mahbubur Rahman, Enric Garcia-Caurel, Abel Santos, Lluis F Marsal, Josep Pallarès, Josep Ferré-Borrull |
Abstract: | A detailed study of the pore-widening rate of nanoporous anodic alumina layers as a function of the anodization voltage was carried out. The study focuses on samples produced under the same electrolyte and concentration but different anodization voltages within the self-ordering regime. By means of ellipsometry-based optical characterization, it is shown that in the pore-widening process, the porosity increases at a faster rate for lower anodization voltages. This opens the possibility of obtaining three-dimensional nanostructured nanoporous anodic alumina with controlled thickness and refractive index of each layer, and with a refractive index difference of up to 0.24 between layers, for samples produced with oxalic acid electrolytes. |
Keywords: | Anodization voltage Alumina Nanostructures Nanoporous anodic alumina Ellipsometry |
Rights: | © 2012 Rahman et al.; licensee Springer. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
DOI: | 10.1186/1556-276X-7-474 |
Published version: | http://dx.doi.org/10.1186/1556-276x-7-474 |
Appears in Collections: | Aurora harvest 2 Chemical Engineering publications |
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