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Effect of the anodization voltage on the pore-widening rate of nanoporous anodic alumina.

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.

SUBMITTER: Rahman MM

PROVIDER: S-EPMC3460793 | biostudies-other | 2012

REPOSITORIES: biostudies-other

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Effect of the anodization voltage on the pore-widening rate of nanoporous anodic alumina.

Rahman Mohammad Mahbubur MM Garcia-Caurel Enric E Santos Abel A Marsal Lluis F LF Pallarès Josep J Ferré-Borrull Josep J

Nanoscale research letters 20120823 1

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 obtain ...[more]

PMID: 22916731

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