Thickness-dependent iridescence of one-dimensional photonic crystals based on anodic alumina

Thickness-dependent iridescence of one-dimensional photonic crystals based on anodic alumina One-dimensional photonic crystals based on anodic alumina are of high practical importance in modern materials science and photonics owing to wide variety of their applications: from optoelectronics to decorative coatings. Although the variety of anodizing regimes allows one to design the periodic modulation of the porosity of oxide film, the information about the optimal number of layers needed for the appearance of intense photonic band gaps is absent. Here the variation in the spectral properties of one-dimensional photonic crystals on the thickness of porous anodic alumina is examined. The samples consisted of up to 300 periods are obtained by anodizing of aluminium under square-wave current profile in sulfuric acid electrolyte. Fabry–Pérot optical interference of the porous film at different incident angles is used for the calculation of the wavelength dispersion of the effective refractive index of anodic alumina. The influence of the number of layers in anodic alumina photonic crystals on the intensity of photonic band gap and colour of oxide coating is discussed. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Materials & design Elsevier

Thickness-dependent iridescence of one-dimensional photonic crystals based on anodic alumina

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Publisher
Elsevier
Copyright
Copyright © 2018 Elsevier Ltd
ISSN
0264-1275
eISSN
0141-5530
D.O.I.
10.1016/j.matdes.2018.02.012
Publisher site
See Article on Publisher Site

Abstract

One-dimensional photonic crystals based on anodic alumina are of high practical importance in modern materials science and photonics owing to wide variety of their applications: from optoelectronics to decorative coatings. Although the variety of anodizing regimes allows one to design the periodic modulation of the porosity of oxide film, the information about the optimal number of layers needed for the appearance of intense photonic band gaps is absent. Here the variation in the spectral properties of one-dimensional photonic crystals on the thickness of porous anodic alumina is examined. The samples consisted of up to 300 periods are obtained by anodizing of aluminium under square-wave current profile in sulfuric acid electrolyte. Fabry–Pérot optical interference of the porous film at different incident angles is used for the calculation of the wavelength dispersion of the effective refractive index of anodic alumina. The influence of the number of layers in anodic alumina photonic crystals on the intensity of photonic band gap and colour of oxide coating is discussed.

Journal

Materials & designElsevier

Published: Apr 15, 2018

References

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