Modeling the specular spectral reflectance of partially ordered alumina nanopores on an aluminum substrate - Mines Saint-Étienne Access content directly
Journal Articles Optics Express Year : 2015

Modeling the specular spectral reflectance of partially ordered alumina nanopores on an aluminum substrate

Abstract

Anodizing of aluminum generates a porous alumina layer comprising cylindrical nanopores (300 nm diameter) extending essentially perpendicular to the substrate. The pore distribution over the surface exhibits a short-distance order close to hexagonal arrangement. On the contrary, long-distance order cannot be defined: the arrangement is not periodic. Visual observation of such nanoporous layers shows a reddish specular reflectance consistent with reflectance spectrum measurements. This work is a parametric study aiming at demonstrating that color effects are caused by the presence of disorder illustrated by the deviations from periodicity in terms of nanopore location and nanopore radius. Using the method of Rigorous Coupled Wave Analysis (RCWA), the reflectance spectrum has been simulated. Although our calculations were done using a simple one-dimensional (1D) model, a fair fit with experimental results is found.
Fichier principal
Vignette du fichier
islandora_35708.pdf (1.02 Mo) Télécharger le fichier
Origin : Publisher files allowed on an open archive

Dates and versions

emse-01145567 , version 1 (11-10-2023)

Identifiers

Cite

Dengfeng Kuang, Charrière Renée, Natalia Matsapey, Manuel Flury, Jenny Faucheu, et al.. Modeling the specular spectral reflectance of partially ordered alumina nanopores on an aluminum substrate. Optics Express, 2015, 23 (4), pp.4506-4516. ⟨10.1364/OE.23.004506⟩. ⟨emse-01145567⟩
93 View
7 Download

Altmetric

Share

Gmail Facebook X LinkedIn More