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Self-Ordered Aluminum Anodizing in Phosphonoacetic Acid and Its Structural Coloration
Author(s) -
Akimasa Takenaga,
Takeshi Kikuchi,
Shungo Natsui,
Ryosuke O. Suzuki
Publication year - 2015
Publication title -
ecs solid state letters
Language(s) - English
Resource type - Journals
eISSN - 2162-8742
pISSN - 2162-8750
DOI - 10.1149/2.0021508ssl
Subject(s) - anodizing , aluminium , materials science , anode , porosity , electrochemistry , wavelength , voltage , chemical engineering , metallurgy , composite material , optoelectronics , chemistry , electrode , electrical engineering , engineering
Ordered anodic porous alumina with large-scale periodicity was fabricated via phosphonoacetic acid anodizing. Aluminum specimens were anodized in a 0.1–0.9 M phosphonoacetic acid solution under various electrochemical operating conditions, and optimum anodizing at 205–225 V exhibited self-ordering growth of the porous alumina. These self-ordering voltages during phosphonoacetic acid anodizing filled an undiscovered vacant region in the linear relationship between the self-ordering voltage and the cell diameter. The nanostructured aluminum surface formed via self-ordering phosphonoacetic acid anodizing produced a bright structural coloration with a visible light wavelength of 500–700 nm, which is useful for optical nanoapplications

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