Abstract
A
lumina thin films with rainbow stripe d structural colors have been fabricated by one step electrochemical oxidation of Al foil.
The relationship s of t he colors and density of rainbow stripes with the oxidation voltage and time in oxalic acid solution, as
well as the angle of the cathode and anode are discussed. A theoretical study of the changes in colors and density of rainbow
stripes is consistent with the experimental results. The test results of polarization s how that reflected interference light from
the top and bottom surface s of alumina th in films are linearly polarized These films were synthesized using a simplified
process and has potential application in optical display technology, polarizer s , analyzer s , decoration s and anti counterfeiting.
Keywords
Alumina thin films, Electrochemical oxidation , Rainbow stripes, Polarization.
Citation
SHUMIN YANG, YUNKAI QI, LIJUN ZHENG, WEI HAN, WEI YANG, JIANJUN GU, Synthesis and optical properties of alumina thin films with rainbow stripes structural colors, Optoelectronics and Advanced Materials - Rapid Communications, 10, 9-10, September-October 2016, pp.769-773 (2016).
Submitted at: Aug. 14, 2014
Accepted at: Sept. 29, 2016