What is it about?
We have shown how to precisely prepare layered porous optical materials (photonic crystals) by electrochemical oxidation of aluminium (anodizing). The materials behave strong reflection at the specific wavelength (photonic band gap). The possibility to tune that wavelength within the range of 250–1400 nm with an inaccuracy of <1% is shown.
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Why is it important?
The suggested approach allows one to precisely control the optical path length of each porous oxide layer in the layered porous optical material.
Perspectives
I hope this article open great possibilities for preparation of advanced photonic materials.
Dr. Sergey E Kushnir
Moskovskij gosudarstvennyj universitet imeni M V Lomonosova
Read the Original
This page is a summary of: Anodizing with voltage versus optical path length modulation: a new tool for the preparation of photonic structures, Journal of Materials Chemistry C, January 2018, Royal Society of Chemistry,
DOI: 10.1039/c8tc04246b.
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