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Formation of Periodically Ordered Zinc Oxide Nanopillars in Aqueous Solution: An Approach to Photonic Crystals at Visible Wavelengths
Author(s) -
Matsuu M.,
Shimada S.,
Masuya K.,
Hirano S.,
Kuwabara M.
Publication year - 2006
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200502383
Subject(s) - nanopillar , materials science , wavelength , photonic crystal , aqueous solution , photonics , optoelectronics , polymer , zinc , visible spectrum , hexagonal crystal system , nanotechnology , optics , nanostructure , composite material , crystallography , chemistry , metallurgy , physics
ZnO nanopillar arrays with high aspect ratios , such as the one shown in the figure, are fabricated from aqueous solutions at low temperatures using a polymer mold. The shape and dimensions of the nanopillars can be tuned by appropriately patterning the polymer mold. A hexagonal ZnO nanopillar array shows photonic bandgaps at visible wavelengths, as predicted by photonic band structure calculations.