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Air‐Pulse‐Drive Fabrication of Photonic Crystal Films of Colloids with High Spectral Quality
Author(s) -
Kanai T.,
Sawada T.,
Toyotama A.,
Kitamura K.
Publication year - 2005
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.200305160
Subject(s) - materials science , photonic crystal , opacity , transmittance , capillary action , colloid , optoelectronics , photonics , wavelength , fabrication , band gap , colloidal crystal , texture (cosmology) , optics , composite material , chemical engineering , medicine , physics , alternative medicine , image (mathematics) , pathology , artificial intelligence , computer science , engineering
A fast and highly controllable method of fabricating large films of photonic crystals of colloids is reported. A charge‐stabilized colloidal suspension was run in a flat capillary driven by a pressure‐regulated air pulse. The colloidal crystal texture formed in the capillary was a sensitive function of air pressure. Above a critical pressure, the entire capillary was filled with a uniform single‐domain texture whose transmittance spectrum showed a high quality as a photonic crystal, i.e., excellent opacity at a photonic bandgap and high transparency at other wavelengths. The present method is easily applicable to industrial processes for mass production.