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Photo‐Reversible Regulation of Optical Stop Bands
Author(s) -
Gu Z.Z.,
Iyoda T.,
Fujishima A.,
Sato O.
Publication year - 2001
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 - 10.1002/1521-4095(200109)13:17<1295::aid-adma1295>3.0.co;2-7
Subject(s) - photochromism , materials science , optoelectronics , photonic crystal , photonics , nanotechnology
Photo‐reversible tunable photonic crystals have been fabricated by the infiltration of photochromic dyes into the voids of opal films. The enhanced changes in refractive indices due to the resonance effect of the dyes regulate the stop bands of the dyed opals. All changes can be reversibly tuned back and forth (see Figure) giving these photonic crystals excellent potential for applications in optical transfer devices (see also cover).