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Dynamic Modulation of Photonic Bandgaps in Crystalline Colloidal Arrays Under Electric Field
Author(s) -
Shim Tae Soup,
Kim ShinHyun,
Sim Jae Young,
Lim JongMin,
Yang SeungMan
Publication year - 2010
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.201001227
Subject(s) - electrokinetic phenomena , electric field , materials science , photonic crystal , colloidal crystal , photonics , modulation (music) , nanotechnology , colloid , optoelectronics , field (mathematics) , band gap , physics , chemistry , quantum mechanics , acoustics , mathematics , pure mathematics
Dynamic modulation of photonic bandgaps in crystalline colloidal arrays is achieved by application of electric field. Highly charged polystyrene particles spontaneously create the crystal lattice, which is compressed or relaxed under external electric field by electrokinetic force. As a result, structural color of colloidal crystals as a photonic bandgap can be tuned or fixed with unprecedentedly fast and precise manner.