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Highly Tunable Superparamagnetic Colloidal Photonic Crystals
Author(s) -
Ge Jianping,
Hu Yongxing,
Yin Yadong
Publication year - 2007
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200701992
Subject(s) - superparamagnetism , photonic crystal , colloidal crystal , materials science , colloid , nanocrystal , cluster (spacecraft) , photonics , nanotechnology , magnetization , visible spectrum , optoelectronics , magnetic field , chemistry , physics , quantum mechanics , computer science , programming language
Tuning crystal : Superparamagnetic nanocrystal clusters can self‐assemble into colloidal photonic crystals in solution, whose stop bands can be magnetically tuned across the entire visible spectrum. Owing to the high magnetization and the highly charged polyacrylate‐capped surface of each cluster, the colloidal photonic crystals show a rapid, reversible, and widely tunable optical response to external magnetic fields.