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Magnetically Tunable Colloidal Photonic Structures in Alkanol Solutions
Author(s) -
Ge Jianping,
Yin Yadong
Publication year - 2008
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.200800657
Subject(s) - colloid , materials science , photonics , superparamagnetism , nanotechnology , solvation , fabrication , photonic crystal , field (mathematics) , polymer , colloidal crystal , magnetic field , optoelectronics , molecule , chemistry , physics , organic chemistry , magnetization , composite material , medicine , alternative medicine , quantum mechanics , pathology , mathematics , pure mathematics
Magnetically tunable photonic structures are prepared in alkanol solutions by using silica‐modified superparamagnetic Fe 3 O 4 colloids as building blocks. Repulsive electrostatic and solvation forces and magnetically induced attractive forces contribute to the ordering of the Fe 3 O 4 @SiO 2 colloids. The ability to form tunable photonic structures in nonaqueous solutions allows the fabrication of field‐responsive polymer composite films for potential applications as displays and sensors.