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Fabrication and Assembly of Magneto‐Responsive, Anisotropic, and Hybrid Microparticles of Variable Size and Shape
Author(s) -
Lee Su Yeon,
Yang Shu
Publication year - 2013
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.201304183
Subject(s) - nanotechnology , fabrication , materials science , hexagonal crystal system , magnet , nanoparticle , emulsion , oxide , magnetism , anisotropy , microsphere , computer science , chemical engineering , mechanical engineering , chemistry , physics , crystallography , engineering , optics , metallurgy , medicine , alternative medicine , pathology , quantum mechanics
Molded magnets : The co‐assembly of silica colloids and iron oxide nanoparticles in a PDMS mold gives magnetic responsive microparticles. When dispersed in an aqueous solution (see picture), the microparticles could rotate and flip under the action of a magnetic field (1 kG). The particles could also be reversibly switched between aligned chain structures and a hexagonal array in both bulk solutions and in emulsion droplets.