title: Polymer Janus particles containing block-copolymer stabilized magnetic nanoparticles.
abstract: In this report, we show a simple route to fabricate Janus particles having magnetic nanoparticles inside them, which can respond and rotate along to magnetic fields. By solvent evaporation from the tetrahydrofran solution of polymer stabilized γ-Fe2O3 nanoparticles, polystyrene (PS), and polyisoprene containing water, aqueous dispersion of Janus microparticles were successfully prepared, and the γ-Fe2O3 nanoparticles were selectively introduced into the PS phase. We demonstrate rotation and accumulation of Janus particles by using a neodymium magnet.
authors.affiliation: Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, 2-1-1, Katahira, Sendai, Japan. yabu@tagen.tohoku.ac.jp
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Yabu
authors.forename: Masaaki
authors.initials: M
authors.lastname: Kanahara
authors.forename: Masatsugu
authors.initials: M
authors.lastname: Shimomura
authors.forename: Toshihiko
authors.initials: T
authors.lastname: Arita
authors.forename: Koji
authors.initials: K
authors.lastname: Harano
authors.forename: Eiichi
authors.initials: E
authors.lastname: Nakamura
authors.forename: Takeshi
authors.initials: T
authors.lastname: Higuchi
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Jinnai