title: Magnetically induced pattern formation in phase separating polymer-solvent-nanoparticle mixtures.
abstract: Permanent magnetic structures with controlled dimension and architecture (labyrinthine, hexagonal, or dispersed columnar) are formed in a partially miscible ferrofluid-nonferrofluid mixture under the influence of a perpendicular magnetic field. The origin of the permanent structures, which have characteristic lateral dimensions ranging from 1 to 10  μm, is the repartitioning of the ferrofluid carrier solvent into the nonferrofluid polymeric phase. This polymer-solvent phase separation under a magnetic field leads to departures from the expected final dimension of the magnetically stabilized ferrofluid droplet sizes.
authors.affiliation: Biological and Soft Systems Sector, Cavendish Laboratory, University of Cambridge, CB3 0HE, United Kingdom.
authors.forename: Rakchanok
authors.initials: R
authors.lastname: Rungsawang
authors.forename: Joakim
authors.initials: J
authors.lastname: da Silva
authors.forename: Cheng-Pei
authors.initials: CP
authors.lastname: Wu
authors.forename: Easan
authors.initials: E
authors.lastname: Sivaniah
authors.forename: Adrian
authors.initials: A
authors.lastname: Ionescu
authors.forename: Crispin H W
authors.initials: CH
authors.lastname: Barnes
authors.forename: Nicholas J
authors.initials: NJ
authors.lastname: Darton