title: Patterned magnetic rings fabricated by dewetting of polymer-coated magnetite nanoparticles solution.
abstract: Here we present a simple and controlled method for direct fabrication of ordered 2D arrays of magnetic rings. This method utilizes polystyrene-coated magnetite nanoparticles as a solution, and the magnetic rings are fabricated on patterned self-assembled monolayers by dewetting of the solution. Polystyrene-coated magnetite nanoparticles were synthesized by atom-transfer radical polymerization, which promoted the dispersibility and stability of magnetite nanoparticles in chloroform. Magnetic rings were studied using optical photograph, SEM, and magnetic force microscopy. This approach offers a new way for patterning nanoparticulate rings with deliberate control over feature composition, size, as well as interfeature distance.
authors.affiliation: Key Lab for Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, Peoples's Republic of China.
authors.forename: Lijuan
authors.initials: L
authors.lastname: An
authors.forename: Wei
authors.initials: W
authors.lastname: Li
authors.forename: Yaru
authors.initials: Y
authors.lastname: Nie
authors.forename: Bin
authors.initials: B
authors.lastname: Xie
authors.forename: Zhaoqiang
authors.initials: Z
authors.lastname: Li
authors.forename: Junhu
authors.initials: J
authors.lastname: Zhang
authors.forename: Bai
authors.initials: B
authors.lastname: Yang
mesh_terms: D052203:Ferrosoferric Oxide / Q000737:chemistry*; D008280:Magnetics; D049329:Nanostructures / Q000737:chemistry*; D010316:Particle Size; D011137:Polystyrenes / Q000737:chemistry*; D012996:Solutions / Q000737:chemistry; D013499:Surface Properties; D017155:Wettability
chemical_list: D011137:Polystyrenes; D012996:Solutions; D052203:Ferrosoferric Oxide