title: Dynamical formation of spatially localized arrays of aligned nanowires in plastic films with magnetic anisotropy.
abstract: We present a simple technique for magnetic-field-induced formation, assembling, and positioning of magnetic nanowires in a polymer film. Starting from a polymer/iron oxide nanoparticle casted solution that is allowed to dry along with the application of a weak magnetic field, nanocomposite films incorporating aligned nanocrystal-built nanowire arrays are obtained. The control of the dimensions of the nanowires and of their localization across the polymer matrix is achieved by varying the duration of the applied magnetic field, in combination with the evaporation dynamics. These multifunctional anisotropic free-standing nanocomposite films, which demonstrate high magnetic anisotropy, can be used in a wide field of technological applications, ranging from sensors to microfluidics and magnetic devices.
authors.affiliation: Center for Bio-Molecular Nanotechnologies (CBN) of IIT@NNL-UniLe-Lecce, via Barsanti c/o STAMMS, Arnesano 73010 Lecce, Italy. despina.fragouli@unile.it
authors.forename: Despina
authors.initials: D
authors.lastname: Fragouli
authors.forename: Raffaella
authors.initials: R
authors.lastname: Buonsanti
authors.forename: Giovanni
authors.initials: G
authors.lastname: Bertoni
authors.forename: Claudio
authors.initials: C
authors.lastname: Sangregorio
authors.forename: Claudia
authors.initials: C
authors.lastname: Innocenti
authors.forename: Andrea
authors.initials: A
authors.lastname: Falqui
authors.forename: Dante
authors.initials: D
authors.lastname: Gatteschi
authors.forename: Pantaleo Davide
authors.initials: PD
authors.lastname: Cozzoli
authors.forename: Athanassia
authors.initials: A
authors.lastname: Athanassiou
authors.forename: Roberto
authors.initials: R
authors.lastname: Cingolani
mesh_terms: D016880:Anisotropy; D008280:Magnetics; D046529:Microscopy, Electron, Transmission; D053770:Nanowires / Q000737:chemistry*; D010969:Plastics / Q000737:chemistry*; D012997:Solvents / Q000737:chemistry; D014783:Viscosity; D014835:Volatilization
chemical_list: D010969:Plastics; D012997:Solvents