title: GHz properties of magnetophoretically aligned iron-oxide nanoparticle doped polymers.
abstract: We show that assembled domains of magnetic iron-oxide nanoparticles (IONPs) are effective at increasing the dielectric permittivity of polydimethylsiloxane (PDMS) nanocomposites in the GHz frequency range. The assembly has been achieved by means of magnetophoretic transport and its efficacy, as well as the electromagnetic properties of the nanocomposite, has been found to depend on IONPs diameter. Remarkably, the dielectric permittivity increase has been obtained by keeping dielectric and magnetic losses very low, making us envision the suitability of nanocomposites based on aligned IONPs as substrates for radiofrequency applications.
authors.affiliation: Center for Biomolecular Nanotechnologies@UniLe, Istituto Italiano di Tecnologia, 73010 Arnesano (LE), Italy. ferruccio.pisanello@iit.it
authors.forename: Ferruccio
authors.initials: F
authors.lastname: Pisanello
authors.forename: Rosa
authors.initials: R
authors.lastname: De Paolis
authors.forename: Daniela
authors.initials: D
authors.lastname: Lorenzo
authors.forename: Pablo
authors.initials: P
authors.lastname: Guardia
authors.forename: Simone
authors.initials: S
authors.lastname: Nitti
authors.forename: Giuseppina
authors.initials: G
authors.lastname: Monti
authors.forename: Despina
authors.initials: D
authors.lastname: Fragouli
authors.forename: Athanassia
authors.initials: A
authors.lastname: Athanassiou
authors.forename: Luciano
authors.initials: L
authors.lastname: Tarricone
authors.forename: Liberato
authors.initials: L
authors.lastname: Manna
authors.forename: Massimo
authors.initials: M
authors.lastname: De Vittorio
authors.forename: Luigi
authors.initials: L
authors.lastname: Martiradonna
mesh_terms: D005290:Ferric Compounds / Q000737:chemistry*; D053761:Nanocomposites / Q000737:chemistry; D053758:Nanoparticles / Q000737:chemistry*; D036103:Nanotechnology / Q000295:instrumentation*; D010316:Particle Size; D011108:Polymers / Q000737:chemistry*
chemical_list: D005290:Ferric Compounds; D011108:Polymers; C000499:ferric oxide