title: Nano Superconducting QUantum Interference Device sensors for magnetic nanoparticle detection.
abstract: In this paper, Superconducting QUantum Interference Devices (SQUIDs) based on single layer Nb nanobridge Josephson junctions are described. Devices, with loop area ranging from 4 to 0.5 microm2, have been patterned by Electron Beam Lithography (EBL) in a 20 nm thick Nb layer, achieving a responsivity of about 30 microA/phi0. Magnetization measurements have been performed via switching current measurements at a temperature T = 4.2 K. Preliminary detection of Silica-magnetite (Fe3O4-SiO2) core/shell nanoparticle cluster has been proven.
authors.affiliation: ICIB-CNR, via Campi Flegrei 34, 80078 Pozzuoli, Napoli, Italy.
authors.forename: E
authors.initials: E
authors.lastname: Esposito
authors.forename: C
authors.initials: C
authors.lastname: Granata
authors.forename: A
authors.initials: A
authors.lastname: Vettoliere
authors.forename: R
authors.initials: R
authors.lastname: Russo
authors.forename: D
authors.initials: D
authors.lastname: Peddis
authors.forename: M
authors.initials: M
authors.lastname: Russo