title: Non-linear magnetic behavior around zero field of an assembly of superparamagnetic nanoparticles.
abstract: The MIAplex® device is a miniaturized detector, devoted to the high sensitive detection of superparamagnetic nanoprobes for multiparametric immunoassays. It measures a signal corresponding to the second derivative of the magnetization around zero field. Like any new technology, the real success of the MIAplex® detector can only be exploited through a deep understanding of the magnetic signature. In this letter, we study the magnetic behavior around zero-field of diluted lab-made and commercial ferrofluids by comparing together conventional SQUID magnetization and MIAplex® signature.
authors.affiliation: CSPBAT laboratory, UMR 7244 CNRS, University of Paris 13, France.
authors.forename: Caroline
authors.initials: C
authors.lastname: de Montferrand
authors.forename: Yoann
authors.initials: Y
authors.lastname: Lalatonne
authors.forename: Dominique
authors.initials: D
authors.lastname: Bonnin
authors.forename: Laurence
authors.initials: L
authors.lastname: Motte
authors.forename: Philippe
authors.initials: P
authors.lastname: Monod
mesh_terms: D005290:Ferric Compounds / Q000737:chemistry; D007118:Immunoassay; D008280:Magnetics; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D008904:Miniaturization; D011506:Proteins / Q000032:analysis
chemical_list: D005290:Ferric Compounds; D011506:Proteins; C000499:ferric oxide