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Updated: May 23, 2026

Frequency Mixing Magnetic Detection Scanner for Imaging Magnetic Particles in Planar Samples
Published on: June 9, 2016
Non-linear magnetic behavior around zero field of an assembly of superparamagnetic nanoparticles
Caroline de Montferrand1, Yoann Lalatonne, Dominique Bonnin
1CSPBAT laboratory, UMR 7244 CNRS, University of Paris 13, France.
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.
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