Model calculation of the magnetic induction generated by magnetic nanoparticles flowing into a microfluidic system. Performance analysis of the detection

Kamel Fodil (1) , Matthieu Denoual (1) , Christophe Dolabdjian (1) , A. Treizebre (2) , Vincent Senez (2)

1 Equipe Electronique - Laboratoire GREYC - UMR6072
2 IEMN - Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520

This paper presents a mathematical model of the detection of the magnetic nanoparticles (MNPs) flowing into a microchannel. To validate the model, the experimental measurements were performed using a ferrofluid and a giant magneto impedance microwire made up of CoFeSiBNb alloy as a sensor. The good agreement between theory and measurement implies the possibility of using the numerical simulation to analyze the system performance for the MNPs detection. In addition, a model calculation was performed, which evaluates the optimal signal-to-noise ratio of the detection system as a function of its main parameters and according to the magnetic induction induced by the MNPs.

Mots clés: giant magneto impedance (GMI) microwire; magnetic nanoparticles; magnetic nanoparticles (MNPs); microchannel

Domaines: Electromagnétisme

Kamel Fodil, Matthieu Denoual, Christophe Dolabdjian, A. Treizebre, Vincent Senez. Model calculation of the magnetic induction generated by magnetic nanoparticles flowing into a microfluidic system. Performance analysis of the detection. IEEE Transactions on Magnetics, 2014, 50, pp.1-8. ⟨10.1109/TMAG.2013.2291546⟩. ⟨hal-00980048⟩