Dynamic sensing of magnetic nanoparticles in microchannel using GMI technology

Kamel Fodil (1) , Matthieu Denoual (1) , Christophe Dolabdjian (1) , M. Harnois (2) , V. Senez (2)

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

This paper presents the detection of magnetic nanoparticles flowing into a microchannel using giant magnetic impedance (GMI) microwire sensor made up of CoFeSiBNb alloy (40 diameter and 1 cm long wire). Detection tests were performed using UltraSmall Particles of Iron Oxyde (USPIO) with diameter of 20 nm. Detection of volume of 180 nl with a concentration of 18 mmol (Fe)/l and flow rate of 260 nl/s was performed. Such type of measurement can find application in biomedical and clinical diagnosis for in vivo noninvasive detection.

Mots clés: microchannel fluidic; magnetic nanoparticles; Giant magnetoimpedance microwire (GMI)

Domaines: Electromagnétisme

Kamel Fodil, Matthieu Denoual, Christophe Dolabdjian, M. Harnois, V. Senez. Dynamic sensing of magnetic nanoparticles in microchannel using GMI technology. IEEE Transactions on Magnetics, 2013, pp.49(1), 124-127. ⟨hal-00980710⟩