This paper reports on a microfluidic platform with an integrated spin valve giant magneto-resistance (GMR) sensor used for the detection and quantification of single magnetic micromarkers. A microfluidic channel containing the magnetic fluid, microconductors (MCs) for collection of the magnetic markers and a spin valve GMR sensor for detecting the presence of their magnetic stray field were integrated on a single chip. The results show that the sensor is capable of detecting a single magnetic marker with 2.8 μm diameter.
Georgios Kokkinis, Susana Cardoso, and Ioanna Giouroudi, "Microfluidic platform for detection and quantification of magnetic markers," Proc. SPIE 10247, Bio-MEMS and Medical Microdevices III, 1024705 (Presented at SPIE Microtechnologies: May 10, 2017; Published: 30 May 2017); https://doi.org/10.1117/12.2265639.
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