Fig. 1
Description of the microdevice. a Operation principle of the coaxial mixer. b ELISA analysis against CD63 and CA19-9 performed after exosome capture from whole blood. c Left: Image of setup. Right: The pipe is lifted from the magnets showing the NPs captured at the junctions between the alternate polarization magnets. d Simulation of the magnetic gradient created between each pair of NdFeB magnets. Nanoparticle accumulation coincides with the high intensity nodes. The tubing is represented with the solid and dashed blue lines
