Figure 2.

Multiphysics simulation results. a) Magnetic module 2D representation in COMSOL Multiphysics environment; b) zoomed view of a portion of the magnetic module in which the internal and the external series of permanent magnets are reported; c–e) Fluidic velocity, magnetic field, and particle trajectories in the proposed magnetic module; f) FEM simulations results in terms of capture efficiency when considering a single magnet, placed either centrally or externally, and 500 nm nominal diameter nanoparticles; magnetic capture efficiency when varying magnet number g), grouping h) or caught nanoparticle diameter i). The selected configuration is the number 3 in h).