Simulation and experimental results on manipulation and detection of magnetic nanoparticles using planar hall effect sensors

This paper describes, based on a micromagnetic approach and experimental measurements, our advances in the handling and detection of magnetic nanoparticles used for biodetection in lab-on-a-chip devices. Structures made from nonmagnetic and magnetic materials are considered in this study and results that highlight the importance of the material nature and specific interaction between the beads and the sensor´s structure are presented. The results are useful for the layout design of micrometric sized magnetic sensors.