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We performed micromagnetic simulations regarding the detection of magnetic microbeads using a planar Hall effect sensor. The interactions between the magnetic particles and the sensor have been considered in order to simulate the behaviour of these systems. Our results show a high dependence of the sensor response on magnetic beads position. In order to have a linear response, a setup for magnetic...
In this work we present a study of the interaction between the magnetic particles used in biological applications and the GMR sensor. The fractional change in resistance, and hence the sensitivity, will be maximized by matching, as far as possible, the size of the sensor to the size of the beads and by carefully positioning the beads over the sensor. We found, by micromagnetic simulations, that the...
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