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Controlling a Magnetic Force Microscope to Track a Magnetized Nanosize Particle

In this paper, we introduce a scheme for tracking a magnetic nanoparticle moving in three dimensions using a magnetic force microscope (MFM). The stray magnetic field of the magnetic particle induces a shift in the phase of oscillation of the tip of the MFM. We present a nonlinear feedback control l...

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Bibliographic Details
Published in:IEEE transactions on nanotechnology 2010-05, Vol.9 (3), p.367-374
Main Authors: Baronov, Dimitar, Andersson, Sean B
Format: Article
Language:English
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Summary:In this paper, we introduce a scheme for tracking a magnetic nanoparticle moving in three dimensions using a magnetic force microscope (MFM). The stray magnetic field of the magnetic particle induces a shift in the phase of oscillation of the tip of the MFM. We present a nonlinear feedback control law that translates the measurement of this phase shift into a trajectory for the tip of the MFM and prove that this trajectory converges to a neighborhood of the magnetic particle. The viability of the proposed tracking scheme is verified through numerical simulations of the tracking algorithm.
ISSN:1536-125X
1941-0085
DOI:10.1109/TNANO.2009.2029982