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Controlling a magnetic force microscope to track a magnetized nanosize particle
 

Summary: 1
Controlling a magnetic force microscope to track a magnetized
nanosize particle
Dimitar Baronov and Sean B. Andersson
Abstract--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 which 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.
Index Terms--Nanotechnology, magnetic force microscopy
(MFM), nonlinear systems, particle tracking
I. INTRODUCTION
Magnetic nanoparticles are commonly used to label bio-
logical molecules. Motivated by this ability, we introduce a
feedback control law which steers the tip of a magnetic force

  

Source: Andersson, Sean B. - Department of Aerospace and Mechanical Engineering, Boston University

 

Collections: Engineering