Micro-Hall position sensing of magnetic nanowires

  • Mihajlović G
  • Hoffmann A
  • Von Molnár S
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Abstract

The Hall voltage output of a micro-Hall magnetic sensor depends on the relative position of a magnetic nanowire with respect to its sensing area. Following this idea, we performed analytical calculations which show that, under certain conditions, these devices can track the position of a magnetic nanowire with subnanometer resolution. Our results suggest that micro-Hall sensors can be utilized to provide a direct electronic readout of the position of magnetic nanowires in their applications as biomolecular manipulators or dynamic components in micro-and nanoscale devices. (C) 2009 American Institute of Physics. [doi:10.1063/1.3245334]

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Authors

  • G. Mihajlović

  • A. Hoffmann

  • S. Von Molnár

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