256-channel magnetic imaging system

Rev Sci Instrum. 2008 Jan;79(1):013709. doi: 10.1063/1.2829883.


We present the design and fabrication of a magnetoresistive imaging system capable of scanning 256 channels simultaneously along linear ranges of either 4 or 13 mm. High speed electronics read the channels and transfer the data to a computer that builds and displays the images. The system was successfully used to image magnetic tapes for real-time forensic validation purposes and can also be applied in other noninvasive imaging applications.

MeSH terms

  • Equipment Design
  • Equipment Failure Analysis
  • Image Enhancement / instrumentation*
  • Image Enhancement / methods
  • Image Interpretation, Computer-Assisted / instrumentation*
  • Image Interpretation, Computer-Assisted / methods
  • Magnetics / instrumentation*
  • Reproducibility of Results
  • Sensitivity and Specificity
  • Signal Processing, Computer-Assisted*
  • Transducers*
  • Video Recording / instrumentation*
  • Video Recording / methods