Detection of a countable number of magnetic particles for biological applications using a hall device

Y. Kim, S. Joo, W. Lee, J. Hong, S. K. Hong, K. H. Kim, S. U. Kim, K. Rhie, S. Lee, Y. Chung, K. Shin

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

We fabricated a magnetic field sensor made of an InAs quantum-well. Various numbers of magnetic particles were located on the sensor and the stray field generated by the magnetic particles was detected using micro-Hall magnetometry at room temperature. A numerical calculation carried out for this device successfully explained the experimental results and a useful equation relating the signal of the device and the number of particles was deduced.

Original languageEnglish
Pages (from-to)513-516
Number of pages4
JournalJournal of the Korean Physical Society
Volume52
Issue number2
DOIs
Publication statusPublished - 2008 Feb

Keywords

  • Biosensor
  • Gradiometry
  • Magnetic particle

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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