Three-dimensional detection of magnetic nanoparticles using a field-free line with weak field gradient and multiple pickup coils

Shohei Hamanaga, Takashi Yoshida, Teruyoshi Sasayama, Ahmed L. Elrefai, Keiji Enpuku

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

We performed three-dimensional detection of magnetic nanoparticle (MNP) samples using the combination of a field-free line (FFL) and multiple pickup coils. In this method, two-dimensional maps of the signal fields generated by the MNP samples were used to reconstruct a three-dimensional image of the MNP concentration. In the experiment, a weak field gradient of the FFL (0.06-0.13 T m-1) was used. The degradation of the imaging quality owing to the weak field gradient was compensated using ten field maps. We successfully demonstrated the three-dimensional detection of two MNP samples. The Fe content of each sample was 10 and 20 μg and the spacing for both samples was 16 mm. The results confirm the effectiveness of the present method for MNP detection using a weak field gradient. We also quantitatively discuss how the imaging quality degrades when the field gradient is decreased.

Original languageEnglish
Article number061001
JournalJapanese journal of applied physics
Volume58
Issue number6
DOIs
Publication statusPublished - 2019

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

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