An improved method for estimating core size distributions of magnetic nanoparticles via magnetization harmonics

Yi Sun, Na Ye, Dandan Wang, Zhongzhou Du, Shi Bai, Takashi Yoshida

研究成果: Contribution to journalArticle査読

抄録

The core size distribution is an important physical characteristic of magnetic nanoparticles (MNPs) because it seriously affects biomedical and biological applications. In this study, we proposed an improved method for estimating the distributions, which optimizes the excitation frequency based on AC susceptibility to avoid the effects of Brownian relaxation. Moreover, the first, third, and fifth magnetization harmonics under different excitation field strengths are used for estimating core size distributions to avoid measuring higher harmonics. The experiment results show that the improved AC harmonic method can accurately and quickly estimate the distribution of large core sizes compared with the method of static magnetization (M–H) curves, which is a competitive advantage in MNP immunoassays.

本文言語英語
論文番号1623
ページ(範囲)1-12
ページ数12
ジャーナルNanomaterials
10
9
DOI
出版ステータス出版済み - 9 2020

All Science Journal Classification (ASJC) codes

  • 化学工学(全般)
  • 材料科学(全般)

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