Distributive Activation Volumes of Magnetically Interacting Nanostructures
Distributive Activation Volumes of Magnetically Interacting Nanostructures
复制标题
磁相互作用纳米结构的分布激活体积
DOI：
10.1021/acs.jpcc.9b05584
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Kitamoto Yoshitaka
中科院分区：
文献类型：
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作者：
Trisnanto Suko Bagus;Kitamoto Yoshitaka
尺寸均匀性是决定磁性纳米结构的有效室温磁性的一个关键因素，也是其在生物医学中应用的一个关键问题。使用场调制动态磁强计，我们研究了磁性纳米结构的特征尺寸分布经验提取的光谱磁化响应为一个给定的频带。这种光谱方法使我们能够估计除了弛豫时间外，在其分布激活体积内振荡的磁动力矩。我们实际上扩展这种方法来评估胶体分散性统计的磁性纳米棒从初级到次级的体积比。
Size homogeneity is a critical factor in defining the effective room temperature magnetism of magnetic nanostructures yet a crucial issue toward their implementation in biomedics. Using field-modulated dynamic magnetometry, we studied characteristic size distributions of magnetic nanostructures empirically extracted from their spectral magnetization responses for a given frequency band. This spectroscopic method allows us to estimate magnetodynamic moments oscillating within their distributive activation volumes in addition to the relaxation times. We practically extend this approach to evaluate colloidal dispersity statistics of magnetic nanorods from the primary-to-secondary volume ratio.