Simultaneous, single particle, magnetization and size measurements of micron sized, magnetic particles

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

卷:324

Article

Xu, Jie¹  Mahajan, Kalpesh¹  Xue, Wei¹  Winter, Jessica O.¹  Zborowski, Maciej²  Chalmers, Jeffrey J.¹ 

[1] Ohio State Univ, William G Lowrie Dept Chem & Biomol Engn, Columbus, OH 43210 USA

[2] Cleveland Clin, Dept Biomed Engn, Cleveland, OH 44195 USA

关键词: Magnetophoretic mobility;    Particle settling velocity;    Particle magnetic velocity;    Cell tracking velocimetry;    Magnetization;   

DOI  :  10.1016/j.jmmm.2012.07.039

来源: Elsevier

【 摘 要 】

Single particle magnetization and size measurements of micron and nano sized, magnetic particles were made using a previously described device referred to as Cell Tracking Velocimetry (CTV). Three types of commercially available, and commonly used, magnetic particles were studied in this report. While the CTV instrument provides individual particles measurements, the average magnetization and size measurements were found to have reasonable agreements with reported values from instruments which measure bulk values. In addition, the CTV instrument, using electromagnets, can also determine magnetization curves, which also proved to have reasonable agreement with other published studies. Given that magnetic separation and analysis technology is dependent on the quality of the magnetic particles used, studies such as this one using CTV provide not only average data, but also provides information with respect to the distribution of the properties such as magnetization and size. For example, the spread of the data in magnetic and settling velocities were found to be predominately due to the size distribution of the analyzed particles. (c) 2012 Elsevier B.V. All rights reserved.

【 授权许可】

Free