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On the role of size differences in synchronized motion of magnetic particles in fluid: A study on Trimers
IEEE Transactions on Magnetics ( IF 2.1 ) Pub Date : 2020-04-01 , DOI: 10.1109/tmag.2020.2966598
Sijie Ran , Dmitri Vainchtein , Gary Friedman

Synchronized motion and pattern formation of magnetic particle aggregates in variable magnetic field is of growing interest from the point of view of both fundamental science and its applications. In this article, the role of size differences in synchronized motion of magnetic particles under external rotating magnetic field at low Reynolds number flow regimes is considered. Several different motion regimes are observed in simulations as a function of particle size differences and field rotation rate. Simulation indicates phase-like transitions between different motion regimes when particle size differences become significant. It is also shown that particle size differences permit the possibility of locomotion for particle aggregates which cannot be observed for uniform particle sizes.

中文翻译:

大小差异对流体中磁性粒子同步运动的影响:三聚体研究

从基础科学及其应用的角度来看,可变磁场中磁性粒子聚集体的同步运动和模式形成越来越受到关注。在本文中,考虑了尺寸差异在低雷诺数流态下外部旋转磁场下磁性粒子同步运动中的作用。在模拟中观察到几种不同的运动状态,作为颗粒大小差异和场旋转速率的函数。当粒度差异变得显着时,模拟表明不同运动状态之间的类似相转变。还表明,粒径差异允许颗粒聚集体运动的可能性,而对于均匀粒径则无法观察到这种运动。
更新日期:2020-04-01
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