Trajectory analysis of single magnetic bead under elliptical cylindrical magnet and rotating field

IF 2.5 3区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Magnetism and Magnetic Materials Pub Date : 2025-03-01 DOI:10.1016/j.jmmm.2025.172934

Ruohan Li , Jiajia Sun , Zongqian Shi , Ruixuan Zhao , Xiaofeng Liu , Shumin Xin , Nan Wang , Xinxiao Shui , Wanyi Du , Kai Wu

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引用次数: 0

Abstract

This paper proposes an analytical method based on the equivalent magnetic charge approach to accurately analyze the magnetic field and force under an elliptical cylindrical magnet and a rotating field. This method minimizes the impact of mesh size on accuracy, improving computational efficiency. Moreover, a Lagrangian-Eulerian model is proposed to predict the magnetic bead trajectory under an elliptical cylindrical magnet combined with a rotating magnetic field, taking into account the coupling between the magnetic beads and the fluid. The influence of magnet geometry and rotating field frequency on the translational and rotational trajectory of a single magnetic bead is investigated. This work demonstrates the feasibility of using the Lagrangian-Eulerian model to analyze magnetic bead trajectories under specific soft-magnetic element geometries, providing a robust theoretical foundation for optimizing the design of the magnetophoretic circuits and enhancing control over the motion of single magnetic beads and bead-labeled cells in magnetophoretic circuits.

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来源期刊

Journal of Magnetism and Magnetic Materials 物理-材料科学：综合

CiteScore

5.30

自引率

11.10%

发文量

1149

审稿时长

59 days

期刊介绍： The Journal of Magnetism and Magnetic Materials provides an important forum for the disclosure and discussion of original contributions covering the whole spectrum of topics, from basic magnetism to the technology and applications of magnetic materials. The journal encourages greater interaction between the basic and applied sub-disciplines of magnetism with comprehensive review articles, in addition to full-length contributions. In addition, other categories of contributions are welcome, including Critical Focused issues, Current Perspectives and Outreach to the General Public. Main Categories: Full-length articles: Technically original research documents that report results of value to the communities that comprise the journal audience. The link between chemical, structural and microstructural properties on the one hand and magnetic properties on the other hand are encouraged. In addition to general topics covering all areas of magnetism and magnetic materials, the full-length articles also include three sub-sections, focusing on Nanomagnetism, Spintronics and Applications. The sub-section on Nanomagnetism contains articles on magnetic nanoparticles, nanowires, thin films, 2D materials and other nanoscale magnetic materials and their applications. The sub-section on Spintronics contains articles on magnetoresistance, magnetoimpedance, magneto-optical phenomena, Micro-Electro-Mechanical Systems (MEMS), and other topics related to spin current control and magneto-transport phenomena. The sub-section on Applications display papers that focus on applications of magnetic materials. The applications need to show a connection to magnetism. Review articles: Review articles organize, clarify, and summarize existing major works in the areas covered by the Journal and provide comprehensive citations to the full spectrum of relevant literature.