Open static magnetic cloak based on DC magnetic metamaterials

IF 3 3区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Journal of Magnetism and Magnetic Materials Pub Date : 2025-02-16 DOI:10.1016/j.jmmm.2025.172885

Yangrong Chen , Hanchuan Chen , Fei Sun , Yichao Liu , Xiaoxiao Wu , Haitao Li , Zhixing Zhang , Qianhan Sun

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Abstract

Due to the significant applications of static magnetic field invisibility in avoiding metal detector detection, it has received extensive attention in recent years. However, most existing methods (e.g., multilayer closed structures based on DC magnetic metamaterials) achieve closed invisibility, hindering the exchange of information and materials between the cloak’s interior and the external environment. In this study, a DC magnetic field shifter is designed based on transformation magnetostatics and then combined with a specially designed closed DC magnetic cloak with a hole to develop an open static magnetic cloak. Numerical simulations verify the invisibility effect and multi-directional effectiveness of this open cloak. Finally, effective medium theory is utilized to achieve the open static magnetic field cloak by arranging isotropic media specifically, whose effectiveness is validated through numerical simulations.

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基于直流磁性超材料的开放式静电磁斗篷

由于静磁场隐身技术在躲避金属探测器探测中的重要应用，近年来受到了广泛的关注。然而，大多数现有的方法（如基于直流磁性超材料的多层封闭结构）实现了封闭隐身，阻碍了斗篷内部与外部环境之间的信息和材料交换。本研究基于变换静磁学原理设计直流磁场移位器，并与专门设计的带孔的封闭式直流磁斗篷结合，形成开放式静态磁斗篷。数值仿真验证了该敞开式隐身衣的隐身效果和多向有效性。最后，利用有效介质理论，通过对各向同性介质的特殊布置，实现了开放式静磁场隐身，并通过数值模拟验证了其有效性。

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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.