Antimagnets: controlling magnetic fields with superconductor–metamaterial hybrids

Sanchez, Alvaro, Navau, Carles, Prat-Camps, Jordi and Chen, Du-Xing (2011) Antimagnets: controlling magnetic fields with superconductor–metamaterial hybrids. New Journal of Physics, 13. 093034. ISSN 1367-2630

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Magnetism is very important in various areas of science and technology, ranging from magnetic recording through energy generation to trapping cold atoms. Physicists have managed to master magnetism—to create and manipulate magnetic fields—almost at will. Surprisingly, there is at least one property that has been elusive until now: how to 'switch off' the magnetic interaction of a magnetic material with existing magnetic fields without modifying them. Here we introduce the antimagnet, a design that conceals the magnetic response of a given volume from its exterior, without altering the external magnetic fields, in some respects analogous to recent theoretical proposals for cloaking electromagnetic waves with metamaterials. However, unlike these devices, which require extreme material properties, our device is feasible and needs only two kinds of available materials: superconductors and isotropic magnetic materials. Antimagnets may have applications in magnetic-based medical techniques such as magnetic resonance imaging or in reducing the magnetic signature of vessels or planes.

Item Type: Article
Schools and Departments: School of Engineering and Informatics > Informatics
Subjects: Q Science > QC Physics > QC0501 Electricity and magnetism > QC0750 Magnetism
Depositing User: Jordi Prat Camps
Date Deposited: 23 Apr 2018 14:59
Last Modified: 02 Jul 2019 16:01

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