Tailoring Magnetic Fields in Inaccessible Regions
Tailoring Magnetic Fields in Inaccessible Regions
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DOI：
10.1103/physrevlett.125.177204
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发表时间：
2020-10-23
影响因子：
8.6
通讯作者：
Prat-Camps, Jordi
中科院分区：
文献类型：
--
作者：
Mach-Batlle, Rosa;Bason, Mark G.;Prat-Camps, Jordi
控制磁性，对于广泛的技术至关重要，由于不可能在自由空间中产生最大磁场而受到损害。在这里，我们提出了一种基于负渗透率的策略来克服这种严格的限制。我们的实验表明，一个积极的磁性超材料可以模仿在一定距离的直电流线的字段。我们的策略导致了真空中磁场的前所未有的聚焦，并能够远程取消磁源，为操纵难以到达的区域的磁场开辟了一条途径。
Controlling magnetism, essential for a wide range of technologies, is impaired by the impossibility of generating a maximum of magnetic field in free space. Here, we propose a strategy based on negative permeability to overcome this stringent limitation. We experimentally demonstrate that an active magnetic metamaterial can emulate the field of a straight current wire at a distance. Our strategy leads to an unprecedented focusing of magnetic fields in empty space and enables the remote cancellation of magnetic sources, opening an avenue for manipulating magnetic fields in inaccessible regions.