We propose a reconfigurable electromagnetic metamaterial device driven by magnetic fields. A field-driven reconfigurable metamaterial component (FD-RMC) consisting of periodic channels and compound liquid medium is fabricated. The transition of the electromagnetic metamaterial device from an absorbing state to a frequency-selective state is realized by placing the FD-RMC filled with a compound liquid medium in a gradient magnetic field. The effective bandwidth of the FD-RMC is 14.1GHz (3.9–18GHz) in the absorbing state, and it exhibits obvious filtering characteristics at 7.8GHz in the frequency-selective state. Repeated testing showed that the FD-RMC has great repeatable reconfigurability.

我们提出了一种由磁场驱动的可重构电磁超材料装置。制备了由周期性通道和复合液体介质组成的场驱动可重构超材料组件（FD-RMC）。电磁超材料装置从吸收状态到频率选择状态的转变是通过将填充有复合液体介质的FD-RMC放置在梯度磁场中来实现的。FD-RMC在吸收状态下的有效带宽为14.1GHz（3.9–18GHz），在频率选择状态下在7.8GHz处表现出明显的滤波特性。反复测试表明，FD-RMC具有很好的可重复性。