Magnetically tunable metamaterial perfect absorber
Magnetically tunable metamaterial perfect absorber
复制标题
磁可调超材料完美吸收体
DOI：
10.1063/1.4954224
复制
发表时间：
2016-06-28
影响因子：
3.2
通讯作者：
Bi, Ke
中科院分区：
文献类型：
--
作者：
Lei, Ming;Feng, Ningyue;Bi, Ke
对一种基于铁磁共振的磁调谐超材料理想吸收体进行了实验研究和数值模拟。基于铁氧体的MPA由铁氧体棒阵列和金属接地层组成。讨论了铁氧体基MPA在一系列外加磁场作用下的频率吸收特性。在一定的磁场作用下，在8-12 GHz范围内出现铁磁共振吸收峰。模拟和实验结果都表明，铁氧体基MPA的吸收频率可以通过外加磁场进行调谐。该工作为磁调谐超材料理想吸收体的制备提供了一种有效的方法。
A magnetically tunable metamaterial perfect absorber (MPA) based on ferromagnetic resonance is experimentally and numerically demonstrated. The ferrite-based MPA is composed of an array of ferrite rods and a metallic ground plane. Frequency dependent absorption of the ferrite-based MPA under a series of applied magnetic fields is discussed. An absorption peak induced by ferromagnetic resonance appears in the range of 8–12 GHz under a certain magnetic field. Both the simulated and experimental results demonstrate that the absorption frequency of the ferrite-based MPA can be tuned by the applied magnetic field. This work provides an effective way to fabricate the magnetically tunable metamaterial perfect absorber.