Voltage tunable short wire-pair type of metamaterial infiltrated by nematic liquid crystal
Voltage tunable short wire-pair type of metamaterial infiltrated by nematic liquid crystal
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DOI：
10.1063/1.3496034
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发表时间：
2010-09
影响因子：
4
通讯作者：
Fuli Zhang;Qian Zhao;Weihong Zhang;Jingbo Sun;Ji Zhou;D. Lippens
中科院分区：
文献类型：
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作者：
Fuli Zhang;Qian Zhao;Weihong Zhang;Jingbo Sun;Ji Zhou;D. Lippens
在这封信中，我们报告了一个在微波频率下具有负磁导率的电压可调短线对超材料的实验演示。通过对短导线对进行液晶渗透，可以在较低的静电场作用下实现对短导线对磁共振的有效调谐。结果表明，当偏压从0增加到100 V时，磁共振频率从9.91 GHz连续可逆地下移到9.55 GHz。此外，对于磁共振周围的工作频率，超材料的有效磁导率从负值变化到正值。数值分析与实验结果吻合较好。
In this letter, we report an experimental demonstration on voltage tunable short wire-pair metamaterial with negative permeability at microwave frequencies. After infiltrated by nematic liquid crystal, magnetic resonance of short wire-pair can be effectively tuned via relatively low static electric field. The results show, by increasing bias voltage from 0 to 100 V, magnetic resonance is continuously and reversibly shifted from 9.91 down to 9.55 GHz. Moreover, the effective permeability of metamaterial, for operation frequency around magnetic resonance, varies from negative to positive values. Numerical analysis has a good agreement with experimental results.