Structure reconfigurable metamaterial for terahertz wave control

Structure reconfigurable metamaterial for terahertz wave control
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用于太赫兹波控制的结构可重构超材料

DOI:
10.1080/10584587.2019.1592068
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发表时间:
2019-03
影响因子:
0.7
通讯作者:
Xunjun He
Xunjun He
中科院分区:
工程技术4区
文献类型:
--
作者:
Ling Tian;Yuan Yao;Jiangtao Han;Lei Zhu;Fengmin Wu;Xunjun He

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摘要近年来,可调谐太赫兹超材料的调谐范围和活性材料的选择限制了其在可调谐太赫兹器件中的广泛应用。本文报道了一种面内可重构太赫兹超材料,它由一对T型结构组成。一个是固定到基板上,而另一个是图案化的可移动的框架,通过微机械致动器致动。通过调节T形之间的距离,太赫兹超材料表现出高达43%的大调谐范围。此外,太赫兹超材料还可以实现偏振相关和偏振无关状态之间的切换。因此,所提出的太赫兹超材料在设计可调谐太赫兹器件方面具有潜在的应用前景。
Abstract In recent years, the limited tuning ranges and selections of active materials in tunable terahertz metamaterials severely restrict their wide applications in tunable terahertz devices. In this paper, we reported an in-plane reconfigurable terahertz metamaterial which consists of a couple of T-shape structures. One is fixed to the substrate while the other is patterned on a movable frame actuated though a micromachined actuator. By adjusting the distance between T-shapes, the terahertz metamaterial exhibits a large tuning range up to 43%. In addition, the terahertz metamaterial can also realize switching between the polarization dependent and polarization independent state. Therefore, the proposed terahertz metamaterial shows potential applications in designing tunable terahertz devices.
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