太赫兹辐射
悬臂梁
材料科学
超材料
光电子学
执行机构
微电子机械系统
透射率
传输(电信)
控制重构
光学
梁(结构)
物理
电气工程
电信
计算机科学
复合材料
嵌入式系统
工程类
作者
Ying Huang,Taiyu Okatani,Naoki Inomata,Yoshiaki Kanamori
摘要
We experimentally demonstrate a microelectromechanically reconfigurable ladder-shaped metamaterial (LS-MM) operating in a terahertz (THz) range. Ultrasmall cantilever actuators with a beam length of 14 μm are employed to independently reshape each unit cell of the LS-MM, correspondingly switching the transmission response of THz waves. The microelectromechanically driven LS-MM achieves a tuning contrast of 60.1% in transmittance at 0.78 THz and a 0.9-rad delay in the transmission phase shift at 1.35 THz through the off-to-on reconfiguration. In particular, the cantilever actuator has a high mechanical resonant frequency of 585 kHz owing to its small size. The microelectromechanically driven LS-MM advantageously offers a pathway for applications requiring fast tunable transmission modulations, such as high-resolution THz imaging and wireless communications.
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