Xu Ruijia, Xu Xiaocan, Lin Yu-Sheng
School of Electronics and Information Technology, Sun Yat-Sen University, Guangzhou 510006, China.
iScience. 2022 Mar 14;25(4):104072. doi: 10.1016/j.isci.2022.104072. eCollection 2022 Apr 15.
We propose and demonstrate a metamaterial design by integrating a microelectromechanical system (MEMS) electrothermal actuator (ETA) platform and a cross-shaped metamaterial (CSM) to perform opto-logic function characteristics. Reconfigurable and stretchable mechanisms of CSM are achieved by driving different DC bias voltages on ETA to improve the limitations induced by the conventional use of the flexible substrate. The optical responses of CSM are tunable by the electrical signals inputs. By driving a DC bias voltage of 0.20 V, a tuning range of CSM is 0.54 THz is obtained and it and provides perfect zero-transmission characteristics. In addition, the "XNOR" logic gate function of CSM is realized at 1.20 THz, which plays a key role in the all opto-logic network communication system. The proposed MEMS-based CSM exhibits potential applications in logical operation, signal modulation, optical switching, THz imaging, and so on.
我们提出并展示了一种超材料设计，该设计通过集成微机电系统（MEMS）电热致动器（ETA）平台和十字形超材料（CSM）来实现光逻辑功能特性。通过在ETA上驱动不同的直流偏置电压，实现了CSM的可重构和可拉伸机制，以改善传统使用柔性基板所带来的局限性。CSM的光学响应可通过电信号输入进行调谐。通过驱动0.20 V的直流偏置电压，获得了CSM的调谐范围为0.54 THz，并且它提供了完美的零传输特性。此外，CSM的“异或非”逻辑门功能在1.20 THz时实现，这在全光逻辑网络通信系统中起着关键作用。所提出的基于MEMS的CSM在逻辑运算、信号调制、光开关、太赫兹成像等方面展现出潜在的应用。
