Work

Electrothermally tunable terahertz cross-shaped metamaterial for opto-logic operation characteristics

Year: 2022

Type: article

Abstract: 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.

Source: iScience

DOI: 10.1016/j.isci.2022.104072

Authors: Ruijia Xu, Xiaocan Xu, Yu-Sheng Lin

Institution: Sun Yat-sen University

Language: English

Topic: Metamaterials and Metasurfaces Applications

Subfield: Electronic, Optical and Magnetic Materials

Field: Materials Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $3,000

Funders: National Natural Science Foundation of China, Sun Yat-sen University, National Key Research and Development Program of China