Switchable absorbing, reflecting, and transmitting metasurface by employing vanadium dioxide on the same frequency. (February 2022)

• Record Type: Journal Article
• Authors: Liu, Yunpeng; Dong, Lin; Zheng, Jiangshan; Mohd Sabri, Mohd Faizul; Majid, Nazia Abdul; Ibrahim, Suriani
• Is Part Of: Superlattices and microstructures. Volume 162(2022)
• Publication Date: 2022-02
• Subjects: Vanadium dioxide -- Switchable metasurface -- Terahertz -- Absorber; Superlattices as materials -- Periodicals; Microstructure -- Periodicals; Semiconductors -- Periodicals; Superréseaux -- Périodiques; Microstructure (Physique) -- Périodiques; Semiconducteurs -- Périodiques; 621.38152
• DOI: 10.1016/j.spmi.2021.107109
• Languages: English
• ISSNs: 0749-6036

Abstract

Abstract: In this work, we proposed a switchable metasurface based on phase transmission material of vanadium dioxide (VO2 ) with metal and insulation mode. Simulation results demonstrated that the metasurface can switch perfectly at frequencies of 1.89 THz and 2.67 THz from two perfect absorbing peaks to a reflecting peak and a transmitting peak. When VO2 serves as metal mode, there were two absorption peaks of 99.93% and 99.92% respectively. When VO2 serves as insulation mode, the reflection and transmission magnitudes were 92.50% and 90.50% respectively. Simultaneously, the structure was insensitive to the incident angle from the simulation result. The proposed metasurface could therefore provide potential application prospects for the terahertz band switcher or sensor. Highlights: The proposed metasurface can switch at two frequency bands from the perfect absorber to transmitter and reflector. The structure of a gold ring with a crack can generate a wide transmission frequency band. The proposed metasurface can quickly respond and switch between two modes. The proposed metasurface has insensitivity of incidence angle and cross-polarization.