Broadband absorption of monolayer MoS2 in visible region using a tetramerized nanorod metasurface. (31st December 2021)

• Record Type: Journal Article
• Authors: Pei, Yao; Sang, Tian; Mi, Qing; Wang, Jicheng; Wang, Yueke
• Is Part Of: Journal of optics. Volume 24:Number 2(2022)
• Publication Date: 2021-12-31
• Subjects: monolayer MoS2 -- tetramerized nanorod metasurface -- magnetic resonance -- broadband absorption; Optics -- Periodicals; 535.05
• DOI: 10.1088/2040-8986/ac41b9
• Languages: English
• ISSNs: 2040-8978

Abstract

Abstract: High-efficient broadband absorption of the monolayer MoS2 is achieved by using a tetramerized nanorod metasurface (TNM), and the average absorption of 64.5% for the monolayer MoS2 can be obtained in the visible range of 400–750 nm. The unit cell of the TNM consists four Ag nanorods with different diameters, the incident light can be selectively absorbed by the monolayer MoS2 due to the magnetic resonance associated with the individual Ag nanorod, and broadband absorption of the monolayer MoS2 is realizable due to the cooperative magnetic resonances related to the tetramerized Ag nanorods. In addition, the absorption of the monolayer MoS2 is robust to the variation of the structural parameters, and it exhibits wide-angle and polarization-independent features.