Multiple tunable six-peak graphene absorber for high-performance refractive index sensing
Southwest University of Science and Technology · Lanzhou University of Technology · +6 more institutions
Abstract
In the present study, a design of a novel metamaterial absorber is proposed. It consists of a gold substrate at the bottom, a dielectric layer filled with silica in the middle, and a top layer of specially patterned graphene as the covering. The absorber we designed has a straightforward structure, is convenient to fabricate, and has a period of 6.1 μm. As simulated by FDTD Solution, the absorber absorption peaks are located at 6.1328 THz, 10.7916 THz, 16.4188 THz, 20.8016 THz, 22.9118 THz, and 25.1303 THz. The absorptivity of the six absorption peaks were 95.82 %, 92.58 %, 96.31 %, 99.56 %, 93.67 %, and 99.62 %, respectively, and the average absorptivity reached 96.26 %. The absorber, additionally, shows…
Citation impact
- FWCI
- 18.43
- Percentile
- 100%
- References
- 81
Authors
7- SZSiwen Zhang
Southwest University of Science and Technology
- HYHua Yang
Lanzhou University of Technology
- CTChaojun Tang
Zhejiang University of Technology
- ZYZao YiCorresponding
Southwest University of Science and Technology, Jishou University, Joint Laboratory for Extreme Conditions Matter Properties
- JZJian‐Guo Zhang
Jinzhong University
Topics & keywords
- Graphene
- Materials science
- Refractive index
- Optoelectronics
- Index (typography)
- Optics
- Nanotechnology
- Physics
- Affordable and clean energy