Tunable Broadband Terahertz Metamaterial Absorber Based on Graphene
Southwest University of Science and Technology · Guangxi Normal University · +3 more institutions
Abstract
This paper puts forward a novel proportional structure for a tunable broadband absorber in the terahertz (THz) frequency band, with graphene as its core material. In the pursuit of an optimal design, we maintain a proportional distance between the top graphene structure and the periodic edges. This design enables excellent absorptance, surpassing 90% in the 2.89–6.43 (3.54) THz frequency range. Notably, at f = 4.25 THz, perfect absorption is achieved. At f = 5.8 THz, the absorptance nears 95%, and at f = 5.47 THz, it is around 91%. The average absorptance within the 2.89–6.43 THz range reaches 94.5%. By calculating the impedance of the absorber, the favorable absorption frequency band is demonstrated.…
Citation impact
- FWCI
- 29.00
- Percentile
- 100%
- References
- 79
Authors
5Topics & keywords
- Terahertz radiation
- Broadband
- Absorptance
- Metamaterial absorber
- Absorption (acoustics)
- Graphene
- Electric field
- Metamaterial