Graphene-metasurface for wide-incident-angle terahertz absorption
Ri-hui XIONG , Xiao-qing PENG , Jiu-sheng LI
Front. Inform. Technol. Electron. Eng ›› 2021, Vol. 22 ›› Issue (3) : 334 -340.
Graphene-metasurface for wide-incident-angle terahertz absorption
We demonstrate a graphene-metasurface structure for tunable wide-incident-angle terahertz wave absorption, which involves depositing planar arrays of Omega-shaped graphene patterns on a silicon dioxide substrate. We also discuss how the graphene Fermi-level layer and various substrates affect the absorption characteristics. The absorption of the proposed terahertz absorber is above 80% at an incident angle of 0°–60° in frequencies ranging from 0.82 to 2.0 THz. Our results will be very beneficial in the application of terahertz wave communications and biomedical imaging/sensing systems.
Graphene-metasurface / Terahertz absorber / Omega-shaped graphene patterns
Zhejiang University and Springer-Verlag GmbH Germany, part of Springer Nature
/
| 〈 |
|
〉 |
PDF
(3058KB)
