Terahertz metamaterials

Quantum mechanics

Ellipse

Detector

Frequency modulation

Fermi level

Amplitude modulation

Metallurgy

Materials science

Graphene

Modulation (music)

Coupling (piping)

Atomic physics

Shot noise

Radio frequency

Telecommunications

Metamaterial

Computer science

Acoustics

Split-ring resonator

Fano resonance

Laser

Physics

Nanotechnology

Amplitude

Mathematics

Optics

Astronomy

Fermi energy

Fano factor

Terahertz radiation

Resonance (particle physics)

Condensed matter physics

Geometry

Plasmon

Electron

Far-infrared laser

Fano plane

Optoelectronics

Physica E Low-dimensional Systems and Nanostructures

Based on a graphene asymmetric sdouble ellipse (ADE) structure, the tunable Fano resonance characteristics in the terahertz range have been symmetrically studied, including the effects of graphene Fermi levels, asymmetrical degrees, operation frequencies and structural parameters. The results show that due to the strong coupling between the incident THz waves and graphene ADE structures, a strong Fano peak can be observed by arranging double ellipse asymmetrically. The maximum peak of Fano resonance reaches 0.918, and its Q-factor is about 20. As the asymmetrical degree of the ADE structure increases, the Fano peak value increases, and the amplitude modulation depth reaches about 75%. As graphene level increases, the amplitude and frequency modulation depths reaches more than 31% and 11%, respectively. These results are very helpful to design novel tunable graphene devices with high Q-factor devices in the future, such as sensors, modulators, and filters.

Investigation of graphene supported terahertz elliptical metamaterials