Electromagnetic modeling of a reconfigurable graphene-based metasurface using MoM-GEC method for 3D digital holography

ABSTRACT

Viewing the trend of beam shaping, beam steering, and metasurface holograms, a reconfigurable graphene-based metasurface is proposed and modeled using the method of moments combined with the generalized equivalent circuit (MoM-GEC) approach. The scattering state of each individual unit cell of the metasurface can be controlled by applying different biased voltages into the graphene antennas. In fact, the complex surface conductivity of graphene is introduced in our mathematical formulation in order to tune the magnitude and phase of the local reflection coefficient. Benefitting from this scalability, our graphene-based metasurface will regenerate a 3D medical hologram. The proposed approach is validated and paves the way for the generation a 3D digital holograms. There are several important areas where this study makes an original contribution such as medical imaging 3D displays.

KEYWORDS:

• Metasurface
• holography
• MRI image
• MoM-GEC
• graphene
• Terahertz

ORCID

Imen Soltani http://orcid.org/0000-0003-2039-2665

Takoua Soltani http://orcid.org/0000-0002-5813-5181

Additional information

Notes on contributors

Imen Soltani

Imen Soltani was born in 1990 in Jendouba, Tunisia. She received degree in the national engineering in Telecommunications from ENIT Tunisia in 2013. She is currently working toward the PhD degree at ENIT (SYSCOM laboratory). Her current research interest focuses on the modeling of metasurfaces and holography.

Takoua Soltani

Takoua Soltani was born in 1990 in Jendouba, Tunisia. She received degree in the national engineering in Telecommunications from ENIT Tunisia in 2013. She is currently working toward the PhD degree at ENIT (SYSCOM laboratory). Her current research interest focuses on the modeling of active integrated antennas and RF communications.

Taoufik Aguili

Taoufik Aguili received degree in electrical engineering and the PhD degree in Telecommunications from INSA, France, in 1990. He is a Professor with the National Engineering School of Tunis (ENIT), Tunis, Tunisia. His research interests include electromagnetic microwave circuit modeling and analysis of scattering and propagation phenomena in free space. He is currently a Director of the Communications System Laboratory (SYSCOM).