Abstract
In this paper, a structure based on metal-graphene-insulator–metal (MGIM) is designed as a tunable plasmonic perfect absorber (PPA) in the FIR-band range. Simulation results performed with the 3D finite difference time domain (FDTD) method show that in the perpendicular incidence of a plane wave light in the range of 35 to 105 µm, the absorption spectrum of the proposed device has a resonance peak with absorption above 95%, which can show excellent tunability by applying a gate bias voltage to the graphene nanolayers in the structure. In our proposed structure unit cell, there is a C1 graphene nanolayer in the center and a C2 graphene nanolayer around it that bias voltage is applied only to C2, then changing the chemical potential of the two graphene nanolayers relative to each other, the absorption spectrum of the device shifts in the desired wavelength range.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
