Title :
Dual capacitive-inductive nature of graphene metasurface: Transmission characteristics at low-terahertz frequencies
Author :
Padooru, Y.R. ; Yakovlev, A.B. ; Kaipa, Chandra S. R. ; Hansony, George W. ; Medina, Francisco ; Mesa, Francisco
Author_Institution :
Dept. of Electr. Eng., Univ. of Mississippi, Oxford, MS, USA
Abstract :
We report on the dual nature (capacitive and inductive) of the surface impedance of periodic graphene patches at low-terahertz frequencies. The transmission spectra of a graphene-dielectric stack shows that patterned graphene exhibits both the low-frequency (capacitive) passband of metal patch arrays and the higher-frequency (inductive) passband of metal aperture arrays in a single tunable configuration. The analysis is carried out using a transfer matrix approach with two-sided impedance boundary conditions, and the results are verified using full-wave numerical simulations.
Keywords :
capacitors; electromagnetic wave transmission; frequency selective surfaces; graphene; inductors; terahertz metamaterials; dual capacitive-inductive nature; graphene metasurface capacitive-inductive nature; graphene-dielectric stack; higher-frequency passband; low terahertz frequency; low-frequency passband; metal aperture arrays; metal patch arrays; patterned graphene; periodic graphene patch; single tunable configuration; surface impedance; transmission characteristics; Dielectrics; Graphene; Impedance; Metals; Optical surface waves; Slabs; Surface impedance;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2013 IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4673-5315-1
DOI :
10.1109/APS.2013.6711458
