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Dual capacitive-inductive nature of periodic graphene patches: Transmission characteristics at low-terahertz frequencies

 

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Opened Access Dual capacitive-inductive nature of periodic graphene patches: Transmission characteristics at low-terahertz frequencies
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Author: Padooru, Yashwanth R.
Yakovlev, Alexander B.
Kaipa, Chandra S. R.
Hanson, George W.
Medina Mena, Francisco
Mesa Ledesma, Francisco Luis
Department: Universidad de Sevilla. Departamento de Electrónica y Electromagnetismo
Universidad de Sevilla. Departamento de Física Aplicada I
Date: 2013
Published in: Physical Review B - Condensed Matter and Materials Physics, 87 (11), 115401.
Document type: Article
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. In addition, the Bloch-wave analysis of the corresponding infinite periodic structure is presented in order to explain the passband and stopband characteristics of the finite graphene-dielectric stack.
Size: 2.255Mb
Format: PDF

URI: http://hdl.handle.net/11441/58788

DOI: http://dx.doi.org/10.1103/PhysRevB.87.115401

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