Title :
Low-Frequency Dominant-Mode Propagation in Spatially Dispersive Graphene Nanowaveguides
Author :
Lovat, G. ; Burghignoli, P. ; Araneo, Rodolfo
Author_Institution :
Dept. of Astronaut., Electr., & Energetic Eng., La Sapienza Univ. of Rome, Rome, Italy
Abstract :
Dispersion properties of the dominant modes supported by different 2-D graphene-based nanowaveguides are studied by means of an exact approach based on the transverse-resonance technique and using an equivalent-circuit representation of graphene sheets which also takes into account the spatially dispersive nature of the graphene conductivity: it is quantitatively shown that neglecting spatial-dispersion effects can cause errors in the determination of the modal properties of extremely slow surface waves, also well below the terahertz regime. The modal features of graphene nanowaveguides are thus investigated in detail showing their potential in future nanoelectromagnetic and nanophotonic applications.
Keywords :
electromagnetic wave propagation; graphene; waveguides; 2D nanowaveguides; equivalent-circuit representation; extremely slow surface waves; graphene conductivity; graphene sheets; low-frequency dominant-mode propagation; modal properties; nanoelectromagnetic applications; nanophotonic applications; spatially dispersive graphene nanowaveguides; transverse-resonance technique; Admittance; Attenuation; Conductivity; Dispersion; Electromagnetic waveguides; Slabs; Graphene; nanotechnology; spatial dispersion;
Journal_Title :
Electromagnetic Compatibility, IEEE Transactions on
DOI :
10.1109/TEMC.2012.2212247