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Low-Frequency Dominant-Mode Propagation in Spatially Dispersive Graphene Nanowaveguides

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3 Author(s)
Lovat, G. ; Dept. of Astronaut., Electr., & Energetic Eng., La Sapienza Univ. of Rome, Rome, Italy ; Burghignoli, P. ; Araneo, R.

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.

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Electromagnetic Compatibility, IEEE Transactions on  (Volume:55 ,  Issue: 2 )