Figure 1

(a) Dispersion, (b) propagation length, (c) localization length, and (d) figure of merit of the SPPs supported by a single-layer graphene on various dielectric substrates at μ = 0.2 eV; εs = 2.25 (solid blue line), 11.7 (dotted-dashed red line), 16 (dotted black line), and 35 (dashed pink line). The schematic of the studied structure is depicted in panel (d), inset.