Figure 3: Dispersion and field profile of designer surface plasmons.
From: Probing topological protection using a designer surface plasmon structure
(a) Schematic of an array of metallic rods on a flat metallic surface. (b) Dispersions of designer surface plasmons with heights of rods h=3.5 mm (star curve), h=4.3 mm (triangle curve) and h=5.0 mm (circle curve), respectively. The black solid line is the light line. (c) Mode profile of |E| field in the cross-section of a metallic rod that is perpendicular to the wave-guiding direction (h=5.0 mm).
