Fig. 6
From: Direct observation of valley-polarized topological edge states in designer surface plasmon crystals
Topological protection of the edge state in a Z-shaped waveguide. a Schematic diagram of a Z-shaped topological waveguide formed between patterns A and patterns B. The corner angle α = 60°. b Simulated field map of E z component at 7.50 GHz. The green dashed rectangle denotes the region of the area 208 × 220 mm2 scanned in experiments. The color indicates the amplitude of E z component. The scale bar is 60 mm. c Measured field map of E z component at 7.50 GHz. The color indicates the amplitude of E z component. The scale bar is 40 mm
