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. 2016 Jul 8;6:29429. doi: 10.1038/srep29429

Figure 1. Plasmonic structure made of a corrugated metal strips adhered on an ultrathin dielectric layer for exciting the spoof SPPs.

Figure 1

(a) Schematic illustration of the plasmonic structure. (b) Dispersion relations of the spoof SPPs supported by the structures of varying width h. Distributions of the electric field Ey in the x-z plane for (c) even and (d) odd modes at different frequencies for the structure with h = 6.5 mm.