Figure 3
From: Backward spoof surface wave in plasmonic metamaterial of ultrathin metallic structure
Transverse electric field (Ez) distribution (a) and its evolution ((b, c)) along the proposed CSP structure. Left or right parts of (a) corresponds to point A or B as marked in Fig. 1b indicating a forward or a backward wave propagation, respectively. (b) and (c) demonstrate the field evolution of the forward and backward wave corresponding to point A and B as marked in Fig.1b. The black dashed line denotes the phase front in the field evolution and the red arrow in (b) and (c) indicates the direction of EM power flow.
