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. 2016 Jun 14;6:27817. doi: 10.1038/srep27817

Figure 3. Comparisons between 3D conductive coupling and capacitive coupling.

Figure 3

(a) Normalized transmission spectra of the 3D MMs with SRRs to that of EOT structure under different gap distances (unit: nm) upon y-polarized excitation. (b) (left) Absolute peak-to-dip depth and (right) dip wavelength as a function of the gap distance for resonances #1 and #2, respectively. Structural parameters are the same as in Fig. 2 except the gap distance g. Fano resonance #1 is mainly resulted from the 3D conductive coupling, which will be more discussed in following studies.