Figure 2.

(a) Resonance permittivities (Equation (11)) of two identical GNRs in the s-s or e-e configuration for decreasing d; (b) ${\lambda }_{\max }$ (Equation (14)) of two identical GNRs in the s-s or e-e configuration for decreasing d. ${\epsilon }_m=n_m^2={1.33}^2$, ${\lambda }_p=183$ nm, GNR width = 19 nm, GNR length = 50 nm, and $\mathrm{AR}=50/19$.