Figure 4

The nETR spectra for different V-shaped nanorod structures. (a) The nETR spectra for V-shaped structures shown in Figure 3a with different gap widths compared with the single nanorod structure. (b) The nETR spectra for V-shaped structures with different corner parts for g = 10 nm and $r_0=20\sqrt{3}\mathrm{nm}$. (c) The nETR spectra for V-shaped structures shown in Figure 3b with different radii of the cylinder corner part and $r_0=20\sqrt{3}\mathrm{nm}$. (d) The nETR spectra for V-shaped structures shown in Figure 3b with $r_0=20\sqrt{3}\mathrm{nm}$ when the cylinder corner part is made of different materials; the case with n = 1 corresponds to the case with no corner part shown in Figure 3c. The other parameters are θ₁ = θ _D = 60°, θ₂ = θ _A = 60°, L′ = 290 nm, and d = 20 nm.