Figure 1
From: Plasmonic Fano resonance and dip of Au-SiO2-Au nanomatryoshka
Configuration of Au-SiO 2 -Au nanomatryushka irradiated by a radial electric dipole or a z -polarized plane wave. The radii of the outer Au shell, the SiO2 shell, and the Au core are denoted by a1, a2, and a3, respectively.