Figure 7
From: Plasmonic and photonic scattering and near fields of nanoparticles
Angular scattering distributions. Of (a) the quadrupole (magnetic) mode at λ = 502 nm of a dielectric nanoparticle (n = 2, k = 0, r = 170 nm, in blue) and the quadrupole (electric) mode at λ = 426 nm of a metallic nanoparticle (Ag fitted with Drude model, r = 120 nm, in red) in air; (b) dipole, (c) quadrupole, and (d) hexapole electric mode of the above mentioned metallic particle in air (red) and on a substrate with n = 1.5 (green) at the resonance wavelengths of 688/914 nm (b), 426/524 nm (c), and 340/420 nm (d) (incident light from the top).