Figure 10
From: Full-wave electromagnetic modes and hybridization in nanoparticle dimers

Scattering efficiency \({\sigma }_{sca}\) of a Si-spheres homodimer as a function of the size parameter \(x=2\pi R/\lambda \), obtained via material-independent-mode expansion (black line) and by direct-calculation (red dots). The radius of each sphere is R, the edge-edge distance \(R/4\). The dimer is excited by a plane wave polarized along the dimer’s axis \(\hat{{\bf{z}}}\) and propagating along the transverse direction \(\hat{{\bf{x}}}\). Partial scattering efficiency (in color) of eight dominant dimer-modes whose xz-plane projections (real part) are shown on the right.