Figure 5
From: Plasmonic coupling in closed-packed ordered gallium nanoparticles

Qext analysis as a function of the wavelength and energy for two different scenarios. (a) A spherical single core-shell Ga NP and (b) a pair of Ga NPs with a variable interparticle distance. The Qext spectra of the single NP is also plotted in (b) for comparison. The distribution of the near electric field is illustrated in the inset of each scenario indicating the evaluated wavelength and the electric field direction. In the (b) inset, only the near-field for interparticle distances of 2, 4, 8 and 20 nm are shown.