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Multipolar contributions to the optical response. Au superlattice (25%) comprising 10-nm-diameter (A) and 40-nm-diameter (B) spheres. The structures here are isostructural to those simulated in Table 2. Generalized Mie theory was used to limit the number of VSH (multipoles where n = 1 dipole, n = 2, quadrupole,…) allowed in the simulation.
