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(a) Schematics of five of the different surface morphologies investigated. Normalized scattering cross-sections of lumpy particles with core radius 100 nm and roughing radius from 0 to 120 nm radii surrounding a 100 nm radius core particle for materials (b) Cu, (c) Al, and (d) Ag in free space.
Scattering enhancement factor for the Qscat of lumpy nanoparticles over smooth particles of the same volume embedded in free space where the lumpy particles have a relative roughing radius of half of the core radius. The core radius in nm is listed in the legend.
Scattering enhancement factor for the Qscat of lumpy nanoparticles (100:50) over smooth particles of the same volume embedded in surrounding media with refractive index (RI) of 1 to 3 for nanoparticles of (a) Cu, (b) Al, and (c) Ag.
Scattering enhancement maps of a 100:50 lumpy particle against a smooth particle of the same volume for Cu, Al and Ag in free space. Scattering enhancement is recorded as a function of forward, backward, and sideward directions at a distance of 165 nm from the particle center. Each material has its own enhancement scale.
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