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Keywords:

  • dielectric nanospheres;
  • second harmonic generation;
  • circular dichroism;
  • gratings;
  • plasmonic–photonic structures
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A. Belardini et al. find that hybrid structures composed by self-ordered dielectric nanospheres partially covered by gold nanocrescents produce an efficient second harmonic generation signal due to the cooperative effect of localized plasmon excitation and a 2D Bragg grating. Asymmetries in the geometric shape of the gold nanocrescents induce a circularly polarized optical response.