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Keywords:

  • hierarchical substrates;
  • surface plasmons;
  • metallic structures;
  • surface-enhanced raman scattering
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A highly ordered hierarchical periodic structure with a large area is fabricated to support surface plasmon (SP) and surface-enhanced Raman scattering (SERS). This novel metallic submicro-nano structure described on page 1895 exhibits a complex honeycomb-like geometry, which is confirmed in experiments to support both PSPs and LSPs. Multiple modes of SPs are expected to have co-enhanced Raman scattering, heralding a further development of more sophisticated hybrid surface plasmonic nanodevices.