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Keywords:

  • Aggregation;
  • Nanoparticles, metal;
  • Nanorods, metal;
  • Raman spectroscopy, surface enhanced
Thumbnail image of graphical abstract

Silver platelets and silver-coated gold nanorods 20–100 nm in size (with a 10–20 nm short axis; see figure) have been identified as excellent candidates for surface-enhanced Raman spectroscopy (SERS) substrates. Salt-induced particle aggregation is essential in obtaining high sensitivity.