Fig. 3From: Electroless Gold-Modified Diatoms as Surface-Enhanced Raman Scattering SupportsRaman (red trace) and SERS (blue trace) spectrum of pMA. The estimated number of sampled molecules is 2.55 × 1011 for the Raman spectrum and 2.90 × 106 for SERS, so that an enhancement factor of about 105 can be estimatedBack to article page