What is SERS?
SERS stands for Surface Enhanced Raman Scattering or Spectroscopy. In the physical form, it comes as a substrate or sub-micro particles. These are used to enhance the otherwise weak Raman signatures by using the resonance plasmonic effect when the suitable Laser is used. SERS substrate or particles are made mostly from Gold or Silver material which suit 785nm or 532nm, respectively, wavelength very well although might varies depending on its design.