Measurement method of Raman spectroscopy by which the intensity of vibrational bands in the Raman spectra of molecules within a few nanometers of the surface of microscopically rough metals, metal colloids, and metal nanoparticles is increased by up to
\(\pu{E6}\).
Notes: - The metals that give the largest enhancement are silver, gold, and copper, but this phenomenon has been reported to occur with a range of other metals.
- Other mechanisms of enhancement are known, but the common usage of SERS is with a metal or related systems and implies enhancement through interaction with a surface plasmon.
Source:
PAC, 2020, 92, 1781. 'Glossary of methods and terms used in surface chemical analysis (IUPAC Recommendations 2020)' on page 1793 (https://doi.org/10.1515/pac-2019-0404)