Surface-enhanced Raman scattering (or spectroscopy), known as SERS, is an advanced analysis method that extends the range of Raman applications to trace analysis, such as part-per-million-level detection of a pollutant in water or different liquids. SERS has a high potential to be used in the fields of biochemistry, forensics, food safety, threat detection and medical diagnostics.
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Source: Phys.org