(Invited) Trace Level Detections By Surface-Enhanced Raman Scattering

摘要

The Raman signals of molecules attached on the very surface of noble metals nanostructures can be greatly enhanced due to the enhancement of the local electric field, by the localized surface plasmon resonance of the nanostructures incident by the laser beam. Therefore, one can make Raman scattering a powerful means in recognizing and quantifying molecules at trace levels. This, however, relies on the sensitivity, stability, etc., of the nanostructures which are used as the substrate surface-enhanced Raman scattering (SERS), and also, the methodologies to quantify the molecules, which are quite difficult even for normal Raman scattering.