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Experimental tests of surface‐enhanced Raman scattering: Moving beyond the electromagnetic enhancement theory
- Source :
- Journal of Raman Spectroscopy
- Publication Year :
- 2020
- Publisher :
- Wiley, 2020.
-
Abstract
- The electromagnetic enhancement theory describes surface-enhanced Raman scattering (SERS) as a Raman effect that takes place in the near-field of a plasmonic nanostructure. The theory has been very successful in explaining the fundamental properties of SERS, modelling the performance of different metals as enhancing materials and optimizing SERS hotspots for strongest possible enhancement. Over the last decade, a number of carefully designed experimental studies have examined predictions of the electromagnetic theory like the size and shape of SERS hotspots, the absolute magnitude of the enhancement and the width of the SERS resonance. Although the overall picture was quite satisfactory, the theory failed to predict key aspects of SERS, for example, the absolute magnitude of the plasmonic enhancement. We scrutinize these experiments and review them focusing on the results that require going beyond the electromagnetic enhancement theory. We argue that the results of these experiments create the need to develop the theory of SERS further, especially the exact role of plasmonic enhancement in inelastic light scattering.
- Subjects :
- polarization
Materials science
SERS
500 Naturwissenschaften und Mathematik::530 Physik::530 Physik
absolute SERS enhancement
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
Polarization (waves)
01 natural sciences
Molecular physics
0104 chemical sciences
plasmon
symbols.namesake
symbols
electromagnetic enhancement
General Materials Science
0210 nano-technology
Raman spectroscopy
Spectroscopy
Raman scattering
Plasmon
Subjects
Details
- ISSN :
- 10974555 and 03770486
- Volume :
- 52
- Database :
- OpenAIRE
- Journal :
- Journal of Raman Spectroscopy
- Accession number :
- edsair.doi.dedup.....3d170f91792b83e1390ef812df9321d7
- Full Text :
- https://doi.org/10.1002/jrs.6014