Periodic metal resonator chains for surface enhanced Raman scattering (SERS).
- Resource Type
- Article
- Authors
- Sievers, J.; Below, M.; Reinhardt, C.; Heyroth, F.; Schlenker, S.; Schmidt, G.; Sprafke, A.; Schilling, J.
- Source
- Journal of Applied Physics. 12/14/2021, Vol. 130 Issue 22, p1-7. 7p.
- Subject
- *SERS spectroscopy
*GOLD
*RESONATORS
*PLASMONICS
- Language
- ISSN
- 0021-8979
A periodic arrangement of chains of gold disks shows pronounced plasmonic grating resonances. These have a clear impact on the surface enhanced Raman-scattering (SERS) signal from 4-methylbenzenethiol molecules, which form self-assembled monolayers on the gold surface: Besides a clear polarization dependence, the SERS-spectra also exhibit a maximum when the excitation laser wavelength matches the plasmonic grating resonance. These features are explained by a combined near and far field coupling of the individual plasmonic dipoles allowing the design of optimized nanostructures for effective SERS substrates in the future. [ABSTRACT FROM AUTHOR]