Back to Search
Start Over
Study of Signal-to-Background Ratio of Surface-Enhanced Raman Scattering: Dependences on Excitation Wavelength and Hot-Spot Gap
- Source :
- The Journal of Physical Chemistry C. 121:26438-26445
- Publication Year :
- 2017
- Publisher :
- American Chemical Society (ACS), 2017.
-
Abstract
- Signal-to-background ratio of surface-enhanced Raman scattering (SERS) plays an important role in the analytic applications of SERS. Its dependences on excitation wavelength and gap between metal particles were studied theoretically and experimentally. We show that this ratio is higher at smaller gaps for the same excitation wavelength and is higher for the wavelengths having higher values of the absolute values of the dielectric function of the metal. This study thus results in design guidelines in the fabrication of SERS-active substrates with high signal-to-background ratio.
- Subjects :
- Surface (mathematics)
Materials science
Fabrication
Physics::Optics
Hot spot (veterinary medicine)
02 engineering and technology
010402 general chemistry
01 natural sciences
Molecular physics
Signal
Metal
symbols.namesake
Physical and Theoretical Chemistry
Excitation wavelength
business.industry
021001 nanoscience & nanotechnology
0104 chemical sciences
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
Wavelength
General Energy
visual_art
visual_art.visual_art_medium
symbols
Optoelectronics
0210 nano-technology
business
Raman scattering
Subjects
Details
- ISSN :
- 19327455 and 19327447
- Volume :
- 121
- Database :
- OpenAIRE
- Journal :
- The Journal of Physical Chemistry C
- Accession number :
- edsair.doi...........2bacaec3fd277fef4b703cafed217217