Angular and polarization dependence of surface-enhanced Raman scattering in attenuated-total-reflection geometry

1987 ◽  
Vol 36 (2) ◽  
pp. 917-921 ◽  
Author(s):  
J. P. Goudonnet ◽  
T. Inagaki ◽  
E. T. Arakawa ◽  
and T. L. Ferrell
Keyword(s):  
Raman Scattering ◽  
Surface Enhanced Raman Scattering ◽  
Total Reflection ◽  
Polarization Dependence ◽  
Attenuated Total Reflection ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering ◽  
Reflection Geometry

Polarization Dependence of Surface-Enhanced Raman Scattering in Gold Nanoparticle−Nanowire Systems

Nano Letters ◽  
2008 ◽  
Vol 8 (8) ◽  
pp. 2497-2502 ◽  
Author(s):  
Hong Wei ◽  
Feng Hao ◽  
Yingzhou Huang ◽  
Wenzhong Wang ◽  
Peter Nordlander ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Gold Nanoparticle ◽  
Surface Enhanced Raman Scattering ◽  
Polarization Dependence ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

scholarly journals Polarization Dependence of Surface Enhanced Raman Scattering on a Single Dielectric Nanowire

2012 ◽  
Vol 2012 ◽  
pp. 1-9 ◽  
Author(s):  
Hua Qi ◽  
R. W. Rendell ◽  
O. J. Glembocki ◽  
S. M. Prokes
Keyword(s):  
Raman Scattering ◽  
Incident Light ◽  
Surface Enhanced Raman Scattering ◽  
Polarization Dependence ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Silver Composites ◽  
Enhanced Raman Scattering ◽  
Theoretical Simulations ◽  
Good Agreement

Our measurements of surface enhanced Raman scattering (SERS) on Ga2O3dielectric nanowires (NWs) core/silver composites indicate that the SERS enhancement is highly dependent on the polarization direction of the incident laser light. The polarization dependence of the SERS signal with respect to the direction of a single NW was studied by changing the incident light angle. Further investigations demonstrate that the SERS intensity is not only dependent on the direction and wavelength of the incident light, but also on the species of the SERS active molecule. The largest signals were observed on an NW when the incident 514.5 nm light was polarized perpendicular to the length of the NW, while the opposite phenomenon was observed at the wavelength of 785 nm. Our theoretical simulations of the polarization dependence at 514.5 nm and 785 nm are in good agreement with the experimental results.

The critical importance of gap modes in surface enhanced Raman scattering

2015 ◽  
Vol 178 ◽  
pp. 203-220 ◽  
Author(s):  
Masayuki Futamata ◽  
Maho Ishikura ◽  
Chiaki Iida ◽  
Saori Handa
Keyword(s):  
Raman Scattering ◽  
Surface Plasmons ◽  
Surface Enhanced Raman Scattering ◽  
Attenuated Total Reflection ◽  
Adsorbed State ◽  
Metal Substrates ◽  
Counter Ions ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

For efficient utilization of surface plasmons in surface enhanced Raman scattering (SERS), we investigated the gap modes in flocculates of metal nanoparticles (MNPs), and between MNPs and metal substrates under an external and an attenuated total reflection (ATR) geometry. First, the adsorbed state of thiol molecules and counter ions trapped in solutions were elucidated using flocculation-SERS, in which closely adjacent nanoparticles are formed by using interactions between MNPs and target species. Second, we obtained a pronounced enhancement of 105–108 at a nanogap between gold nanoparticles (AuNPs) and various metal substrates even with a large damping under an external geometry. Markedly larger enhancement was obtained for larger AuNPs, by a factor of 103 for particles with a radius (r) of 50 nm compared with those of r = 15 nm in this geometry. Finally, we attained an additional enhancement factor under an ATR geometry by a coupling of propagating surface plasmons with gap modes.

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