scholarly journals Experimental Evidence of a Twofold Electromagnetic Enhancement Mechanism of Surface-Enhanced Raman Scattering

2020 ◽  
Vol 124 (38) ◽  
pp. 21215-21222 ◽  
Author(s):  
Samir Kumar ◽  
Kouta Tokunaga ◽  
Kyoko Namura ◽  
Takao Fukuoka ◽  
Motofumi Suzuki
Keyword(s):  
Raman Scattering ◽  
Experimental Evidence ◽  
Surface Enhanced Raman Scattering ◽  
Enhancement Mechanism ◽  
Electromagnetic Enhancement ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

Surface-enhanced Raman scattering on organic–inorganic hybrid perovskites

2018 ◽  
Vol 54 (17) ◽  
pp. 2134-2137 ◽  
Author(s):  
Xiaoyue Su ◽  
Hao Ma ◽  
He Wang ◽  
Xueliang Li ◽  
Xiao Xia Han ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Raman Scattering ◽  
Surface Enhanced Raman Scattering ◽  
Inorganic Hybrid ◽  
Enhancement Mechanism ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering ◽  
First Time

For the first time SERS on organic–inorganic hybrid perovskites is explored. The enhancement mechanism is discussed according to charge transfer.

Molecular hot spots in surface-enhanced Raman scattering

Nanoscale ◽  
2020 ◽  
Vol 12 (43) ◽  
pp. 22036-22041
Author(s):  
Ming Li ◽  
Scott K. Cushing ◽  
Guangwen Zhou ◽  
Nianqiang Wu
Keyword(s):  
Raman Scattering ◽  
Hot Spots ◽  
Surface Enhanced Raman Scattering ◽  
Aromatic Molecules ◽  
Electromagnetic Enhancement ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

This work reports that aromatic molecules adsorbed on the Au surface can create “molecular hot spots” for electromagnetic enhancement of surface-enhanced Raman scattering.

scholarly journals Experimental Evidence of Two-fold Electromagnetic Enhancement Mechanism of Surface-Enhanced Raman Scattering

2020 ◽  
Author(s):  
Samir Kumar ◽  
Kouta Tokunaga ◽  
Kyoko Namura ◽  
Takao Fukuoka ◽  
Motofumi Suzuki
Keyword(s):  
Raman Scattering ◽  
Scattered Light ◽  
Surface Enhanced Raman Scattering ◽  
Nanorod Array ◽  
Enhancement Mechanism ◽  
Light Interference ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering ◽  
Local Plasmon

The surface-enhanced Raman scattering (SERS) electromagnetic (EM) enhancement mechanism is a two-fold enhancement process in which both the incident and scattered Raman fields are enhanced. In this letter, we present new direct evidence of the two-fold EM mechanism by using an Ag nanorod array/SiO<sub>2</sub> dielectric layer/Ag mirror multilayer thin film "local plasmon resonator". The two-fold EM enhancement mechanism of SERS was confirmed by analyzing the optical absorption and Raman scattering spectra of the local plasmon resonator for excitation and scattered light. The effect of light interference was altered by varying the film thickness of the SiO<sub>2</sub> phase control layer (PCL), and the absorbance in the Raman scattering wavelength range was reduced from 90% to 0%. We also demonstrated that the intensity of the background emission is closely related to the enhancement of the scattered field and provides substantial evidence for a two-fold SERS enhancement mechanism.

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