Competitive surface-enhanced Raman scattering effects in noble metal nanoparticle-decorated graphene sheets

2011 ◽  
Vol 13 (47) ◽  
pp. 21116 ◽  
Author(s):  
Shengtong Sun ◽  
Peiyi Wu
Keyword(s):  
Raman Scattering ◽  
Noble Metal ◽  
Surface Enhanced Raman Scattering ◽  
Metal Nanoparticle ◽  
Graphene Sheets ◽  
Scattering Effects ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

scholarly journals Modeling and Experimental Investigations of Nanostructured Ag Thin Films Produced by Oblique-Angle Deposition and Its SERS Performance

Coatings ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 458
Author(s):  
Datai Hui ◽  
Shun Zhou ◽  
Changlong Cai ◽  
Shigeng Song ◽  
Zhentao Wu ◽  
...  
Keyword(s):  
Thin Film ◽  
Raman Scattering ◽  
Surface Enhanced Raman Scattering ◽  
Oblique Angle ◽  
Scattering Effects ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering ◽  
Simulation Results ◽  
Deposition Angle

The growth mechanism of nanocolumnar silver thin film deposited on a smooth silicon substrate using electron beam evaporation process at an oblique angle was simulated with the Kinetic Monte Carlo method. Following the simulated silver nanostructured thin film, a further computational simulation was done using COMSOL for surface-enhanced Raman scattering effects. The simulation results were compared against corresponding experimental results, which demonstrated high agreement between simulation results and experimental data. It was found that as the incident deposition angle increased, the density of the Ag thin film significantly decreased and the surface roughness increased. When the incident deposition angle was at 75° and 85°, the resulting nanocolumnar structure was significantly tilted. For Ag thin films deposited at all investigated angles, surface-enhanced Raman scattering effects were observed. Particularly, the Ag nanocolumns deposited at 85° showed remarkable Surface-enhanced Raman Scattering effects. This was seen in both COMSOL simulations and experimental results: Enhancement factors were 2 × 107 in COMSOL simulation and 3.3 × 105 in the experiment.

Finite-Size Effects and Surface-Enhanced Raman Scattering in Noble-Metal Nanoparticles

2004 ◽  
Vol 818 ◽  
Author(s):  
Vitaliy N. Pustovit ◽  
Tigran V. Shahbazyan
Keyword(s):  
Raman Scattering ◽  
Metal Nanoparticles ◽  
Noble Metal ◽  
Finite Size ◽  
Surface Enhanced Raman Scattering ◽  
Noble Metal Nanoparticles ◽  
Raman Signal ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

AbstractWe study the role of a strong electron confinement on the surface-enhanced Raman scattering from molecules adsorbed on small noble-metal nanoparticles. We describe a novel enhancement mechanism which originates from the different effect that confining potential has on s-band and d-band electrons. We demonstrate that the interplay between finite-size and screening efects in the nanoparticle surface layer leads to an enhancement of the surface plasmon local field acting on a molecule located in a close proximity to the metal surface. Our calculations show that the additional enhancement of the Raman signal is especially strong for small nanometer-sized nanoparticles.

Surface-enhanced Raman scattering (SERS) chips made from metal nanoparticle-doped polymer fibers

RSC Advances ◽  
2014 ◽  
Vol 4 (45) ◽  
pp. 23838-23845 ◽  
Author(s):  
Wenran Gao ◽  
Gang Chen ◽  
Weiqing Xu ◽  
Chenggong Yang ◽  
Shuping Xu
Keyword(s):  
Raman Scattering ◽  
Surface Enhanced Raman Scattering ◽  
Metal Nanoparticle ◽  
Microfluidic Channels ◽  
Polymer Nanofiber ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering ◽  
Nanofiber Mats ◽  
Doped Polymer

We employed an electrospinning method to prepare metal nanoparticle (NP) doped polymer nanofiber mats, which can be easily cut to size and fixed on slides or in microfluidic channels for surface-enhanced Raman scattering (SERS) measurements.

Monodisperse Noble-Metal Nanoparticles and Their Surface Enhanced Raman Scattering Properties

2008 ◽  
Vol 20 (22) ◽  
pp. 6939-6944 ◽  
Author(s):  
Chengmin Shen ◽  
Chao Hui ◽  
Tianzhong Yang ◽  
Congwen Xiao ◽  
Jifa Tian ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Metal Nanoparticles ◽  
Noble Metal ◽  
Surface Enhanced Raman Scattering ◽  
Noble Metal Nanoparticles ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering
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