Large-area Ag nanoparticle arrays for plasmonically enhanced Raman scattering

2012 ◽  
Author(s):  
R. M. Osgood ◽  
P. D. Stenhouse ◽  
C. E. Quigley ◽  
M. L. Hoey ◽  
J. B. Carlson ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Nanoparticle Arrays ◽  
Ag Nanoparticle ◽  
Large Area ◽  
Enhanced Raman Scattering

Synthesis and Near-Field Enhancement of Composite Nanoarrays Based on Electrodeposition and in Situ Reaction

NANO ◽  
2021 ◽  
Author(s):  
Jing Wu ◽  
Jiali Shen ◽  
Jinghuai Fang ◽  
Lu Xu
Keyword(s):  
Synergistic Effect ◽  
Raman Scattering ◽  
Surface Enhanced Raman Scattering ◽  
Metal Nanostructures ◽  
Nanoparticle Arrays ◽  
Ag Nanoparticle ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

Since the morphology and element composition of metal nanostructures strongly affect the surface plasma oscillation characteristics, it has been widely concerned in surface enhanced Raman scattering (SERS). Herein, we proposed a novel route to fabricate composite Au/Ag nanoparticle arrays with synergistic effect for electromagnetic enhancement. Ag nanoparticles were electrodeposited onto a home-made template with highly ordered bowl-like pits. After a novel method of “confined annealing”, we further achieved well-regulated spherical Ag NP arrays, and the composite Au/Ag nanoparticle arrays were finally obtained via in situ replacement. The fabricated composite nanostructures showed stable and sensitive surface enhanced Raman scattering (SERS) performance mainly due to the synergistic effect and abundant “hot spots”, with the enhancement factor (EF) of [Formula: see text] for crystal violet (CV) molecules. In addition, this simple and effective preparation process greatly improved the uniformity of three-dimensional nanostructures, providing a new idea for further improving the stability of SERS signals.

Large-Scale, Reliable and Robust SERS-Active Nanowire Substrates Prepared Using Porous Alumina Templates

2008 ◽  
Vol 8 (2) ◽  
pp. 931-935 ◽  
Author(s):  
G. Kartopu ◽  
M. Es-Souni ◽  
A. V. Sapelkin ◽  
D. Dunstan
Keyword(s):  
Raman Scattering ◽  
Large Scale ◽  
Porous Alumina ◽  
Surface Enhanced Raman Scattering ◽  
Nanowire Arrays ◽  
Nanoparticle Arrays ◽  
Large Area ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

We have developed new concepts and successfully prepared large area, ordered, and compact nanowire arrays for surface-enhanced Raman scattering applications. These nanowire films were synthesized via electrodeposition using porous alumina templates of varying order, thickness and pore diameters. Mechanical polishing has been shown to be a very effective method to prepare nanowire arrays with monodisperse length over comprehensively large dimensions. On the other hand, a convenient synthesis route has been suggested that allows the formation of nanoparticle arrays using very thin and/or large area porous alumina films. It is reckoned that even films with the smallest obtainable pore sizes can be utilized to prepare large area, fine nanoparticle arrays. Such arrays may also find use in other areas, such as solar cells and electrochemistry. Preliminary Raman experiments indicated that the nanowire/nanoparticle arrays are indeed surface-enhanced Raman scattering-active. Finally, the potentials offered by the reported processing methods for fabricating substrates with predictable and high Raman amplifications are discussed.

Plasmo-photonic nanowire arrays for large-area surface-enhanced Raman scattering sensors

2010 ◽  
Author(s):  
Joshua D. Caldwell ◽  
Orest J. Glembocki ◽  
Ronald W. Rendell ◽  
Sharka M. Prokes ◽  
James P. Long ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Surface Enhanced Raman Scattering ◽  
Nanowire Arrays ◽  
Large Area ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering
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