Surface-Enhanced Raman Scattering on Gold Nanohole Arrays in Symmetrical Dielectric Environments Exhibiting Electric Field Extension

2016 ◽  
Vol 120 (44) ◽  
pp. 25519-25529 ◽  
Author(s):  
Daniel David Galvan ◽  
Barbora Špačková ◽  
Jiří Slabý ◽  
Fang Sun ◽  
Yu-Han Ho ◽  
...  
Keyword(s):  
Electric Field ◽  
Raman Scattering ◽  
Surface Enhanced Raman Scattering ◽  
Field Extension ◽  
Surface Enhanced ◽  
Nanohole Arrays ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

Local Electric Field Enhancement of Neighboring Ag Nanoparticles in Surface Enhanced Raman Scattering

2013 ◽  
Vol 760-762 ◽  
pp. 801-805 ◽  
Author(s):  
Chao Yue Deng ◽  
Gu Ling Zhang ◽  
Bin Zou ◽  
Hong Long Shi ◽  
Yu Jie Liang ◽  
...  
Keyword(s):  
Electric Field ◽  
Raman Scattering ◽  
Electric Fields ◽  
Ag Nanoparticles ◽  
Surface Enhanced Raman Scattering ◽  
Ag Nps ◽  
Sers Enhancement ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

We used a simple low-temperature hydrothermal approach to synthesize Ag nanoparticles (NPs) and demonstrated their efficiency as organic molecule detectors in surface enhanced Raman Scattering (SERS). Using finite difference time domain simulation, we described an investigation on the distribution of electric fields amplitude of the neighboring Ag NPs. The enhanced electric field is confined at the interparticle gaps and the enhancement factor can be further increased with reducing the spacing between the NPs. The theoretical simulation demonstrated good consistency with the experimental measurement results, which predicts an electric fields amplitude enhancement of 115 at the center of NPs gap and an electromagnetic SERS enhancement of 108. The evidence of clear correlations between SERS enhancement and morphology distribution offer a route to develop more effective SERS substrates.

scholarly journals Tailoring plasmonic properties of gold nanohole arrays for surface-enhanced Raman scattering

2015 ◽  
Vol 17 (33) ◽  
pp. 21211-21219 ◽  
Author(s):  
Peng Zheng ◽  
Scott K. Cushing ◽  
Savan Suri ◽  
Nianqiang Wu
Keyword(s):  
Raman Scattering ◽  
Tuning Range ◽  
Nanosphere Lithography ◽  
Surface Enhanced Raman Scattering ◽  
Nanohole Array ◽  
Surface Enhanced ◽  
Nanohole Arrays ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering ◽  
Plasmonic Tuning

The wide plasmonic tuning range of nanotriangle and nanohole array patterns fabricated by nanosphere lithography makes them promising in surface-enhanced Raman scattering (SERS) sensors.

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