The optimisation of facile substrates for surface enhanced Raman scattering through galvanic replacement of silver onto copper

The Analyst ◽  
2012 ◽  
Vol 137 (12) ◽  
pp. 2791 ◽  
Author(s):  
Samuel Mabbott ◽  
Iain A. Larmour ◽  
Vladimir Vishnyakov ◽  
Yun Xu ◽  
Duncan Graham ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Surface Enhanced Raman Scattering ◽  
Galvanic Replacement ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

Gold microsheets having nano/microporous structures fabricated by ultrasonic-assisted cyclic galvanic replacement

RSC Advances ◽  
2015 ◽  
Vol 5 (95) ◽  
pp. 78315-78323 ◽  
Author(s):  
P. Pienpinijtham ◽  
P. Sornprasit ◽  
K. Wongravee ◽  
C. Thammacharoen ◽  
S. Ekgasit
Keyword(s):  
Raman Scattering ◽  
Surface Enhanced Raman Scattering ◽  
Galvanic Replacement ◽  
Sers Substrates ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Ultrasonic Assisted ◽  
Enhanced Raman Scattering

Ultrasonic-assisted cyclic galvanic replacement is proposed to produce nano/microporous gold microsheets that can potentially be used as surface-enhanced Raman scattering (SERS) substrates.

Structure-dependent SERS activity of plasmonic nanorattles with built-in electromagnetic hotspots

The Analyst ◽  
2017 ◽  
Vol 142 (23) ◽  
pp. 4536-4543 ◽  
Author(s):  
Keng-Ku Liu ◽  
Sirimuvva Tadepalli ◽  
Zheyu Wang ◽  
Qisheng Jiang ◽  
Srikanth Singamaneni
Keyword(s):  
Raman Scattering ◽  
Surface Enhanced Raman Scattering ◽  
Galvanic Replacement ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

We investigate the surface enhanced Raman scattering (SERS) activity of plasmonic nanorattles obtained through different degrees of galvanic replacement of Au@Ag nanocubes.

scholarly journals Au@Ag Dendritic Nanoforests for Surface-Enhanced Raman Scattering Sensing

Nanomaterials ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1736
Author(s):  
Hung Ji Huang ◽  
Ming-Hua Shiao ◽  
Yang-Wei Lin ◽  
Bei-Ju Lin ◽  
James Su ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Extinction Spectrum ◽  
Surface Enhanced Raman Scattering ◽  
High Refractive Index ◽  
Galvanic Replacement ◽  
Optical Extinction ◽  
X Ray ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

The effects of Au cores in Ag shells in enhancing surface-enhanced Raman scattering (SERS) were evaluated with samples of various Au/Ag ratios. High-density Ag shell/Au core dendritic nanoforests (Au@Ag-DNFs) on silicon (Au@Ag-DNFs/Si) were synthesized using the fluoride-assisted Galvanic replacement reaction method. The synthesized Au@Ag-DNFs/Si samples were characterized using scanning electron microscopy, energy-dispersive X-ray spectroscopy, reflection spectroscopy, X-ray diffraction, and Raman spectroscopy. The ultraviolet-visible extinction spectrum exhibited increased extinction induced by the addition of Ag when creating the metal DNFs layer. The pure Ag DNFs exhibited high optical extinction of visible light, but low SERS response compared with Au@Ag DNFs. The Au core (with high refractive index real part) in Au@Ag DNFs maintained a long-leaf structure that focused the illumination light, resulting in the apparent SERS enhancement of the Ag coverage.

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