scholarly journals Colloidal core–shell materials with ‘spiky’ surfaces assembled from gold nanorods

2014 ◽  
Vol 50 (60) ◽  
pp. 8157-8160 ◽  
Author(s):  
Iris W. Guo ◽  
Idah C. Pekcevik ◽  
Michael C. P. Wang ◽  
Brandy K. Pilapil ◽  
Byron D. Gates
Keyword(s):  
Raman Spectroscopy ◽  
Gold Nanorods ◽  
Self Assembly ◽  
Colloidal Particles ◽  
Surface Enhanced Raman Spectroscopy ◽  
The Self ◽  
Core Shell ◽  
Surface Enhanced ◽  
Resonance Properties ◽  
Surface Enhanced Raman

Colloidal particles are prepared with a ‘spiky’ surface topography achieved by the self-assembly of gold nanorods onto the surfaces of spherical polystyrene cores. These core–shell assemblies exhibit surface plasmon resonance properties and serve as a platform for surface-enhanced Raman spectroscopy measurements.

Lay Gold Nanorods Monolayer down on Solid Surfaces for Surface Enhanced Raman Spectroscopy Applications

2021 ◽  
Author(s):  
haidong Zhao ◽  
Katsuhiro Isozaki ◽  
Tomoya Taguchi ◽  
Shengchun Yang ◽  
Kazushi Miki
Keyword(s):  
Raman Spectroscopy ◽  
Gold Nanorods ◽  
Hybrid Method ◽  
Self Assembly ◽  
Surface Enhanced Raman Spectroscopy ◽  
Solid Substrate ◽  
Solvent Evaporation ◽  
Solid Surfaces ◽  
Surface Enhanced ◽  
Surface Enhanced Raman

Laying-down gold nanorods (GNRs) of a monolayer immobilized on a solid substrate was realized with the hybrid method, a combination of three elemental technologies: self-assembly, electrophoresis, and solvent evaporation. The...

scholarly journals Bimetallic Core–Shell Nanoparticles of Gold and Silver via Bioinspired Polydopamine Layer as Surface-Enhanced Raman Spectroscopy (SERS) Platform

Nanomaterials ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 688 ◽  
Author(s):  
Asli Yilmaz ◽  
Mehmet Yilmaz
Keyword(s):  
Raman Spectroscopy ◽  
Low Cost ◽  
Silver Ions ◽  
Surface Enhanced Raman Spectroscopy ◽  
Core Shell ◽  
Silver Deposition ◽  
Shell Nanoparticles ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Core Shell Nanoparticles

Despite numerous attempts to fabricate the core–shell nanoparticles, novel, simple, and low-cost approaches are still required to produce these efficient nanosystems. In this study, we propose the synthesis of bimetallic core–shell nanoparticles of gold (AuNP) and silver (AgNP) nanostructures via a bioinspired polydopamine (PDOP) layer and their employment as a surface-enhanced Raman spectroscopy (SERS) platform. Herein, the PDOP layer was used as an interface between nanostructures as well as stabilizing and reducing agents for the deposition of silver ions onto the AuNPs. UV-vis absorption spectra and electron microscope images confirmed the deposition of the silver ions and the formation of core–shell nanoparticles. SERS activity tests indicated that both the PDOP thickness and silver deposition time are the dominant parameters that determine the SERS performances of the proposed core–shell system. In comparison to bare AuNPs, more than three times higher SERS signal intensity was obtained with an enhancement factor of 3.5 × 105.

Self-assembly of ultrathin gold nanowires and single walled carbon nanotubes as a highly sensitive substrate for surface enhanced Raman spectroscopy

2016 ◽  
Vol 40 (9) ◽  
pp. 7286-7289 ◽  
Author(s):  
Yuanchao Zhang ◽  
Jingquan Liu ◽  
Da Li ◽  
Fuhua Yan ◽  
Xin Wang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Raman Spectroscopy ◽  
Self Assembly ◽  
Single Walled Carbon Nanotubes ◽  
Surface Enhanced Raman Spectroscopy ◽  
Gold Nanowires ◽  
Highly Sensitive ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Walled Carbon Nanotubes

Self-assembly of ultrathin gold nanowires and single-walled carbon nanotubes as highly sensitive substrates for surface enhanced Raman spectroscopy.

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