Graphene oxide and shape-controlled silver nanoparticle hybrids for ultrasensitive single-particle surface-enhanced Raman scattering (SERS) sensing

Nanoscale ◽  
2014 ◽  
Vol 6 (9) ◽  
pp. 4843-4851 ◽  
Author(s):  
Wei Fan ◽  
Yih Hong Lee ◽  
Srikanth Pedireddy ◽  
Qi Zhang ◽  
Tianxi Liu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Single Particle ◽  
Enhancement Factor ◽  
Particle Surface ◽  
Chemical Enhancement ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering ◽  
Shape Controlled ◽  
Sers Sensing

Ag octahedron nanoparticles are assembled with graphene oxide (GO) sheets to form Ag octahedron@GO hybrids. Owing to the excellent chemical enhancement of GO, single particle SERS demonstrates an enhancement factor of 9 × 105, which is twice as large as that of a pure octahedron.

Surface-enhanced Raman spectroscopy for DNA detection by the self-assembly of Ag nanoparticles onto Ag nanoparticle–graphene oxide nanocomposites

2015 ◽  
Vol 17 (28) ◽  
pp. 18443-18448 ◽  
Author(s):  
Tsung-Wu Lin ◽  
Hong-Yi Wu ◽  
Ting-Ti Tasi ◽  
Ying-Huang Lai ◽  
Hsin-Hui Shen
Keyword(s):  
Graphene Oxide ◽  
Self Assembly ◽  
Ag Nanoparticles ◽  
Surface Enhanced Raman Spectroscopy ◽  
The Self ◽  
Sensing System ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering ◽  
Sers Sensing

A novel surface-enhanced Raman scattering (SERS) sensing system which operates by the self-assembly of Ag nanoparticles (AgNPs) onto the nanocomposite of AgNPs and graphene oxide (AgNP–GO) in the presence of two complementary DNAs has been developed.

scholarly journals Hybrid Au/Si Disk-Shaped Nanoresonators on Gold Film for Amplified SERS Chemical Sensing

Nanomaterials ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 1588 ◽  
Author(s):  
Grégory Barbillon ◽  
Andrey Ivanov ◽  
Andrey K. Sarychev
Keyword(s):  
Raman Scattering ◽  
Small Molecules ◽  
Enhancement Factor ◽  
Chemical Sensing ◽  
Gold Film ◽  
Surface Enhanced ◽  
Enhancement Factors ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering ◽  
Sers Sensing

We present here the amplification of the surface-enhanced Raman scattering (SERS) signal of nanodisks on a gold film for SERS sensing of small molecules (thiophenol) with an excellent sensitivity. The enhancement is achieved by adding a silicon underlayer for the composition of the nanodisks. We experimentally investigated the sensitivity of the suggested Au/Si disk-shaped nanoresonators for chemical sensing by SERS. We achieved values of enhancement factors of 5 × 10 7 − 6 × 10 7 for thiophenol sensing. Moreover, we remarked that the enhancement factor (EF) values reached experimentally behave qualitatively as those evaluated with the E 4 model.

Size-controllable and uniform gold bumpy nanocubes for single-particle-level surface-enhanced Raman scattering sensitivity

2019 ◽  
Vol 21 (18) ◽  
pp. 9044-9051 ◽  
Author(s):  
Hyejin Chang ◽  
Yoon Young Lee ◽  
Hye Eun Lee ◽  
Hyo-Yong Ahn ◽  
Eunbyeol Ko ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Single Particle ◽  
Particle Surface ◽  
Surface Enhanced Raman Scattering ◽  
Level Surface ◽  
Scattering Intensity ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Particle Level ◽  
Enhanced Raman Scattering

Gold nanocubes modified to form roughened structures with very strong and uniform single-particle surface-enhanced Raman scattering intensity were developed.

Nanoporous silver microstructure for single particle surface-enhanced Raman scattering spectroscopy

RSC Advances ◽  
2015 ◽  
Vol 5 (2) ◽  
pp. 1391-1397 ◽  
Author(s):  
Kanet Wongravee ◽  
Harnchana Gatemala ◽  
Chuchaat Thammacharoen ◽  
Sanong Ekgasit ◽  
Sanpon Vantasin ◽  
...  
Keyword(s):  
Single Particle ◽  
Particle Surface ◽  
Galvanic Replacement ◽  
Sers Substrate ◽  
Galvanic Replacement Reaction ◽  
Replacement Reaction ◽  
Raman Scattering Spectroscopy ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

Nanoporous silver microstructures were successfully fabricated from hexapod AgCl microstructures via a galvanic replacement reaction to be used as an easy handling and reusable SERS substrate.

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