scholarly journals Silver nanoprisms/graphene oxide/silicon nanowires composites for R6G surface-enhanced Raman spectroscopy sensor

2020 ◽  
Vol 10 (3) ◽  
pp. 5670-5674
Keyword(s):  
Raman Spectroscopy ◽  
Graphene Oxide ◽  
Silicon Nanowires ◽  
Surface Enhanced Raman Spectroscopy ◽  
Maximum Efficiency ◽  
Etching Time ◽  
Nanowire Diameter ◽  
Silver Nanoprisms ◽  
Surface Enhanced ◽  
Surface Enhanced Raman

In this study, Silver nanoprisms/Graphene Oxide/Silicon nanowires (AgNPr/GO/SiNWs) nanocomposites have been fabricated for Surface-Enhanced Raman Spectroscopy (SERS) of Rhodamine 6G (R6G). The SiNWs have been synthesized using the metal-assisted chemical etching method. The surface morphologies of the SiNWs samples have been investigated using scanning electron microscopy. By varying the etching time from 5 to 30 min, the nanowire lengths have been tuned from 2 to 10 µm. While the average nanowire diameter remained unaffected (30-60 nm) with the increase in etching time, increments of nanowires length were found to alter the bundle morphology. The final SERS structure is obtained by depositing the GO layer followed by AgNPr. The obtained SERS sensor exhibited an enhanced efficiency as compared to AgNPr/SiNW matrix. The results demonstrate that a maximum efficiency factor of 6.1×1010 could be achieved with sensor fabricated with 30 min etched SiNWs.

scholarly journals Application of Doehlert Matrix for an Optimized Preparation of a Surface-Enhanced Raman Spectroscopy (SERS) Substrate Based on Silicon Nanowires for Ultrasensitive Detection of Rhodamine 6G

2019 ◽  
Vol 74 (2) ◽  
pp. 168-177 ◽  
Author(s):  
Awatef Ouhibi ◽  
Maroua Saadaoui ◽  
Nathalie Lorrain ◽  
Mohammed Guendouz ◽  
Noureddine Raouafi ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Silver Nitrate ◽  
Silicon Nanowires ◽  
Rhodamine 6G ◽  
Surface Enhanced Raman Spectroscopy ◽  
Influential Factor ◽  
Metallic Surface ◽  
Sers Substrate ◽  
Surface Enhanced ◽  
Surface Enhanced Raman

In this work, we combined a hierarchical nano-array effect of silicon nanowires (SiNWs) with a metallic surface of silver nanoparticles (AgNPs) to design a surface-enhanced Raman spectroscopy (SERS) scattering substrate for sensitive detection of Rhodamine 6G (R6G) which is a typical dye for fluorescence probes. The SiNWs were prepared by Metal-Assisted Chemical Etching (MACE) of n-Si (100) wafers. The Doehlert design methodology was used for planning the experiment and analyzing the experimental results. Thanks to this methodology, the R6G SERS response has been optimized by studying the effects of the silver nitrate concentration, silver nitrate and R6G immersion times and their interactions. The immersion time in R6G solution stands out as the most of influential factor on the SERS response.

3D silver nanoparticles with multilayer graphene oxide as a spacer for surface enhanced Raman spectroscopy analysis

Nanoscale ◽  
2018 ◽  
Vol 10 (13) ◽  
pp. 5897-5905 ◽  
Author(s):  
Zhen Li ◽  
Shouzhen Jiang ◽  
Yanyan Huo ◽  
Tingyin Ning ◽  
Aihua Liu ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Silver Nanoparticles ◽  
Graphene Oxide ◽  
Surface Enhanced Raman Spectroscopy ◽  
Multilayer Graphene ◽  
Spectroscopy Analysis ◽  
Surface Enhanced ◽  
Surface Enhanced Raman

We explore the variation of SERS performance towards two different Ag NP layers using multilayer GO as a spacer.

Fabrication of flexible silicon nanowires by self-assembled metal assisted chemical etching for surface enhanced Raman spectroscopy

RSC Advances ◽  
2016 ◽  
Vol 6 (96) ◽  
pp. 93649-93659 ◽  
Author(s):  
S. A. Kara ◽  
A. Keffous ◽  
A. M. Giovannozzi ◽  
A. M. Rossi ◽  
E. Cara ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Silicon Nanowires ◽  
Chemical Etching ◽  
Surface Enhanced Raman Spectroscopy ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Metal Assisted Chemical Etching ◽  
Self Assembled

Flexible silicon nanowires fabricated by nano spheres lithography and metal assisted chemical etching for surface enhanced Raman spectroscopy.

One-pot in situ photochemical synthesis of graphene oxide/gold nanorod nanocomposites for surface-enhanced Raman spectroscopy

RSC Advances ◽  
2015 ◽  
Vol 5 (58) ◽  
pp. 46552-46557 ◽  
Author(s):  
A. J. Caires ◽  
D. C. B. Alves ◽  
C. Fantini ◽  
A. S. Ferlauto ◽  
L. O. Ladeira
Keyword(s):  
Raman Spectroscopy ◽  
Graphene Oxide ◽  
Gold Nanorods ◽  
Surface Enhanced Raman Spectroscopy ◽  
Photochemical Synthesis ◽  
One Pot ◽  
Highly Sensitive ◽  
Surface Enhanced ◽  
Surface Enhanced Raman

One-pot process is demonstrated that produces gold nanorods/graphene oxide nanocomposites that can be used as highly sensitive surface-enhanced Raman spectroscopy substrates.

Morphological evolution of gold nanoparticles on silicon nanowires and their plasmonics

RSC Advances ◽  
2015 ◽  
Vol 5 (61) ◽  
pp. 49708-49718 ◽  
Author(s):  
Yuan Li ◽  
Wenwu Shi ◽  
Aditya Gupta ◽  
Nitin Chopra
Keyword(s):  
Gold Nanoparticles ◽  
Raman Spectroscopy ◽  
Silicon Nanowires ◽  
Au Nanoparticles ◽  
Morphological Evolution ◽  
Surface Enhanced Raman Spectroscopy ◽  
Si Nanowires ◽  
One Dimensional ◽  
Surface Enhanced ◽  
Surface Enhanced Raman

One-dimensional heterostructures composed of silicon (Si) nanowires and uniformly decorated with gold (Au) nanoparticles were fabricated and used as a substrate for organic detection based on the surface-enhanced Raman spectroscopy.

Silicon Nanowires Coated with Silver Nanostructures as Ultrasensitive Interfaces for Surface-Enhanced Raman Spectroscopy

2009 ◽  
Vol 1 (7) ◽  
pp. 1396-1403 ◽  
Author(s):  
Elisabeth Galopin ◽  
Jacques Barbillat ◽  
Yannick Coffinier ◽  
Sabine Szunerits ◽  
Gilles Patriarche ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Silicon Nanowires ◽  
Surface Enhanced Raman Spectroscopy ◽  
Silver Nanostructures ◽  
Surface Enhanced ◽  
Surface Enhanced Raman

Tracking the intracellular drug release from graphene oxide using surface-enhanced Raman spectroscopy

Nanoscale ◽  
2013 ◽  
Vol 5 (21) ◽  
pp. 10591 ◽  
Author(s):  
Jie Huang ◽  
Cheng Zong ◽  
He Shen ◽  
Yuhua Cao ◽  
Bin Ren ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Graphene Oxide ◽  
Drug Release ◽  
Surface Enhanced Raman Spectroscopy ◽  
Surface Enhanced ◽  
Surface Enhanced Raman
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