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.

scholarly journals Reusable Surface-Enhanced Raman Spectroscopy Substrates Made of Silicon Nanowire Array Coated with Silver Nanoparticles Fabricated by Metal-Assisted Chemical Etching and Photonic Reduction

Nanomaterials ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 1531 ◽  
Author(s):  
Shi Bai ◽  
Yongjun Du ◽  
Chunyan Wang ◽  
Jian Wu ◽  
Koji Sugioka
Keyword(s):  
Silver Nanoparticles ◽  
Chemical Etching ◽  
Silicon Nanowire ◽  
Nanowire Array ◽  
Surface Enhanced Raman Spectroscopy ◽  
Sers Substrate ◽  
Silicon Nanowire Array ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Metal Assisted Chemical Etching

Surface-enhanced Raman spectroscopy (SERS) has advanced over the last four decades and has become an attractive tool for highly sensitive analysis in fields such as medicine and environmental monitoring. Recently, there has been an urgent demand for reusable and long-lived SERS substrates as a means of reducing the costs associated with this technique To this end, we fabricated a SERS substrate comprising a silicon nanowire array coated with silver nanoparticles, using metal-assisted chemical etching followed by photonic reduction. The morphology and growth mechanism of the SERS substrate were carefully examined and the performance of the fabricated SERS substrate was tested using rhodamine 6G and dopamine hydrochloride. The data show that this new substrate provides an enhancement factor of nearly 1 × 108. This work demonstrates that a silicon nanowire array coated with silver nanoparticles is sensitive and sufficiently robust to allow repeated reuse. These results suggest that this newly developed technique could allow SERS to be used in many commercial applications.

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.

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
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