scholarly journals Active site-dominated electromagnetic enhancement of surface-enhanced Raman spectroscopy (SERS) on a Cu triangle plate

RSC Advances ◽  
2020 ◽  
Vol 10 (69) ◽  
pp. 42030-42037
Author(s):  
Chang Li ◽  
Mingqiang Chen
Keyword(s):  
Raman Spectroscopy ◽  
Rough Surface ◽  
Active Site ◽  
Chemical Etching ◽  
Surface Enhanced Raman Spectroscopy ◽  
Electromagnetic Enhancement ◽  
Surface Enhanced ◽  
Enhancement Factors ◽  
Surface Enhanced Raman

Chemical etching CTP to create a rough surface that has high enhancement factors of SERS.

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 Highly Sensitive Surface Enhanced Raman Spectroscopy from Ag Nanoparticles Decorated Graphene Sheet

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Hui Song ◽  
Xin Li ◽  
Sweejiang Yoo ◽  
Yuan Wu ◽  
Weihua Liu ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Size Distribution ◽  
Ag Nanoparticles ◽  
Surface Enhanced Raman Spectroscopy ◽  
Sers Substrate ◽  
Ag Nps ◽  
Sers Enhancement ◽  
Surface Enhanced ◽  
Enhancement Factors ◽  
Surface Enhanced Raman

Surface enhanced Raman spectroscopy (SERS) is a powerful analytical technique and has been most intensively studied. In this work, electroless deposition is proposed for Ag nanoparticles (NPs) decorated on chemical vapor deposition (CVD) growth graphene sheets (GS) to create hybrid SERS substrate. From three aspects of size distribution, morphology, and coverage, Ag NPs controllable decoration on GS and SERS enhancement factors of the hybrid SERS substrate is investigated. 200–300 times enhanced SERS intensities are detected from the Ag NPs on GS hybrid as compared to pure GS. Controllable decoration is crucial for improving SERS enhancement factorsβEF, becauseβEFfrom quasi cubic Ag NPs on GS is 6.53 times stronger than that from spheric one; 1.6 timesβEFis detected while the Ag NPs size distribution is reduced to half, and when the coverage is doubled,βEFis nearly doubled. This controllable Ag NPs/GS hybrid is capable of serving as a high performance SERS substrate for efficient chemical and biological sensing applications.

scholarly journals Study of electromagnetic enhancement for surface enhanced Raman spectroscopy of SiC graphene

2012 ◽  
Vol 100 (19) ◽  
pp. 191601 ◽  
Author(s):  
Jing Niu ◽  
Viet Giang Truong ◽  
Han Huang ◽  
Sudhiranjan Tripathy ◽  
Caiyu Qiu ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Surface Enhanced Raman Spectroscopy ◽  
Electromagnetic Enhancement ◽  
Surface Enhanced ◽  
Surface Enhanced Raman

Investigating the effect of Ag nanocube polydispersity on gap-mode SERS enhancement factors

The Analyst ◽  
2016 ◽  
Vol 141 (12) ◽  
pp. 3916-3924 ◽  
Author(s):  
Tyler J. Dill ◽  
Matthew J. Rozin ◽  
Eric R. Brown ◽  
Stephen Palani ◽  
Andrea R. Tao
Keyword(s):  
Raman Spectroscopy ◽  
Surface Enhanced Raman Spectroscopy ◽  
Sers Substrates ◽  
Sers Enhancement ◽  
Raman Enhancement ◽  
Surface Enhanced ◽  
Enhancement Factors ◽  
Surface Enhanced Raman ◽  
Ag Nanocube ◽  
Gap Mode

Colloidal polydispersity has a significant impact on the high Raman enhancement factors (EFs) for nanoparticle-based surface-enhanced Raman spectroscopy (SERS) substrates.

Qualitative analysis of some alkanethiols on Au nanoparticles during SERS

RSC Advances ◽  
2016 ◽  
Vol 6 (15) ◽  
pp. 12131-12142 ◽  
Author(s):  
R. A. Harris ◽  
M. Mlambo ◽  
P. S. Mdluli
Keyword(s):  
Raman Spectroscopy ◽  
Qualitative Analysis ◽  
Au Nanoparticles ◽  
Surface Enhanced Raman Spectroscopy ◽  
Surface Enhanced ◽  
Enhancement Factors ◽  
Surface Enhanced Raman ◽  
Surfactant Systems

The surface enhanced Raman spectroscopy enhancement factors (SERS EFs) for different AuNP–surfactant systems are measured and the observed trend is theoretically and qualitatively investigated.

Bacterial detection and differentiation via direct volatile organic compound sensing with surface enhanced Raman spectroscopy

2017 ◽  
Author(s):  
Caitlin S. DeJong ◽  
David I. Wang ◽  
Aleksandr Polyakov ◽  
Anita Rogacs ◽  
Steven J. Simske ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Bacterial Infections ◽  
Direct Detection ◽  
Point Of Care ◽  
Surface Enhanced Raman Spectroscopy ◽  
E Coli ◽  
Recent Emergence ◽  
Surface Enhanced ◽  
Volatile Organic ◽  
Surface Enhanced Raman

Through the direct detection of bacterial volatile organic compounds (VOCs), via surface enhanced Raman spectroscopy (SERS), we report here a reconfigurable assay for the identification and monitoring of bacteria. We demonstrate differentiation between highly clinically relevant organisms: <i>Escherichia coli</i>, <i>Enterobacter cloacae</i>, and <i>Serratia marcescens</i>. This is the first differentiation of bacteria via SERS of bacterial VOC signatures. The assay also detected as few as 10 CFU/ml of <i>E. coli</i> in under 12 hrs, and detected <i>E. coli</i> from whole human blood and human urine in 16 hrs at clinically relevant concentrations of 10<sup>3</sup> CFU/ml and 10<sup>4</sup> CFU/ml, respectively. In addition, the recent emergence of portable Raman spectrometers uniquely allows SERS to bring VOC detection to point-of-care settings for diagnosing bacterial infections.

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