Chromatographic paper embedded with silver nanostructure as a disposable substrate for surface-enhanced Raman spectroscopy and catalytic reactor

2015 ◽  
Vol 46 (2) ◽  
pp. 211-216 ◽  
Author(s):  
Bei Nie ◽  
Qiuhong Zhou ◽  
Jiming He ◽  
Fumo Yang
Keyword(s):  
Raman Spectroscopy ◽  
Surface Enhanced Raman Spectroscopy ◽  
Catalytic Reactor ◽  
Chromatographic Paper ◽  
Silver Nanostructure ◽  
Surface Enhanced ◽  
Surface Enhanced Raman

Silver nanoparticle-decorated titanium dioxide nanowire systems via bioinspired poly(L-DOPA) thin film as surface-enhanced Raman spectroscopy (SERS) platform, and photocatalyst

2021 ◽  
Author(s):  
Hayrunnisa Mazlumoglu ◽  
Mehmet Yilmaz
Keyword(s):  
Thin Film ◽  
Raman Spectroscopy ◽  
Titanium Dioxide ◽  
Silver Nanoparticle ◽  
Recent Progress ◽  
Surface Enhanced Raman Spectroscopy ◽  
Silver Nanostructure ◽  
Surface Enhanced ◽  
Surface Enhanced Raman

Silver nanostructure decorated-titanium dioxide (TiO2) nanocomposite systems with their unique characteristics provide extraordinary performances in various applications including surface-enhanced Raman spectroscopy (SERS), and photocatalysis. Despite the recent progress, novel, simple,...

scholarly journals Laser-Fabricated Plasmonic Nanostructures for Surface-Enhanced Raman Spectroscopy of Bacteria Quorum Sensing Molecules

MRS Advances ◽  
2017 ◽  
Vol 2 (42) ◽  
pp. 2287-2294 ◽  
Author(s):  
Kyle Culhane ◽  
Ke Jiang ◽  
Aaron Neumann ◽  
Anatoliy O. Pinchuk
Keyword(s):  
Raman Spectroscopy ◽  
Quorum Sensing ◽  
Silver Ions ◽  
Homoserine Lactone ◽  
Surface Enhanced Raman Spectroscopy ◽  
Plasmonic Nanostructures ◽  
Silver Nanostructures ◽  
Silver Nanostructure ◽  
Surface Enhanced ◽  
Surface Enhanced Raman

ABSTRACTA laser deposition technique, based on the photo-reduction of silver ions from an aqueous solution, was used to fabricate silver nanostructure surfaces on glass cover slips. The resulting silver nanostructures exhibited plasmonic properties, which show promise in applications towards surface enhanced Raman spectroscopy (SERS). Using the standard thiophenol, the enhancement factor calculated for the deposits was approximately ∼106, which is comparable to other SERS-active plasmonic nanostructures fabricated through more complex techniques, such as electron beam lithography. The silver nanostructures were then employed in the enhancement of Raman signals from N-butyryl-L-homoserine lactone, a signaling molecule relevant to bacteria quorum sensing. In particular, the work presented herein shows that the laser-deposited plasmonic nanostructures are promising candidates for monitoring concentrations of signaling molecules within biofilms containing quorum sensing bacteria.

Surface-enhanced Raman spectroscopy using a coffee-ring-type three-dimensional silver nanostructure

RSC Advances ◽  
2015 ◽  
Vol 5 (2) ◽  
pp. 1378-1384 ◽  
Author(s):  
R. Hara ◽  
T. Fukuoka ◽  
R. Takahashi ◽  
Y. Utsumi ◽  
A. Yamaguchi
Keyword(s):  
Raman Spectroscopy ◽  
Three Dimensional ◽  
Surface Enhanced Raman Spectroscopy ◽  
Ring Type ◽  
Silver Nanostructure ◽  
Coffee Ring ◽  
Surface Enhanced ◽  
Surface Enhanced Raman

We demonstrated surface-enhanced Raman spectroscopy using a coffee-ring-type three-dimensional silver nanostructure (Ag3D).

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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