scholarly journals 3D-Printed Peptide-Hydrogel Nanoparticle Composites for Surface-Enhanced Raman Spectroscopy Sensing

2019 ◽  
Vol 2 (8) ◽  
pp. 5029-5034 ◽  
Author(s):  
Sawsan Almohammed ◽  
Maha Alruwaili ◽  
Emmanuel G. Reynaud ◽  
Gareth Redmond ◽  
James H. Rice ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Surface Enhanced Raman Spectroscopy ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
3D Printed ◽  
Nanoparticle Composites ◽  
Peptide Hydrogel

Review on Graphene Nanoparticle Composites

2021 ◽  
Vol 3 (1) ◽  
pp. 46-66
Author(s):  
Ankita Ghosh ◽  
Soma Samaddar'
Keyword(s):  
Raman Spectroscopy ◽  
Surface Enhanced Raman Spectroscopy ◽  
Catalytic Reactions ◽  
Electrochemical Sensing ◽  
Synthetic Approach ◽  
Comb Structure ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Nanoparticle Composites

In recent years, graphene has attracted atlcntion. Grapheneis a thick planar sheet of Sp2 bonded carbon atoms. Its lattice is honey comb structure. Graphene is one of the most rising material due to its various fascinatingl properties. From recent study it is proved that graphene based composites with different nanoparticle show extensive applielltion. In this review we focus on recent developement in the synthetic approach, properties and the facilities of use of graph nanoparticle comosites. The advantages of graphene-nanupartide composites are specifically observed in catalytic reactions, electrochemical sensing, detection by surface enhanced Raman spectroscopy, purification of waterusing adsurbent and other applications are discussed here.

Targeting improved reproducibility in surface-enhanced Raman spectroscopy with planar substrates using 3D printed alignment holders

2021 ◽  
Vol 92 (4) ◽  
pp. 043102
Author(s):  
Buddini Iroshika Karawdeniya ◽  
Robert B. Chevalier ◽  
Y. M. Nuwan D. Y. Bandara ◽  
Jason R. Dwyer
Keyword(s):  
Raman Spectroscopy ◽  
Surface Enhanced Raman Spectroscopy ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
3D Printed ◽  
Planar Substrates

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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