scholarly journals Silver nanoribbons achieved by picosecond ablation using cylindrical focusing and SERS-based trace detection of TNT

RSC Advances ◽  
2020 ◽  
Vol 10 (67) ◽  
pp. 41217-41228
Author(s):  
Haribabu Marrapu ◽  
Ravikiran Avasarala ◽  
Venugopal Rao Soma ◽  
Santosh Kumar Balivada ◽  
Gopala Krishna Podagatlapalli
Keyword(s):  
Laser Ablation ◽  
Raman Scattering ◽  
Input Pulse ◽  
Surface Enhanced Raman Scattering ◽  
Trace Detection ◽  
Silver Nanomaterials ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

We synthesised silver nanomaterials by laser ablation of Ag in DDW with ∼2 ps pulses using cylindrical focussing geometry. Ag nanoribbons were obtained at ∼1200 μJ input pulse and were utilized to detect TNT via surface enhanced Raman scattering studies.

A homogeneous surface-enhanced Raman scattering platform for ultra-trace detection of trinitrotoluene in the environment

2015 ◽  
Vol 7 (9) ◽  
pp. 3863-3868 ◽  
Author(s):  
Arniza K. M. Jamil ◽  
Emad L. Izake ◽  
Arumugam Sivanesan ◽  
Roland Agoston ◽  
Godwin A. Ayoko
Keyword(s):  
Raman Scattering ◽  
Surface Enhanced Raman Scattering ◽  
Trace Detection ◽  
Homogeneous Surface ◽  
Soil P ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Sers Detection ◽  
Enhanced Raman Scattering ◽  
Ultra Trace

Extraction and SERS detection of TNT in soil.

Capture of Phenylalanine and Phenylalanine-Terminated Peptides Using a Supramolecular Macrocycle for Surface-Enhanced Raman Scattering Detection

2020 ◽  
Vol 74 (11) ◽  
pp. 1374-1383
Author(s):  
Jacob E. Olson ◽  
Adam S. Braegelman ◽  
Lei Zou ◽  
Matthew J. Webber ◽  
Jon P. Camden
Keyword(s):  
Raman Scattering ◽  
Direct Detection ◽  
Surface Enhanced Raman Scattering ◽  
Detection Methods ◽  
General Strategy ◽  
Trace Detection ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Nanoparticle Aggregates ◽  
Enhanced Raman Scattering

The cucurbit[n]uril (CB[ n]) family of macrocycles are known to bind a variety of small molecules with high affinity. These motifs thus have promise in an ever-growing list of trace detection methods. Surface-enhanced Raman scattering (SERS) detection schemes employing CB[ n] motifs exhibit increased sensitivity due to selective concentration of the analyte at the nanoparticle surface, coupled with the ability of CB[ n] to facilitate the formation of well-defined electromagnetic hot spots. Herein, we report a CB[7] SERS assay for quantification of phenylalanine (Phe) and further demonstrate its utility for detecting peptides with an N-terminal Phe. The CB[7]–guest interaction improves the sensitivity 5–25-fold over direct detection of Phe using citrate-capped silver nanoparticle aggregates, enabling use of a portable Raman system. We further illustrate detection of insulin via binding of CB[7] to the N-terminal Phe residue on its B-chain, suggesting a general strategy for detecting Phe-terminated peptides of clinically relevant biomolecules.

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