scholarly journals Surface-enhanced Raman spectroscopy of novel psychoactive substances using polymer-stabilized Ag nanoparticle aggregates

2016 ◽  
Vol 52 (3) ◽  
pp. 493-496 ◽  
Author(s):  
W. W. Y. Lee ◽  
V. A. D. Silverson ◽  
L. E. Jones ◽  
Y. C. Ho ◽  
N. C. Fletcher ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Surface Enhanced Raman Spectroscopy ◽  
Novel Psychoactive Substances ◽  
Ag Nanoparticle ◽  
Psychoactive Substances ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Nanoparticle Aggregates ◽  
Legal High ◽  
Polymer Stabilized

A set of seized “legal high” samples and pure novel psychoactive substances have been examined by surface-enhanced Raman spectroscopy using polymer-stabilized Ag nanoparticle (Poly-SERS) films.

scholarly journals Effective Plasmonic Coupling and Propagation Facilitates Ultrasensitive and Remote Sensing Using Surface Enhanced Raman Spectroscopy

2019 ◽  
Author(s):  
Collins Nganou ◽  
Andrew Carrier ◽  
Dongchang Yang ◽  
Yongli Chen ◽  
Naizhen Yu ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Single Molecule ◽  
Signal Transmission ◽  
Surface Enhanced Raman Spectroscopy ◽  
Sample Volume ◽  
Remote Detection ◽  
Incident Laser ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Nanoparticle Aggregates

<p>Surface-enhanced Raman spectroscopy (SERS) is a sensitive technique for the detection of analytes through light scattering that is enhanced by chemical and electromagnetic effects through interactions on surfaces, particularly in nano-gaps. Herein we show that dissolved oxygen is the strongest attenuator of the SERS response in aqueous solution and its removal by chemical means can lower the detection limit by 10<sup>9</sup>–10<sup>10</sup> times, to achieve unprecedented sensitivity, i.e., detection of a single molecule in ~300 µL of sample solution. It also enables remote detection of the analyte outside of the field of view of the incident laser beam, e.g., over a distance of 1 m, which we propose is due to the coupling of the plasmonic field within and between nanoparticle aggregates, allowing for signal transmission throughout the sample volume. </p>

Periodic array of regular Ag nanoparticle trimers: a reliable polarization-independent surface-enhanced Raman spectroscopy substrate

RSC Advances ◽  
2016 ◽  
Vol 6 (86) ◽  
pp. 83273-83279 ◽  
Author(s):  
Chao Feng ◽  
Yan Zhao ◽  
Yijian Jiang
Keyword(s):  
Raman Spectroscopy ◽  
Surface Enhanced Raman Spectroscopy ◽  
Periodic Array ◽  
Ag Nanoparticle ◽  
Large Area ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Polarization Independent

A large-area periodic array of regular Ag nanoparticle trimers was fabricated, it possesses polarization-independent SERS performance.

Surface-enhanced Raman spectroscopy for facile DNA detection using gold nanoparticle aggregates formed via photoligation

The Analyst ◽  
2010 ◽  
Vol 135 (3) ◽  
pp. 595 ◽  
Author(s):  
Nguyen T. B. Thuy ◽  
Ryoko Yokogawa ◽  
Yoshinaga Yoshimura ◽  
Kenzo Fujimoto ◽  
Mikio Koyano ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Gold Nanoparticle ◽  
Dna Detection ◽  
Surface Enhanced Raman Spectroscopy ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Nanoparticle Aggregates

scholarly journals Effective Plasmonic Coupling and Propagation Facilitates Ultrasensitive and Remote Sensing Using Surface Enhanced Raman Spectroscopy

2019 ◽  
Author(s):  
Collins Nganou ◽  
Andrew Carrier ◽  
Dongchang Yang ◽  
Yongli Chen ◽  
Naizhen Yu ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Single Molecule ◽  
Signal Transmission ◽  
Surface Enhanced Raman Spectroscopy ◽  
Sample Volume ◽  
Remote Detection ◽  
Incident Laser ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Nanoparticle Aggregates

<p>Surface-enhanced Raman spectroscopy (SERS) is a sensitive technique for the detection of analytes through light scattering that is enhanced by chemical and electromagnetic effects through interactions on surfaces, particularly in nano-gaps. Herein we show that dissolved oxygen is the strongest attenuator of the SERS response in aqueous solution and its removal by chemical means can lower the detection limit by 10<sup>9</sup>–10<sup>10</sup> times, to achieve unprecedented sensitivity, i.e., detection of a single molecule in ~300 µL of sample solution. It also enables remote detection of the analyte outside of the field of view of the incident laser beam, e.g., over a distance of 1 m, which we propose is due to the coupling of the plasmonic field within and between nanoparticle aggregates, allowing for signal transmission throughout the sample volume. </p>

scholarly journals Silver nanoparticle on zinc oxide array for label-free detection of opioids through surface-enhanced raman spectroscopy

RSC Advances ◽  
2021 ◽  
Vol 11 (19) ◽  
pp. 11329-11337
Author(s):  
Michael Zhang ◽  
Congran Jin ◽  
Yuan Nie ◽  
Yundong Ren ◽  
Nanjing Hao ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Zinc Oxide ◽  
Surface Enhanced Raman Spectroscopy ◽  
Great Accuracy ◽  
Label Free ◽  
Ag Nanoparticle ◽  
Label Free Detection ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
On Chip

A plasmonic Ag nanoparticle decorated ZnO array on-chip sensor was developed for label-free detection of opioids through surface-enhanced Raman spectroscopy. The sensor reliably detects opioids as low as 90 ng mL−1 in human blood serum with great accuracy and sensitivity.

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