Explosives standoff detection using Raman spectroscopy: from bulk towards trace detection

2010 ◽  
Author(s):  
Anna Pettersson ◽  
Sara Wallin ◽  
Henric Östmark ◽  
Anneli Ehlerding ◽  
Ida Johansson ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Trace Detection ◽  
Standoff Detection

scholarly journals Deep Raman spectroscopy for the non-invasive standoff detection of concealed chemical threat agents

Talanta ◽  
2012 ◽  
Vol 94 ◽  
pp. 342-347 ◽  
Author(s):  
Emad L. Izake ◽  
Biju Cletus ◽  
William Olds ◽  
Shankaran Sundarajoo ◽  
Peter M. Fredericks ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Non Invasive ◽  
Standoff Detection

scholarly journals Designing dendronic-Raman markers for sensitive detection using surface-enhanced Raman spectroscopy

RSC Advances ◽  
2019 ◽  
Vol 9 (48) ◽  
pp. 28222-28227
Author(s):  
Priyanka Jain ◽  
Robi Sankar Patra ◽  
Sridhar Rajaram ◽  
Chandrabhas Narayana
Keyword(s):  
Raman Spectroscopy ◽  
Surface Enhanced Raman Spectroscopy ◽  
Sensitive Detection ◽  
Trace Detection ◽  
New Approach ◽  
Sers Enhancement ◽  
Surface Enhanced ◽  
Surface Enhanced Raman

A new approach of tuning SERS enhancement with the aid of coupling chemistry for trace detection. A greater number of Raman-active molecules are constrained in a dendronic framework as an improved SERS analyte.

scholarly journals Standoff detection of trace amounts of solids by nonlinear Raman spectroscopy using shaped femtosecond pulses

2008 ◽  
Vol 92 (17) ◽  
pp. 171116 ◽  
Author(s):  
O. Katz ◽  
A. Natan ◽  
Y. Silberberg ◽  
S. Rosenwaks
Keyword(s):  
Raman Spectroscopy ◽  
Femtosecond Pulses ◽  
Standoff Detection

scholarly journals Cascaded microsphere-coupled surface-enhanced Raman spectroscopy (CMS-SERS) for ultrasensitive trace-detection

Nanophotonics ◽  
2022 ◽  
Vol 0 (0) ◽  
Author(s):  
Yanlin Mi ◽  
Yinzhou Yan ◽  
Mengyuan Wang ◽  
Lixue Yang ◽  
Jing He ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Limit Of Detection ◽  
Surface Enhanced Raman Spectroscopy ◽  
Sers Substrate ◽  
Trace Detection ◽  
Excitation Light ◽  
Analytical Technique ◽  
Nano Structures ◽  
Surface Enhanced ◽  
Surface Enhanced Raman

Abstract Surface-enhanced Raman spectroscopy (SERS) has been widely investigated and employed as a powerful optical analytical technique providing fingerprint vibrational information of molecules with high sensitivity and resolution. In addition to metallic nanostructure, dielectric micro-/nano-structures with extraordinary optical manipulation properties have demonstrated capability in enhanced Raman scattering with ultralow energy losses. Here we report a facile cascaded structure composed of a large microsphere (LMS) and a small microsphere array with Ag nanoparticles as a novel hybrid SERS substrate, for the first time. The cascaded microsphere-coupled SERS substrate provides a platform to increase the molecular concentration, boost the intensity of localized excitation light, and direct the far-field emission, for giant Raman enhancement. It demonstrates the maximum enhancement factor of Raman intensity greater than 108 for the limit of detection down to 10−11 M of 4-nitrothiphenol molecules in aqueous solution. The present work inspires a novel strategy to fabricate cascaded dielectric/metallic micro-/nano-structures superior to traditional SERS substrates towards practical applications in cost-effective and ultrahigh-sensitive trace-detection.

scholarly journals Photo-induced enhanced Raman spectroscopy for universal ultra-trace detection of explosives, pollutants and biomolecules

2016 ◽  
Vol 7 (1) ◽  
Author(s):  
Sultan Ben-Jaber ◽  
William J. Peveler ◽  
Raul Quesada-Cabrera ◽  
Emiliano Cortés ◽  
Carlos Sotelo-Vazquez ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Trace Detection ◽  
Ultra Trace ◽  
Detection Of Explosives
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