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Integrated Laser Sensor (ILS) for Remote Surface Analysis: Application for Detecting Explosives in Fingerprints

Here, we describe an innovative Integrated Laser Sensor (ILS) that combines four spectroscopic techniques and two vision systems into a unique, transportable device. The instrument performs Raman and Laser-Induced Fluorescence (LIF) spectroscopy excited at 355 nm and Laser-Induced Breakdown Spectros...

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Autores principales: Lazic, Violeta, Palucci, Antonio, De Dominicis, Luigi, Nuvoli, Marcello, Pistilli, Marco, Menicucci, Ivano, Colao, Francesco, Almaviva, Salvatore
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6806108/
https://www.ncbi.nlm.nih.gov/pubmed/31581543
http://dx.doi.org/10.3390/s19194269
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author Lazic, Violeta
Palucci, Antonio
De Dominicis, Luigi
Nuvoli, Marcello
Pistilli, Marco
Menicucci, Ivano
Colao, Francesco
Almaviva, Salvatore
author_facet Lazic, Violeta
Palucci, Antonio
De Dominicis, Luigi
Nuvoli, Marcello
Pistilli, Marco
Menicucci, Ivano
Colao, Francesco
Almaviva, Salvatore
author_sort Lazic, Violeta
collection PubMed
description Here, we describe an innovative Integrated Laser Sensor (ILS) that combines four spectroscopic techniques and two vision systems into a unique, transportable device. The instrument performs Raman and Laser-Induced Fluorescence (LIF) spectroscopy excited at 355 nm and Laser-Induced Breakdown Spectroscopy (LIBS) excited at 1064 nm, and it also detects Laser Scattering (LS) from the target under illumination at 650 nm. The combination of these techniques supplies information about: material change from one scanning point to another, the presence of surface contaminants, the molecular and elemental composition of top target layers. Switching between the spectroscopic techniques and the laser wavelengths is fully automatic. The instrument is equipped with an autofocus and it performs scanning with a chosen grid density over an interactively-selected target area. Alternative to the spectroscopic measurements, it is possible to switch the instrument to a high magnification target viewing. The working distances tested until now are between 8.5 and 30 m. The instrument is self-powered and remotely controlled via wireless communication. The ILS has been fully developed at ENEA for security applications and it was successfully tested in two outdoor campaigns where an automatic recognition of areas containing explosives in traces had been implemented. The strategies for the identification of nitro-compounds placed on various substrates as fingerprints and the results obtained at a working distance of 10 m are discussed in the following.
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spelling pubmed-68061082019-11-07 Integrated Laser Sensor (ILS) for Remote Surface Analysis: Application for Detecting Explosives in Fingerprints Lazic, Violeta Palucci, Antonio De Dominicis, Luigi Nuvoli, Marcello Pistilli, Marco Menicucci, Ivano Colao, Francesco Almaviva, Salvatore Sensors (Basel) Article Here, we describe an innovative Integrated Laser Sensor (ILS) that combines four spectroscopic techniques and two vision systems into a unique, transportable device. The instrument performs Raman and Laser-Induced Fluorescence (LIF) spectroscopy excited at 355 nm and Laser-Induced Breakdown Spectroscopy (LIBS) excited at 1064 nm, and it also detects Laser Scattering (LS) from the target under illumination at 650 nm. The combination of these techniques supplies information about: material change from one scanning point to another, the presence of surface contaminants, the molecular and elemental composition of top target layers. Switching between the spectroscopic techniques and the laser wavelengths is fully automatic. The instrument is equipped with an autofocus and it performs scanning with a chosen grid density over an interactively-selected target area. Alternative to the spectroscopic measurements, it is possible to switch the instrument to a high magnification target viewing. The working distances tested until now are between 8.5 and 30 m. The instrument is self-powered and remotely controlled via wireless communication. The ILS has been fully developed at ENEA for security applications and it was successfully tested in two outdoor campaigns where an automatic recognition of areas containing explosives in traces had been implemented. The strategies for the identification of nitro-compounds placed on various substrates as fingerprints and the results obtained at a working distance of 10 m are discussed in the following. MDPI 2019-10-01 /pmc/articles/PMC6806108/ /pubmed/31581543 http://dx.doi.org/10.3390/s19194269 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Lazic, Violeta
Palucci, Antonio
De Dominicis, Luigi
Nuvoli, Marcello
Pistilli, Marco
Menicucci, Ivano
Colao, Francesco
Almaviva, Salvatore
Integrated Laser Sensor (ILS) for Remote Surface Analysis: Application for Detecting Explosives in Fingerprints
title Integrated Laser Sensor (ILS) for Remote Surface Analysis: Application for Detecting Explosives in Fingerprints
title_full Integrated Laser Sensor (ILS) for Remote Surface Analysis: Application for Detecting Explosives in Fingerprints
title_fullStr Integrated Laser Sensor (ILS) for Remote Surface Analysis: Application for Detecting Explosives in Fingerprints
title_full_unstemmed Integrated Laser Sensor (ILS) for Remote Surface Analysis: Application for Detecting Explosives in Fingerprints
title_short Integrated Laser Sensor (ILS) for Remote Surface Analysis: Application for Detecting Explosives in Fingerprints
title_sort integrated laser sensor (ils) for remote surface analysis: application for detecting explosives in fingerprints
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6806108/
https://www.ncbi.nlm.nih.gov/pubmed/31581543
http://dx.doi.org/10.3390/s19194269
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