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Library free bulk detection of explosives - Combining simple sensors for resolving a complicated issue

Konstantynovski, Kostyantin and Hammer, Christof and Njio, Gerald and Wenzel, Niklas and Ramirez Agudelo, Oscar Hernan and Holl, Gerhard and Klapötke, Thomas M. (2021) Library free bulk detection of explosives - Combining simple sensors for resolving a complicated issue. Sensors and Actuators B-Chemical. Elsevier. doi: 10.1016/j.snb.2021.130559. ISSN 0925-4005.

Full text not available from this repository.

Abstract

Based on previous work a robust, mobile and fully functional prototype of a detector for energetic materials was developed. The prototype works in a library free manner - it detects explosives regardless of the analyte's chemical nature. Based on 170 experiments a detection rate of 99,4 % was reached. The detection algorithm was based on 13 explosive and 4 benign materials. The explosives were chosen to cover most common chemical classes and the benign materials included the ones which could easily be mistaken for explosives either optically or by their chemical constitution. In additional experiments, the possibility of library free and automatized operation was proven. Those experiments were performed in a double-blind mode and resulted in 9 of 10 right assignments (8 energetic materials and one benign) and 1 false positive. Sophisticated modular electronics allows quick exchange of sensors in case of malfunction or for experimental reasons. The application of custom metal oxide semiconductor gas sensors has not only the potential for significant power saving and therefore for making the prototypical detection-device suitable for mobile, battery powered application but additionally shortens the detection procedure runtime remarkably while still maintaining a close to 100 % detection rate, thus bringing the detector prototype one step closer to the market. Additional information about the chemical class of the analyzed substance can also be acquired, which can be a crucial advantage for first responders.

Item URL in elib:https://elib.dlr.de/143581/
Document Type:Article
Title:Library free bulk detection of explosives - Combining simple sensors for resolving a complicated issue
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Konstantynovski, KostyantinKostyantin.Konstantynovski (at) dlr.dehttps://orcid.org/0000-0003-2572-6062
Hammer, Christofchristof.hammer (at) dlr.deUNSPECIFIED
Njio, GeraldUniversity of Applied Sciences Bonn-Rhein-Sieg, Institute for Detection Technologies IDTUNSPECIFIED
Wenzel, NiklasUniversity of Applied Sciences Bonn-Rhein-Sieg, Institute for Detection Technologies IDTUNSPECIFIED
Ramirez Agudelo, Oscar HernanOscar.RamirezAgudelo (at) dlr.deUNSPECIFIED
Holl, Gerhardgerhard.holl (at) dlr.deUNSPECIFIED
Klapötke, Thomas M.Ludwig-Maximilian’s University Munich, Department of ChemistryUNSPECIFIED
Date:4 August 2021
Journal or Publication Title:Sensors and Actuators B-Chemical
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI :10.1016/j.snb.2021.130559
Publisher:Elsevier
ISSN:0925-4005
Status:Published
Keywords:Explosives, Bulk detection, Improvised explosive devices, Physical sensors, Gas sensors, Library free detection
HGF - Research field:other
HGF - Program:other
HGF - Program Themes:other
DLR - Research area:no assignment
DLR - Program:no assignment
DLR - Research theme (Project):no assignment
Location: Rhein-Sieg-Kreis
Institutes and Institutions:Institute for the Protection of Terrestrial Infrastructures
Deposited By: Konstantynovski, Dr. Kostyantin
Deposited On:24 Aug 2021 09:30
Last Modified:24 Aug 2021 09:30

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