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Open AccessFeature PaperArticle

Solid-State Gas Sensors: Sensor System Challenges in the Civil Security Domain

by 1,2,*,†, 2,†, 2,3,† and 2,†
1
Department of Applied Sciences and Mechatronics, Munich University of Applied Sciences, Lothstraße 34, München D-80335, Germany
2
Airbus Group Innovations, Munich D-81663, Germany
3
Infineon Technologies, Wernerwerkstraße 2, Regensburg D-93049, Germany
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Academic Editor: Elisabetta Comini
Materials 2016, 9(1), 65; https://doi.org/10.3390/ma9010065
Received: 31 August 2015 / Revised: 11 January 2016 / Accepted: 12 January 2016 / Published: 20 January 2016
(This article belongs to the Special Issue Nanostructured Materials for Chemical Sensing Applications)
The detection of military high explosives and illicit drugs presents problems of paramount importance in the fields of counter terrorism and criminal investigation. Effectively dealing with such threats requires hand-portable, mobile and affordable instruments. The paper shows that solid-state gas sensors can contribute to the development of such instruments provided the sensors are incorporated into integrated sensor systems, which acquire the target substances in the form of particle residue from suspect objects and which process the collected residue through a sequence of particle sampling, solid-vapor conversion, vapor detection and signal treatment steps. Considering sensor systems with metal oxide gas sensors at the backend, it is demonstrated that significant gains in sensitivity, selectivity and speed of response can be attained when the threat substances are sampled in particle as opposed to vapor form. View Full-Text
Keywords: explosives; drugs; gas sensor; electrostatic precipitation; solid-vapor conversion; surface ionization explosives; drugs; gas sensor; electrostatic precipitation; solid-vapor conversion; surface ionization
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MDPI and ACS Style

Müller, G.; Hackner, A.; Beer, S.; Göbel, J. Solid-State Gas Sensors: Sensor System Challenges in the Civil Security Domain. Materials 2016, 9, 65. https://doi.org/10.3390/ma9010065

AMA Style

Müller G, Hackner A, Beer S, Göbel J. Solid-State Gas Sensors: Sensor System Challenges in the Civil Security Domain. Materials. 2016; 9(1):65. https://doi.org/10.3390/ma9010065

Chicago/Turabian Style

Müller, Gerhard; Hackner, Angelika; Beer, Sebastian; Göbel, Johann. 2016. "Solid-State Gas Sensors: Sensor System Challenges in the Civil Security Domain" Materials 9, no. 1: 65. https://doi.org/10.3390/ma9010065

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