Share Email Print
cover

Proceedings Paper

Nitroaromatic explosive vapor detection using a digitally printed sensor array (Conference Presentation)
Author(s): Carsten Eschenbaum; Nico Bolse; Ralph Eckstein; Tobias Rödlmeier; Anne Habermehl; Gerardo Hernandez-Sosa; Ulrich Lemmer
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

We report on a fluorescent optoelectronic nose for the trace detection of nitroaromatic explosive vapors. The sensor arrays, fabricated by aerosol-jet printing, consist of six different polymers as transducers. We demonstrate the nose’s ability to discriminate between several nitroaromatics including nitrobenzene, 1,3-dinitrobenzene and 2,4-dinitrotoluene at three different concentrations using linear discriminant analysis (LDA). We assess the within-batch reproducibility of the printing process and we report that the sensor polymers show efficient fluorescence quenching capabilities with detection limits of a few parts-per-billion in air. Our approach enables the realization of highly integrated optical sensor arrays in optoelectronic noses for the sensitive and selective detection of nitroaromatic explosive trace vapors using a potentially low-cost digital printing technique suitable for high-volume fabrication. An important challenge is temperature-dependence which is often neglected even though organic emitters are strongly affected by temperature. For some materials, even small changes of a few Kelvin can lead to large changes in the emission intensity making a temperature-control for sensing applications inevitable. Therefore, the temperature-dependence of these sensors is investigated via a heated transparent thin film on the back of such sensors allowing the active layer to be temperature controlled. All of these led to the development of a portable system.

Paper Details

Date Published: 19 September 2017
PDF
Proc. SPIE 10364, Organic Sensors and Bioelectronics X, 103640C (19 September 2017); doi: 10.1117/12.2274239
Show Author Affiliations
Carsten Eschenbaum, Lichttechnisches Institut, Karlsruher Institut für Technologie (Germany)
InnovationLab GmbH (Germany)
Institut für Mikrostrukturtechnik, Karlsruher Institut für Technologie (Germany)
Nico Bolse, Lichttechnisches Institut, Karlsruher Institut für Technologie (Germany)
Ralph Eckstein, Lichttechnisches Institut, Karlsruher Institut für Technologie (Germany)
InnovationLab GmbH (Germany)
Tobias Rödlmeier, Lichttechnisches Institut, Karlsruher Institut für Technologie (Germany)
InnovationLab GmbH (Germany)
Anne Habermehl, Lichttechnisches Institut, Karlsruher Institut für Technologie (Germany)
Gerardo Hernandez-Sosa, Lichttechnisches Institut, Karlsruher Institut für Technologie (Germany)
InnovationLab GmbH (Germany)
Ulrich Lemmer, Lichttechnisches Institut, Karlsruher Institut für Technologie (Germany)
InnovationLab GmbH (Germany)
Institut für Mikrostrukturtechnik, Karlsruher Institut für Technologie (Germany)


Published in SPIE Proceedings Vol. 10364:
Organic Sensors and Bioelectronics X
Ioannis Kymissis; Ruth Shinar; Luisa Torsi, Editor(s)

© SPIE. Terms of Use
Back to Top