Conference paper
Multi-colorimetric sensor array for detection of explosives in gas and liquid phase
Department of Micro- and Nanotechnology, Technical University of Denmark1
Cognitive Systems, Department of Informatics and Mathematical Modeling, Technical University of Denmark2
Department of Informatics and Mathematical Modeling, Technical University of Denmark3
University of Southern Denmark4
Nanoprobes Group, NanoSystemsEngineering Section, Department of Micro- and Nanotechnology, Technical University of Denmark5
NanoSystemsEngineering Section, Department of Micro- and Nanotechnology, Technical University of Denmark6
Surface Engineering Group, Polymer Micro and Nano Engineering Section, Department of Micro- and Nanotechnology, Technical University of Denmark7
Polymer Micro and Nano Engineering Section, Department of Micro- and Nanotechnology, Technical University of Denmark8
In the framework of the research project "Xsense" at the Technical University of Denmark (DTU) we are developing a simple colorimetric sensor array which can be useful in detection of explosives like DNT, TATP, HMX, RDX and identification of reagents needed for making homemade explosives. The technology is based on an array of chemoselective compounds immobilized on a solid support.
Upon exposure to the analyte in suspicion the colorimetric array changes color. Each chosen compound reacts chemo-selectively with analytes of interest. A change in a color signature indicates the presence of unknown explosives and volatile organic compounds (VOCs). We are working towards the selection of compounds that undergo color changes in the presence of explosives and VOCs, as well as the development of an immobilization method for the molecules.
Digital imaging of the colorimetric array before and after exposure to the analytes creates a color difference map which gives a unique fingerprint for each explosive and VOCs. Such sensing technology can be used for screening relevant explosives in a complex background as well as to distinguish mixtures of volatile organic compounds distributed in gas and liquid phases.
This sensor array is inexpensive, and can potentially be produced as single use disposable.
Language: | English |
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Year: | 2011 |
Pages: | 80181H-12 |
Proceedings: | Chemical, Biological, Radiological, Nuclear, and Explosives Sensing |
ISSN: | 1996756x and 0277786x |
Types: | Conference paper |
DOI: | 10.1117/12.883895 |
ORCIDs: | Alstrøm, Tommy Sonne , Larsen, Jan , Boisen, Anja and Jakobsen, Mogens Havsteen |