TY - CONF

T1 - Multi-colorimetric sensor array for detection of explosives in gas and liquid phase

A1 - Kostesha,Natalie

A1 - Alstrøm,Tommy Sonne

A1 - Johnsen,C.

A1 - Nielsen,K. A.

A1 - Jeppesen,J. O.

A1 - Larsen,Jan

A1 - Boisen,Anja

A1 - Jakobsen,Mogens Havsteen

AU - Kostesha,Natalie

AU - Alstrøm,Tommy Sonne

AU - Johnsen,C.

AU - Nielsen,K. A.

AU - Jeppesen,J. O.

AU - Larsen,Jan

AU - Boisen,Anja

AU - Jakobsen,Mogens Havsteen

PB - S P I E - International Society for Optical Engineering

PY - 2011

Y1 - 2011

N2 - 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.

AB - 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.

KW - Principal component analysis

KW - Colorimetric sensor array

KW - HMX

KW - Chemo-selective compounds

KW - DNT

KW - RDX

KW - TATP

U2 - 10.1117/12.883895

DO - 10.1117/12.883895

JO - Proceedings of the SPIE - The International Society for Optical Engineering

JF - Proceedings of the SPIE - The International Society for Optical Engineering

SN - 1605-7422

VL - 8018

SP - 80181H

ER -