Supplement: IEEE 2011 Conference on Technology for Homeland Security: Best Papers
Awarded Best Paper, Biometrics, Forensics, and Physical Security Track.
Self-curing polysiloxane polymers have been developed for the forensic collection of latent signatures of explosives, organophosphates, and chemical warfare agent (CWA) degradation products. These polymeric materials penetrate the sample substrate as viscous liquids and subsequently harden to a semi-soft solid that can be peeled away from the substrate to extract signatures via the non-covalent interaction of the newly formed polymeric material with the analytes buried within the substrate. This paper discusses experiments aimed at altering the chemical and physical properties of the polysiloxane sampling materials to optimize signature recovery from porous substrates. The utility of this approach is demonstrated by the collection of target analytes from within concrete. The recovery of these signatures using the self curing polymeric formulations is compared to current operational sampling alternatives such as adhesive fingerprint lifters and swabs. Demonstration of the preparation, extraction, and analytical methods for the detection of the target analytes is also presented.
Chipuk, Joseph et al. “Tunable, Self-curing Polymers for the Forensic Collection of Latent Signatures from Within Porous Materials.” Homeland Security Affairs, IEEE 2011 Conference on Technology for Homeland Security: Best Papers (May 2012). https://www.hsaj.org/articles/219
This article was originally published at the URL https://www.hsaj.org/?article=0.5.5.