Detection of explosive materials, even in very limited concentration, is a big challenge because of terrorist attacks. For that reason, we are proposing a novel system, based on complex structure of advanced materials, which, at the end, will allow fast, easy, precise and cheap detection of explosives. The main challenge is to prepare compact sensors suitable for detection the energetic materials - explosives and compounds used for their fabrication in sewage and in suspected unauthorized dumpsites at low concentrations.
The latest data suggests that IEDs have killed or maimed more than 53,000 civilians over the past three years during incidents (70% increase worldwide when comparing 2014 to 2011). But, there is still “no tech solution for civilian IED threats and detection continues to remain a significant challenge” - IEEE Spectrum (2014) interview with Barry Shoop, a colonel in the U.S. Army Signal Corps and a professor at the U.S. Military Academy at West Point. From detection, or if you think about it, from a sensing perspective, the challenge is really a series of weak component signatures in an incredibly complex background environment.
To achieve such a low limit of detection (LOD) and selectivity the authors propose the use of new, multimodal detection systems based of mutually independent and complementary applied methods: optical spectroscopic techniques and electrochemical current-voltage measurements in DC and AC mode. The combination of optical detection with simultaneous electrochemical measurement will allow increase in sensitivity demanded in the analysis of samples with low content of analytes.