Orthogonal Sensors for Trace Detection
Overview and Significance
Currently, a portable explosives trace detection (ETD) system, capable of continuously monitoring peroxide-based and nitrogen-based explosives, is not available. Therefore, providing such a capability to the Homeland Security Enterprise is the goal of this research. Our ETD system, essentially a “digital dog nose” in its final form, will be small enough to be easily transported from place to place and will have the selectivity and sensitivity (detection limits) of a dog’s nose. This passive, non-invasive ETD system will provide a complementary tool to the existing Homeland Security Enterprise (HSE) toolbox, that would add to technologies currently available for screening purposes.
Detection and, more importantly, identification of explosives in the vapor phase is a difficult task. One of the most important challenges in trace detection that our sensor addresses is false positives and false negatives. To mitigate these false signals, libraries of characteristic signatures using our thermodynamic and conductometric sensing platforms will be generated as part of our continued effort to expand the library of threats. As a result, our sensor responses are not only redundant but are orthogonal as well.
[A] strength of the project is the ability to detect both nitrogen-based and peroxide-based explosives, making it a valuable addition to existing detection techniques available to the Homeland Security Enterprise.Phase 2, Year 3 Annual Report
Otto J. Gregory
URI Center for Sensor and Instrumentation Research
Faculty and Staff Currently Involved in Project
Students Currently Involved in Project
- Mitch Champlin
- Elizabeth Shokunbi
- Jimmy Chan
- Zach Caron
- Vivek Patel