6.4.1 Trace Explosive Vapor Detection Using Silicon Nanowires in a Vertical Array with a Porous Electrode
- 14th International Meeting on Chemical Sensors - IMCS 2012
2012-05-20 - 2012-05-23
- 6.4 Sensors for Explosives
- C. Field, C. Tamanaha, S. Rose-Pehrsson, P. Pehrsson - Naval Research Laboratory, Chemistry Division (USA), H. In - National Research Council, Post-Doctoral Research Associate (USA)
- 551 - 552
The proliferation of improvised explosive devices (IEDs) and recent terrorist attempts like the infamous Shoe Bomber, Underwear Bomber, and Toner Cartridge Plot have demonstrated a significant need for portable and sensitive sensors for detection of explosive vapors. The Silicon Nanowires in a Vertical Array with a Porous Electrode (SiN-VAPOR) architecture has been developed to address this need with parts-per-billion detection limits for nitroaromatics, such as dinitrotoluene and trinitrotoluene (TNT). An initial slope method has been used to establish calibration curves for model compounds like nitrogen dioxide and ammonia and provides a mechanism for obtaining quantitative results with the SiN-VAPOR sensor.