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In a time when homemade explosive devices are being used against soldiers and in the homeland security environment,
it is becoming increasingly evident that there is an urgent need for high-tech chemical sensor packages to be mounted
aboard ground and air vehicles to aid soldiers in determining the location of explosive devices and the origin of bio-chemical
warfare agents associated with terrorist activities from a safe distance. Current technologies utilize relatively
large handheld detection systems that are housed on sizeable robotic vehicles. Research and development efforts are
underway at the Army Aviation & Missile Research, Development, and Engineering Center (AMRDEC) to develop
novel and less expensive nano-based chemical sensors for detecting explosives and chemical agents used against the
soldier. More specifically, an array of chemical sensors integrated with an electronics control module on a flexible
substrate that can conform to and be surface-mounted to manned or unmanned vehicles to detect harmful species from
bio-chemical warfare and other explosive devices is being developed. The sensor system under development is a
voltammetry-based sensor system capable of aiding in the detection of any chemical agent and in the optimization of
sensor microarray geometry to provide nonlinear Fourier algorithms to characterize target area background (e.g.,
footprint areas). The status of the research project is reviewed in this paper. Critical technical challenges associated
with achieving system cost, size, and performance requirements are discussed. The results obtained from field tests
using an unmanned remote controlled vehicle that houses a CO2/chemical sensor, which detects harmful chemical agents
and wirelessly transmits warning signals back to the warfighter, are presented. Finally, the technical barriers associated
with employing the sensor array system aboard small air vehicles will be discussed.
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