1.4.6 Microsensors for Mars: Trace Analyte Detection in a Simulated Martian Environment

Kurt D. Benkstein, Philip H. Rogers, Christopher B. Montgomery, Steve Semancik, Jerry Jin & Baranidharan Raman
Chemiresistive microsensor arrays are being developed and tested in a simulated Martian environment. Target analyte species include trace small molecules that may indicate current geological or, potentially, biological activity on Mars. The sensing films are based upon robust, nano-structured metal oxide materials, including doped and undoped tin oxide, tungsten oxide and indium oxide. In combination with dynamic operating temperatures and advanced signal processing, we show in this presentation the capabilities of the microsensor arrays for...