Trace chemical detection in air using electronic noses and nano-structured sensing materials

Kurt D. Benkstein; Christopher B. Montgomery; Stephen Semancik

doi:10.1117/12.2067312

11 June 2014 Trace chemical detection in air using electronic noses and nano-structured sensing materials

Kurt D. Benkstein, Christopher B. Montgomery, Stephen Semancik

Proceedings Volume 9083, Micro- and Nanotechnology Sensors, Systems, and Applications VI; 90830X (2014) https://doi.org/10.1117/12.2067312
Event: SPIE Defense + Security, 2014, Baltimore, MD, United States

Abstract

For a variety of application areas, including homeland defense, environmental and health monitoring and emergency response, the detection of gas-phase chemicals is of great interest. One approach to these challenging sensing tasks is to use arrays of broadly selective chemical sensors as an electronic nose. In this presentation, we describe recent research at NIST, which employs multi-element microscale chemiresistor arrays populated with varied (chemically and morphologically) sensing materials. Furthermore, we modulate the operating temperature of the microsensors on millisecond timescales to enable increased selectivity for the detection of several volatile organic compounds in air at varied concentrations less than 100 μmol/mol.

Citation Download Citation

Kurt D. Benkstein, Christopher B. Montgomery, and Stephen Semancik "Trace chemical detection in air using electronic noses and nano-structured sensing materials", Proc. SPIE 9083, Micro- and Nanotechnology Sensors, Systems, and Applications VI, 90830X (11 June 2014); https://doi.org/10.1117/12.2067312

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