Rogers, P.
and Semancik, S.
(2011),
Feedback-Enabled Discrimination and Classification Enhancement for Temperature Programmed Chemiresistive Microsensors, Sensors and Actuators B-Chemical, [online], https://doi.org/10.1016/j.snb.2011.05.051, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=907941
(Accessed November 19, 2025)
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Feedback-Enabled Discrimination and Classification Enhancement for Temperature Programmed Chemiresistive Microsensors
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Abstract
A method for correcting heater drift through operational feedback has been implemented during the acquisition of condition-dependent response data on a single mocrohotplate-based chemiresistive sensing element. The element included 30 nm chemical vapor deposited thin film of SnO2, formed over the interdigitated Pt electrodes, which acted as the transduction interface. Gas exposure experiments were performed using sub 100 ppm concentrations of methanol and ethane over backgrounds of dry air and 15% relative humidity air. Removing temperature drift is shown to significantly decrease sensing signal drift, thereby facilitating enhanced target classification. Since this approach represents an operational adjustment, similar performance benefits are expected for sensing devices based upon other chemiresistive materials.Citation
Sensors and Actuators B-Chemical
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Journals
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Keywords
Chemiresistor, Microheater, Microsensor, Sensor drift
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Created June 2, 2011, Updated August 29, 2025