Wearable Gas Sensor Arrays for Real-Time Health and Safety Monitoring

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• Professor Andrew Mason, Michigan State University, USA
• Monday 02 September 2013, 14:00-15:00
• Dennis Gabor Seminar Room (611), EEE Department.

If you have a question about this talk, please contact Timothy G Constandinou.

Exposure to air pollution consistently ranks among the leading causes of illness and mortality globally, and exposure to dangerous (toxic or explosive) gases at home and work is a rising concern as we surround ourselves with new engineered materials and dig deeper into the earth to fuel worldwide demand for limited resources. To prevent exposure to hazardous gases, new tools are needed that can quickly and accurately measure acute gas concentrations around individuals as they are mobile across variable environmental conditions. A cost-effective wearable personal monitoring device could provide real-time data collection over a wide spatial distribution, yielding large data sets to study and model the health impacts of exposure and ultimately aid in effective preventative measures and treatments. However, realization of such a multi-gases monitor in an affordable, wearable, highly autonomous platform requires a challenging combination of performance, size, power, and cost that is difficult to achieve with existing gas sensor technologies.

This talk will describe a new gas sensor platform for personal health and safety monitoring that incorporates room temperature ionic-liquid (RTIL) sensing materials, electrochemical measurement techniques, CMOS instrumentation electronics, and sensor array processing algorithms. A miniaturized RTIL electrochemical gas sensor array was developed to provide rapid and selective response to multiple hazardous gases in real time. The arrays were incorporated into a prototype intelligent electrochemical gas analysis system (iEGAS) that includes environmental sensors, electronics for amperometry and impedance spectroscopy methods, and a microcontroller for array signal processing and system control. To further miniaturize the multi-gas system, development of a next generation CMOS monolithic gas sensor microsystem is being explored.

Brief Biography: Andrew J. Mason received the BS in Physics with highest distinction from Western Kentucky University in 1991, the BSEE with honors from the Georgia Institute of Technology in 1992, and the MS and Ph.D. in Electrical Engineering from The University of Michigan, Ann Arbor in 1994 and 2000, respectively. He is currently an Associate Professor in the Department of Electrical and Computer Engineering at Michigan State University, East Lansing, Michigan. His research explores mixed-signal circuits and microfabricated structures for integrated microsystems in biomedical and environmental monitoring applications. Current projects include wearable/implantable electrochemical and bioelectronic sensors systems, microfabricated electrochemical sensor arrays, array signal processing algorithms and hardware, and post-CMOS integration of sensing, instrumentation, and microfluidics. Dr. Mason is a Senior Member of the Institute of Electrical and Electronic Engineers (IEEE), an Associate Editor for the IEEE Trans. Biomedical Circuit and Systems, on the editorial board for the journal BioNanoScience, and was co-General Chair of the 2011 IEEE Biomedical Circuits and Systems Conference. He is a recipient of the 2006 Michigan State University Teacher-Scholar Award and the 2010 Withrow Award for Teaching Excellence.

This talk is part of the Centre for Bio-Inspired Technology talks series.

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