Dr Radislav Potyrailo, IEEE Sensors Council Distinguished Lecturer: "Next Generation of Gas Sensors: Anticipated and Unanticipated Advantages Over Last-Century Designs"
Next Generation of Gas Sensors: Anticipated and Unanticipated Advantages Over Last-Century Designs
It is conventionally expected that the performance of existing gas sensors may degrade in the field compared to laboratory conditions because (i) a sensor may lose its accuracy in the presence of chemical interferences and (ii) variations of ambient conditions over time may induce sensor-response fluctuations (i.e., drift). Breaking this status quo in poor sensor performance requires understanding the origins of design principles of existing sensors and bringing new principles to sensor designs. Existing gas sensors are singleoutput (e.g., resistance, electrical current, work function, light intensity) sensors, also known as zero-order sensors. Any zero-order sensor is undesirably affected by variable chemical background and sensor drift that cannot be distinguished from the response to an analyte. In this lecture, we will demonstrate that to address these limitations, multivariable gas sensors are emerging as the next generation reliable analytical devices. Multivariable gas sensors (also known as intelligent sensors, multiparameter sensors, high-order sensors, and virtual sensor arrays) are individual sensors that are designed with several independent responses and operate as the first-order analytical instruments. We will present results from our and other research teams that demonstrate three-dimensional, four-dimensional, and even five-dimensional dispersion of individual sensors, differentiation of complex odors and closely related volatiles, and quantification of analytes in mixtures. Next we will discuss recent reported methodologies to improve stability of multivariable sensors. Design principles of electrical and photonic types of first-order sensors open opportunities for diverse emerging monitoring applications that cannot afford relatively high electrical power demands, relatively high instrument acquisition cost, and frequent periodic maintenance, typical of traditional analytical instruments.
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- Booth St East
- Manchester, England
- United Kingdom M13 9PL
- Building: Nancy Rothwell (Engineering Building A)
- Room Number: 1A.023
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Biography:
Radislav A. Potyrailo is a Principal Scientist at GE Research. He received an Optoelectronics degree from Kyiv Polytechnic Institute (1985) and a PhD in Analytical Chemistry from Indiana University, Bloomington, IN (1998). At GE Research Dr. Potyrailo has been directing programs on designs of physical transducers, sensing materials with multi-response mechanisms, data analytics, and system engineering of microanalytical instrumentation. His passion is to bring innovative sensing systems from laboratory feasibility studies to field validations and commercialization. Dr. Potyrailo has been serving as a technical lead on GE R&D programs transitioned to GE businesses or GE partners for commercialization. Examples include optical multi-parameter chemical sensor for GE Water, wireless gas sensors for GE Oil & Gas, multi-parameter oil sensor for GE Renewable Energy, and GE Ventures start-up company on radio-frequency sensors. Dr. Potyrailo has been serving as a Principal Investigator on programs funded by AFRL, ARPA-E, DARPA, DHS, DOE, DTRA, NIH, NIOSH, NETL, TSWG, and other US Government agencies. He is the initiator and a co-organizer of the First Gordon Research Conference on Combinatorial and High Throughput Materials Science and serves as an editor of the Springer-Nature book series “Integrated Analytical Systems”. He is the North America Regional Chair of International Society for Olfaction and Chemical Sensing and is the Chair of the Device Working Group of the MEMS and Sensors Industry Group. Dr. Potyrailo summarized most of his innovations in 150+ granted US Patents and publications (Google Scholar h-index 50+). He is a recipient of the Prism Award by SPIE/Photonics Media (2011) for the development of a handheld sensor system for industrial water, commercialized by GE Water and the AMA Innovation Award (2021) for the development of networked greenhouse gas sensors, commercialized by BHGE. He is a SPIE Fellow (2011) for achievements in fundamental breakthroughs in optical sensing and innovative analytical systems and a recent IEEE Fellow (2023) for contributions to sensor technologies for gas differentiation, interference rejection, and drift elimination, covering the whole electromagnetic spectrum of his sensors.