From Zero- to First-Order Gas Sensors: Anticipated and Unanticipated Advances

#Sensors #Gas #Multivariable #RF #Optical
Share

Virtual presentation by Dr. Radislav A. Potyrailo from GE Research

 

Abstract:

Conventional gas sensors are designed as zero-order analytical instruments with a single-output response (e.g. resistance, current, light intensity). Under variable ambient conditions such sensors suffer from cross-sensitivity from interferent gases and from fluctuations (drift) of their response because single-output sensor designs mathematically do not allow gas-selectivity and/or drift correction. We break this status quo by developing a new generation of gas sensors, known as multivariable sensors with several independent responses. By our designs, these sensors are first-order analytical instruments. In this talk, we will show that individual multivariable gas sensors quantify several gases and reject interferences, which is mathematically not feasible using conventional sensor designs. Next, we will show that such multivariable gas sensors have the ability for self-correction for sensor drift. Our multivariable gas sensors operate in the radio-frequency (RF) and optical portions of the electromagnetic spectrum. We self-correct for the baseline drift by sensor operation at more than one frequency of wavelength. Our approach for the drift self-correction should allow implementations of gas sensors in diverse applications that cannot afford weekly, monthly, or quarterly periodic maintenance, typical of traditional analytical instruments.


  Date and Time

  Location

  Hosts

  Registration


  • Date: 23 Feb 2023
  • Time: 02:30 AM UTC to 04:00 AM UTC
  • Add_To_Calendar_icon Add Event to Calendar
If you are not a robot, please complete the ReCAPTCHA to display virtual attendance info.
  • SCV/SF/OEB Jt. Section Chapter, SEN39
  • Contact Event Host

  • Jeronimo Segovia-Fernandez

    Chair, IEEE MEMS & Sensors SFBA Chapter

    http://sites.ieee.org/scv-mems/ 

  • Starts 06 February 2023 04:07 PM UTC
  • Ends 23 February 2023 02:30 AM UTC
  • No Admission Charge
  • Menu: IEEE Member, Non-IEEE Member

  Speakers

Dr. Radislav A. Potyrailo Dr. Radislav A. Potyrailo

Biography:

Radislav Potyrailo is a Principal Scientist at GE Research, directing numerous programs in the broad areas of sensors. His passion is to bring his sensing concepts from TRL1 to TRL9.  Two illustrative examples of his sensors include (1) optical system for multi-ion monitoring of industrial water commercialized by GE Water and recognized by the Prism Award by SPIE / Photonics Media in 2011 and (2) networked sensor system for greenhouse gas monitoring commercialized by Baker Hughes GE and recognized by Innovation Award from the Association for Sensor and Measurement Technology in 2021. Radislav summarized some of his innovations in 150+ granted US Patents and numerous publications (Google Scholar h-index = 50+).  He is SPIE Fellow (2011) and recent IEEE Fellow (2023), covering the whole electromagnetic spectrum of his sensors.

Address:United States




Agenda

6:30 – 6:50 PM Zoom Registration & Networking

6:50 – 7:00 PM Announcements & Polling

7:00 – 7:45 PM Invited Talk

7:45 – 8:00 PM Questions & Answers