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A Novel Electrochemical CO2 Sensor Utilizing Room Temperature Ionic Liquids by Dr. Shalini Prasad (UTD)
Friday, May 19
1 p.m. - 2 p.m. Location: ECSS 3.503

Next generation CO2 gas sensors require discrimination sensitivity between ambient CO2 and elevated CO2 and invariance with regards to CO2 detection and environmental factors. For this study, we report and discuss the effective application of room temperature ionic liquids (RTILs) towards the development of a stable electrochemical CO2 sensor that provides increased valuation towards commercial applications. Some studies revealed that RTILs can be useful as electrolytes in batteries, electrochemical cells, and electroplating. However, they have been recently used also in construction of electrochemical sensors. An electrochemical sensor is an analytical device, which converts a chemical response into an electrical signal. Most of the sensors are used in electrochemical measurements and have ability to modify with ionic liquids. Analysis of the RTIL electrochemical behavior in conjunction with CO2  has aided in the identification of robust combinations of RTIL/electrode towards environmental CO2 sensors. We have investigated RTILs of varying anionic moieties on micro surfaces using electrochemical impedance spectroscopy (EIS) and Chronoamperometry, we compare and contrast the initial response behaviors for these RTILs for these sensors.

Shalini Prasad is a Professor in the Department of Bioengineering and Biomedical Engineering graduate program. She has been with The University of Texas at Dallas since 2011. She also holds adjunct appointments in the Departments of Materials Science and Physics at the University of Texas, Dallas and at the Department of Surgery at the University of Texas Southwestern Medical Center. She received her Bachelor's degree in Electronics and Communication Engineering from the University of Madras, India in 2000 and obtained her Ph.D. degree in Electrical Engineering from University of California, Riverside in 2004.

Prior to UT Dallas, she worked at Portland State University, Arizona State University and Wichita State University. Among many other honors, she was awarded with Bomhoff Distinguished Professor and Cecil and Ida Green Professor endowment in Bioengineering and Systems Biology. Dr. Prasad is currently the Director of Biomedical Microdevices and Nanotechnology Laboratory, which primarily focuses on multi-disciplinary research work in the areas of biosensors and bioelectronics which encompass wearable sensors, point-of-care technologies, lab-on-a-chip based devices and gas sensors. Her research focus spans multiple scales spanning from molecules and to systems.

Contact Info:
Donna Kuchinski, 972-883-5556
Questions? Email me.

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