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Open AccessArticle
Control Circuits for Potentiostatic/Galvanostatic Polarization and Simultaneous Chemical Sensing by a Light-Addressable Potentiometric Sensor
by
Tatsuo Yoshinobu
Tatsuo Yoshinobu
Tatsuo Yoshinobu received his Master’s degree from Kyoto University in 1989 and his PhD degree the [...]
Tatsuo Yoshinobu received his Master’s degree from Kyoto University in 1989 and his PhD degree from the same University in 1992. In 1992, he joined the Institute of Scientific and Industrial Research, Osaka University, where he started the development of silicon-based chemical sensors. From 1999 to 2000, he was a guest scientist at the Research Centre Jülich, Germany. Since 2005, he has been a professor of electronic engineering at Tohoku University. Since 2008, he has also been a professor at the Graduate School of Biomedical Engineering, Tohoku University.
1,*
,
Rintaro Ikeda
Rintaro Ikeda 2 and
Ko-ichiro Miyamoto
Ko-ichiro Miyamoto 2
1
Department of Biomedical Engineering, Tohoku University, Sendai 980-8579, Japan
2
Department of Electronic Engineering, Tohoku University, Sendai 980-8579, Japan
*
Author to whom correspondence should be addressed.
Sensors 2024, 24(17), 5666; https://doi.org/10.3390/s24175666 (registering DOI)
Submission received: 16 July 2024
/
Revised: 27 August 2024
/
Accepted: 29 August 2024
/
Published: 30 August 2024
Abstract
A light-addressable potentiometric sensor (LAPS) is a semiconductor-based sensor platform for sensing and imaging of various chemical species. Being a potentiometric sensor, no faradaic current flows through its sensing surface, and no electrochemical reaction takes place in the course of LAPS measurement. In this study, a four-electrode system is proposed, in which a LAPS is combined with the conventional three-electrode electrochemical system. A LAPS is included as the fourth electrode for potentiometric sensing and imaging of the target analyte in the course of an electrochemical reaction taking place on the surface of the working electrode. The integrated system will be useful for analyzing dynamic processes, where both the electrochemical process on the electrode surface and the ion distribution in the solution need to be simultaneously investigated. Different grounding modes of control circuits that can simultaneously conduct potentiostatic/galvanostatic polarization and LAPS measurement are designed, and their functionalities are tested. The interference between polarization and LAPS measurement will also be discussed.
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MDPI and ACS Style
Yoshinobu, T.; Ikeda, R.; Miyamoto, K.-i.
Control Circuits for Potentiostatic/Galvanostatic Polarization and Simultaneous Chemical Sensing by a Light-Addressable Potentiometric Sensor. Sensors 2024, 24, 5666.
https://doi.org/10.3390/s24175666
AMA Style
Yoshinobu T, Ikeda R, Miyamoto K-i.
Control Circuits for Potentiostatic/Galvanostatic Polarization and Simultaneous Chemical Sensing by a Light-Addressable Potentiometric Sensor. Sensors. 2024; 24(17):5666.
https://doi.org/10.3390/s24175666
Chicago/Turabian Style
Yoshinobu, Tatsuo, Rintaro Ikeda, and Ko-ichiro Miyamoto.
2024. "Control Circuits for Potentiostatic/Galvanostatic Polarization and Simultaneous Chemical Sensing by a Light-Addressable Potentiometric Sensor" Sensors 24, no. 17: 5666.
https://doi.org/10.3390/s24175666
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