Programmable Electrochemical Stimulation on a Large-Scale CMOS Microelectrode Array

In this paper we present spatio-temporally controlled electrochemical stimulation of aqueous samples using an integrated CMOS microelectrode array with 131,072 pixels. We demonstrate programmable gold electrodeposition in arbitrary spatial patterns, controllable electrolysis to produce microscale hy...

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Bibliographic Details
Published in2022 IEEE Biomedical Circuits and Systems Conference (BioCAS) Vol. 2022; pp. 439 - 443
Main Authors Joshi, Pushkaraj S., Hu, Kangping, Larkin, Joseph W., Rosenstein, Jacob K.
Format Conference Proceeding Journal Article
LanguageEnglish
Published United States IEEE 01.10.2022
Subjects
Bioelectric phenomena
bubble formation
Electrochemical deposition
electrolysis
Gold
Hydrogen
Microelectrode array
Microelectrodes
Microorganisms
Modulation
pH control
stimulation
pH control
electrolysis
Microelectrode array
bubble formation
stimulation
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DOI10.1109/BioCAS54905.2022.9948674

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Summary:In this paper we present spatio-temporally controlled electrochemical stimulation of aqueous samples using an integrated CMOS microelectrode array with 131,072 pixels. We demonstrate programmable gold electrodeposition in arbitrary spatial patterns, controllable electrolysis to produce microscale hydrogen bubbles, and spatially targeted electrochemical pH modulation. Dense spatially-addressable electrochemical stimulation is important for a wide range of bioelectronics applications.
DOI:10.1109/BioCAS54905.2022.9948674