A Microfluidic Chip for Geoelectrical Monitoring of Critical Zone Processes

A Microfluidic Chip for Geoelectrical Monitoring of Critical Zone Processes

Flore Rembert, Arnaud Stolz, Cyprien Soulaine, Sophie Roman

Geoelectrical methods are commonly used to monitor dynamic processes (e.g. multi-phase flow, geochemical reactions, microbial activity) in the critical zone, i.e. the near-surface environment hosting drinking water and continental life. The interpretation of electrical measurements, however, is still a matter of controversy as the identification of the electrical signature of each underlying process is challenging. Scientists from the University of Orleans have miniaturized geoelectrical acquisition on microfluidic chips mimicking critical zone processes. Combined with high-resolution optical imaging, they identified the electrical signature of calcite dissolution. Assessing the contribution of processes will help to better monitor the critical zone using geophysics.

Lab Chip, 2023, Advance Article
Corresponding Author: Cyprien Soulaine

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