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Updated: May 16, 2026

Microfluidic Picoliter Bioreactor for Microbial Single-cell Analysis: Fabrication, System Setup, and Operation

Microfluidic Picoliter Bioreactor for Microbial Single-cell Analysis: Fabrication, System Setup, and Operation

Published on: December 6, 2013

A nanoliter-scale open chemical reactor.

Jean-Christophe Galas¹, Anne-Marie Haghiri-Gosnet, André Estévez-Torres

¹Laboratoire de photonique et de nanostructures, CNRS, Marcoussis, France. Jean-Christophe.Galas@lpn.cnrs.fr

|December 11, 2012

Summary

Researchers developed a microfluidic continuous stirred tank reactor (μCSTR) significantly reducing reagent use. This innovation enables new studies of complex chemical dynamics, especially with biomolecules.

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Area of Science:

Chemical Engineering
Physical Chemistry
Microfluidics

Background:

Continuous stirred tank reactors (CSTRs) are crucial for studying chemical dynamics like oscillations and chaos.
Traditional CSTRs require substantial reagent volumes, limiting investigations with expensive or sensitive molecules.
A miniaturized CSTR has been unavailable for studying complex chemical processes.

Purpose of the Study:

To introduce a microfluidic continuous stirred tank reactor (μCSTR) for reduced reagent consumption.
To enable the investigation of out-of-equilibrium chemical dynamics, particularly involving biomolecules.
To provide a platform for studying complex chemical phenomena with significantly lower material costs.

Main Methods:

Fabrication of a μCSTR using multi-layer soft lithography in PDMS.
Integration of a monolithic peristaltic pump system for reagent injection and mixing.
Experimental characterization using a bromate, sulfite, ferrocyanide pH oscillator system.
Simulations incorporating digital injection processes to validate experimental findings.

Main Results:

The μCSTR demonstrated a reduction in reagent consumption by six orders of magnitude compared to conventional CSTRs.
Experimental results using the pH oscillator system validated the μCSTR's efficiency and performance.
Simulations accurately predicted experimental outcomes, confirming the model's reliability.

Conclusions:

The developed μCSTR is an efficient and highly economical tool for studying chemical dynamics.
Its low reagent consumption makes it ideal for investigating complex out-of-equilibrium processes involving biomolecules.
This miniaturized CSTR opens new avenues for research previously limited by resource constraints.