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Related Experiment Video

Updated: Aug 13, 2025

Microfluidic Picoliter Bioreactor for Microbial Single-cell Analysis: Fabrication, System Setup, and Operation
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Electrolysis of Bacteria Based on Microfluidic Technology.

Jianqiu Zhao1, Na Li1, Xinyu Zhou1

  • 1Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, School of Life Sciences, Jilin University, Changchun 130012, China.

Micromachines
|January 21, 2023
PubMed
Summary

This study presents a novel microfluidic chip for rapid, chemical-free bacterial cell lysis using an alternating current electric field. Optimized conditions achieved nearly 100% lysis efficiency, offering a promising solution for point-of-care testing devices.

Keywords:
AC electric fieldE. colicell lysiselectroporationmicrofluidic

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Area of Science:

  • Biotechnology
  • Microfluidics
  • Cell Biology

Background:

  • Cell lysis is crucial for biological and biomedical applications, including diagnostics and drug screening.
  • Existing cell lysis methods often require large equipment, chemicals, and significant sample volumes, limiting their use in point-of-care testing (POCT).
  • There is a need for rapid, portable, and non-invasive cell lysis techniques, especially for bacterial samples.

Purpose of the Study:

  • To design and develop an integrated microfluidic chip for efficient bacterial cell lysis.
  • To investigate the impact of alternating current (AC) electric field parameters (voltage, frequency, flow rate) on lysis efficiency.
  • To establish a reagent-free and high-efficiency cell lysis method for biological and biomedical applications.

Main Methods:

  • An integrated microfluidic chip was designed and fabricated.
  • An alternating current (AC) electric field was applied to induce cell lysis.
  • Experiments were conducted to evaluate the effects of voltage, frequency, and flow rate on *E. coli* lysis efficiency.

Main Results:

  • Bacterial lysis efficiency was found to increase with higher voltage and lower frequency.
  • Lower flow rates also contributed to enhanced lysis efficiency.
  • Near 100% lysis efficiency for *E. coli* was achieved at 10 Vp-p, low frequency, and low flow rate.

Conclusions:

  • The developed microfluidic chip offers a simple, rapid, and reagent-free method for bacterial cell lysis.
  • The AC electric field-based approach is highly efficient and suitable for applications requiring small sample volumes, such as POCT.
  • This technology has significant potential for advancing various biology and biomedical fields reliant on effective cell lysis.