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Updated: May 6, 2026

A Microfluidic-based Electrochemical Biochip for Label-free DNA Hybridization Analysis
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Integrated microfluidic device for DNA extraction using electric valves.

Rasool Dezhkam1,2, Amir Shamloo3,4, Mohammadmahdi Eskandarisani5

  • 1Department of Mechanical Engineering, Sharif University of Technology, Tehran, Iran.

Scientific Reports
|May 4, 2026
PubMed
Summary

This study introduces a novel lab-on-a-chip platform for automated genomic deoxyribonucleic acid (DNA) extraction. The integrated system efficiently isolates DNA using microfluidic chips and silica filtration, achieving high purity and yield.

Keywords:
Chemical Cell LysisDNA ExtractionElectric ValvesLab-on-a-chip SystemMicrofluidics

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Area of Science:

  • Biotechnology
  • Genomics
  • Microfluidics

Background:

  • Deoxyribonucleic acid (DNA) isolation is essential for genetic analysis.
  • Current methods can be time-consuming and labor-intensive.
  • Automated solutions are needed for efficient DNA extraction.

Purpose of the Study:

  • To develop an integrated lab-on-a-chip platform for automated genomic DNA extraction.
  • To optimize microfluidic parameters for efficient cell lysis and DNA purification.
  • To demonstrate the platform's efficacy compared to commercial methods.

Main Methods:

  • An integrated lab-on-a-chip system combining a passive micromixer and silica filtration.
  • Three interconnected microfluidic chips for mixing, lysis, and purification.
  • Electrically actuated valves for precise fluid routing.
  • Systematic optimization of fluid velocity, filter thickness, lysis temperature, and cell concentration.

Main Results:

  • Optimized conditions yielded 147.23 ± 29.04 ng/µL DNA.
  • Achieved approximately 90% extraction efficiency compared to commercial kits.
  • Confirmed DNA integrity via PCR amplification and agarose-gel electrophoresis.
  • Demonstrated rapid, efficient, and semi-automated DNA isolation.

Conclusions:

  • The multi-chip microfluidic platform offers a robust and efficient method for genomic DNA isolation.
  • This automated system provides a viable alternative to conventional bench-top DNA extraction techniques.
  • The platform shows potential for various downstream genetic applications.