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Updated: May 14, 2026
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Label-free Isolation and Enrichment of Cells Through Contactless Dielectrophoresis
Published on: September 3, 2013
Electrode robustness in artificial cerebrospinal fluid for dielectrophoresis-based LoC
Mohamed Amine Miled1, Mohamad Sawan
1Ecole Polytechnique de Montreal, Electrical Engineering department, Montreal, Canada. med-amine.miled@polymtl.ca
Summary
This study introduces a novel hybrid microelectronics/microfluidic Lab-on-Chip (LoC) for implantable medical systems. The device efficiently separates microspheres using dielectrophoresis (DEP) in artificial cerebrospinal fluid (ACSF).
Area of Science:
- Microfluidics
- Microelectronics
- Biomedical Engineering
Background:
- Implantable medical microsystems require advanced detection capabilities.
- Lab-on-Chip (LoC) technology offers miniaturized solutions for biological analysis.
- Neurotransmitter detection is crucial for diagnosing neurological disorders.
Purpose of the Study:
- To present a hybrid microelectronics/microfluidic LoC platform for implantable neurotransmitter detection.
- To demonstrate the functionality and limitations of the developed LoC device.
Main Methods:
- Fabrication of a thin LoC platform integrating microfluidics and a silicon CMOS chip (9 mm × 5 mm).
- Integration of 32 L-shaped electrodes for cell manipulation via dielectrophoresis (DEP).
- In vitro testing using artificial cerebrospinal fluid (ACSF) and microspheres.
Main Results:
- The LoC platform demonstrated efficient separation of microspheres within a 50 µl solution.
- The device features a thin profile (0.5 mm) with integrated micro-channels and CMOS chip.
- Electrode destruction was observed beyond a specific concentration threshold.
Conclusions:
- The developed hybrid LoC platform shows promise for implantable microsystems.
- The device enables efficient cell separation using DEP.
- Further optimization is needed to overcome concentration limitations and ensure long-term stability.
