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Related Experiment Video

Updated: Jun 15, 2026

Microfluidic Platform with Multiplexed Electronic Detection for Spatial Tracking of Particles
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3-dimensional electrode patterning within a microfluidic channel using metal ion implantation.

Jae-Woo Choi1, Samuel Rosset, Muhamed Niklaus

  • 1School of Engineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne, 1015, Switzerland. jae-woo.choi@epfl.ch

Lab on a Chip
|March 12, 2010
PubMed
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Ion implantation creates 3D electrodes in microfluidic channels, simplifying lab-on-a-chip device fabrication. This novel technique enables precise particle manipulation using electro-orientation and dielectrophoresis.

Area of Science:

  • Microfluidics
  • Lab-on-a-chip devices
  • Biotechnology

Background:

  • Microfluidic channels commonly use electrical fields for particle manipulation.
  • Traditional electrode patterning requires complex multi-step optical lithography.
  • There is a need for simplified and effective electrode fabrication methods in microfluidics.

Purpose of the Study:

  • To develop a novel method for patterning 3D electrodes within microfluidic channels.
  • To explore the advantages of 3D electrodes over planar designs for particle manipulation.
  • To demonstrate the application of ion-implanted microfluidic channels for biological sample handling.

Main Methods:

  • Utilized ion implantation at a 40-degree angle with a metal shadow mask to pattern electrodes.

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Last Updated: Jun 15, 2026

Microfluidic Platform with Multiplexed Electronic Detection for Spatial Tracking of Particles
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Published on: August 25, 2009

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  • Fabricated 3D electrodes within polydimethylsiloxane (PDMS) microfluidic channels.
  • Demonstrated particle manipulation using electro-orientation and dielectrophoresis.

    • Main Results:

    • Successfully patterned 3D electrodes within PDMS microfluidic channels.
    • Showcased alignment of asymmetric particles using electro-orientation in three axial dimensions.
    • Achieved colloidal focusing and concentration of E. coli bacteria via dielectrophoresis.

    Conclusions:

    • Ion implantation offers a simplified and effective approach for 3D electrode fabrication in microfluidic devices.
    • 3D electrodes provide enhanced capabilities for particle manipulation compared to traditional planar designs.
    • Ion-implanted microfluidic channels hold significant potential for advanced lab-on-a-chip applications, particularly in biological contexts.