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A Versatile Method of Patterning Proteins and Cells
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Soft lithography: masters on demand.

Mohamed Abdelgawad1, Michael W L Watson, Edmond W K Young

  • 1Department of Mechanical and Industrial Engineering, University of Toronto, 5 King's College Road, Toronto, ON, CanadaM5S 3G8.

Lab on a Chip
|July 25, 2008
PubMed
Summary
This summary is machine-generated.

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This study introduces masters on-demand, an ultra-rapid prototyping method for microchannel networks. This technique enables fast fabrication of lab-on-a-chip devices for cell analysis and separations.

Area of Science:

  • Microfluidics and Lab-on-a-Chip Technology
  • Materials Science and Engineering
  • Biotechnology

Background:

  • Lab-on-a-chip (LOC) devices require precise microchannel fabrication.
  • Existing prototyping methods can be time-consuming and costly.
  • Rapid fabrication is crucial for advancing LOC applications.

Purpose of the Study:

  • To present an ultra-rapid prototyping technique for microchannel networks.
  • To demonstrate the fabrication of diverse microchannel designs using laser printing.
  • To validate the functionality of fabricated LOC devices.

Main Methods:

  • Developed a masters on-demand technique using laser printing on flexible copper PCB substrates.
  • Employed replica molding for microchannel fabrication.

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  • Utilized a two-step printing process for multi-depth channels.

    • Main Results:

    • Achieved masters fabrication in under 10 minutes.
    • Fabricated microchannels with widths as narrow as 100 micrometers.
    • Created channels with heights ranging from 9 to 70 micrometers.
    • Successfully performed in-channel electrophoretic separations and mammalian cell culture/analysis.

    Conclusions:

    • The masters on-demand technique offers a fast and versatile approach for LOC device prototyping.
    • This method enables the creation of complex microchannel networks with precise dimensions.
    • The fabricated devices are functional for critical biological applications.