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Inkjet print microchannels based on a liquid template.

Yuzhen Guo1, Lihong Li, Fengyu Li

  • 1Beijing National Laboratory for Molecular Sciences (BNLMS), Key Lab of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China. ylsong@iccas.ac.cn forrest@iccas.ac.cn.

Lab on a Chip
|February 17, 2015
PubMed
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Researchers developed a simple inkjet printing method to create microchannels using temperature-sensitive ink. This technique allows for easy modification, creating functional microfluidic devices like anti-biosorption channels.

Area of Science:

  • Materials Science
  • Chemical Engineering
  • Microfluidics

Background:

  • Microfluidic devices offer precise control over small fluid volumes.
  • Fabrication of microchannels with integrated functionalities remains a challenge.
  • Existing methods often require complex procedures or specialized equipment.

Purpose of the Study:

  • To present a facile and versatile method for microchannel fabrication using inkjet printing.
  • To demonstrate the ability to control microchannel morphology through temperature-sensitive ink.
  • To showcase synchronous functionalization of microchannels during fabrication.

Main Methods:

  • Utilizing inkjet printing with a temperature-sensitive viscosity ink to create a liquid template.
  • Employing a polydimethylsiloxane (PDMS) matrix for microchannel formation.

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  • Performing surface modification by grafting polyethylene glycol (PEG) onto the internal channel surface.

    • Main Results:

    • Successfully fabricated Y-shape microchannels with controllable morphology.
    • Demonstrated the use of the microchannel as a reactor for an acylation fluorigenic reaction.
    • Achieved an anti-biosorption microchannel through in-situ PEG grafting.

    Conclusions:

    • The inkjet printing liquid template method provides a simple and effective route for microchannel fabrication.
    • The technique allows for simultaneous microchannel formation and arbitrary surface modification.
    • This facile approach holds significant potential for the development of customized microfluidic chips.