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Three-dimensional interconnected microporous poly(dimethylsiloxane) microfluidic devices.

Po Ki Yuen1, Hui Su, Vasiliy N Goral

  • 1Science & Technology, Corning Incorporated, Corning, New York 14831-0001, USA. yuenp@corning.com

Lab on a Chip
|March 2, 2011
PubMed
Summary
This summary is machine-generated.

Researchers developed 3D interconnected microporous poly(dimethylsiloxane) (PDMS) microfluidic devices using sugar particles and soft lithography. These novel PDMS devices significantly enhance gas absorption for applications like CO(2) capture and improved cell culture.

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Area of Science:

  • Materials Science
  • Chemical Engineering
  • Biomedical Engineering

Background:

  • Microfluidic devices offer precise control over chemical and biological processes.
  • Poly(dimethylsiloxane) (PDMS) is a common material for microfluidic devices due to its biocompatibility and ease of fabrication.
  • Enhancing mass transfer, particularly gas absorption, is crucial for many microfluidic applications.

Purpose of the Study:

  • To present a novel fabrication method for three-dimensional (3D) interconnected microporous poly(dimethylsiloxane) (PDMS) microfluidic devices.
  • To demonstrate the enhanced gas absorption capabilities of these microporous PDMS devices.
  • To explore potential applications in gas-liquid reactions and cell culture.

Main Methods:

  • Fabrication using soft lithography with a mixture of PDMS pre-polymer and sugar particles.
  • Dissolution of sugar particles to create 3D interconnected microporous structures.
  • Oxygen plasma assisted bonding to seal the microfluidic devices.
  • Gas absorption experiments using carbon dioxide (CO(2)) to acidify water.

Main Results:

  • Successfully fabricated 3D interconnected microporous PDMS microfluidic devices.
  • Demonstrated that microporous PDMS devices achieve approximately 10 times faster CO(2) absorption rates compared to non-porous PDMS devices.
  • Showcased the potential for improved cell survival and function in cell culture applications due to enhanced gas perfusion.

Conclusions:

  • The developed fabrication method provides a versatile approach to creating 3D interconnected microporous PDMS microfluidic devices.
  • Microporous PDMS microfluidic devices offer significant advantages in applications requiring enhanced gas transfer.
  • These devices hold promise for advancing fields such as chemical sensing, gas capture, and tissue engineering.