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Artificial Xylem Chip: A Three-Dimensionally Printed Vertical Digital Microfluidic Platform.

Xin Min1, Woo Soo Kim1

  • 1Additive Manufacturing Laboratory, School of Mechatronic Systems Engineering, Simon Fraser University, Surrey, British Columbia V3T 0A3, Canada.

Langmuir : the ACS Journal of Surfaces and Colloids
|November 30, 2020
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Summary
This summary is machine-generated.

Three-dimensional printing enables novel vertical channels for digital microfluidics (DMF) devices. This artificial xylem chip demonstrates programmable droplet movement and pumping, advancing lab-on-a-chip technology.

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Area of Science:

  • Microfluidics
  • Additive Manufacturing
  • Biomimetics

Background:

  • Digital microfluidics (DMF) is typically confined to 2D planar structures due to conventional fabrication methods.
  • Existing DMF devices have limitations in form factor and functionality.
  • There is a need for advanced DMF systems with 3D capabilities.

Purpose of the Study:

  • To develop a novel three-dimensional (3D) digital microfluidics system using 3D printing.
  • To create vertical channels for controlled droplet movement.
  • To demonstrate the potential of 3D printed DMF for micropumping applications.

Main Methods:

  • Utilized combined 3D printing methods to fabricate vertical channels and novel electrode forms.
  • Analyzed liquid-gas-solid interfaces using the Young-Lippmann law.
  • Calculated actuation forces for system optimization.
  • Developed a programmable control system with a boost converter for portability.

Main Results:

  • Successfully fabricated 3D vertical channels for stable water droplet movement.
  • Demonstrated programmable vertical droplet movement and pumping inspired by plant xylem.
  • Validated the performance of the 3D printed DMF system.

Conclusions:

  • 3D printing is a viable technology for creating complex 3D vertical DMF devices.
  • The artificial xylem chip shows significant promise for micropumping applications.
  • This work expands the capabilities and applications of lab-on-a-chip technology.