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Related Experiment Videos

A fast passive and planar liquid sample micromixer.

Jessica Melin1, Guillem Gimenéz, Niclas Roxhed

  • 1Microsystem Technology, Department of Signals, Sensors and Systems, Royal Institute of Technology, SE 100 44, Stockholm, Sweden.

Lab on a Chip
|May 26, 2004
PubMed
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This study introduces a novel microdevice for passive liquid mixing. The innovative design uses surface tension and a unique chamber geometry to achieve effective mixing without external actuation.

Area of Science:

  • Microfluidics
  • Surface Science
  • Chemical Engineering

Background:

  • Microscale liquid mixing is challenging due to laminar flow.
  • Passive mixing devices are needed to overcome diffusion limitations.

Purpose of the Study:

  • To present a novel microdevice for passive liquid sample mixing.
  • To demonstrate effective mixing using surface tension and a geometrical chamber.

Main Methods:

  • Fabrication of a planar microdevice using a single etch process.
  • Utilizing surface tension and a geometrical mixing chamber to induce flow patterns.
  • Demonstration of mixing with two colored liquid samples.

Main Results:

  • A microdevice capable of passive liquid mixing was successfully fabricated.

Related Experiment Videos

  • A time-dependent flow pattern was generated within the liquid plug as it passed through the chamber.
  • Effective mixing of two distinct liquid samples was visually confirmed.

    • Conclusions:

    • The developed microdevice offers a simple and effective solution for passive microscale mixing.
    • The device's design leverages surface tension and geometry, eliminating the need for external actuation.
    • This approach holds potential for various microfluidic applications requiring efficient sample preparation.