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Related Experiment Videos

Micro-particle sorting by Newton-ring device.

Masahiro Hatta1, Hideaki Monjushiro, Hitoshi Watarai

  • 1Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan.

Chemical Communications (Cambridge, England)
|November 30, 2004
PubMed
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A novel Newton-ring micro-particle sorter effectively separates micro-particles in liquid. This device utilizes a piezo-actuator controlled sub-micrometer gap for precise fractionation of minute sample volumes.

Area of Science:

  • Physics
  • Microfluidics
  • Analytical Chemistry

Background:

  • Accurate separation of micro-particles is crucial for various scientific disciplines.
  • Existing methods for micro-particle fractionation often require larger sample volumes or specialized equipment.

Purpose of the Study:

  • To develop and demonstrate a novel micro-particle sorting device.
  • To achieve high-precision fractionation of micro-particles using a micro-gap interface.

Main Methods:

  • Construction of a micro-particle sorter based on Newton's rings principle.
  • Utilizing a convex lens and a flat glass to create a sub-micrometer gap.
  • Employing a piezo-actuator for precise control of the gap width.

Main Results:

Related Experiment Videos

  • Successful construction of the Newton-ring micro-particle sorter.
  • Demonstrated capability for fractionating very small amounts of micro-particles.
  • The piezo-actuator enabled fine control over the separation gap.

Conclusions:

  • The Newton-ring micro-particle sorter offers a precise method for micro-particle fractionation.
  • This device is suitable for analyzing minimal sample volumes in liquid.
  • The technology holds potential for applications in microfluidics and particle analysis.