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Related Experiment Video

Updated: Jun 22, 2026

Microparticle Manipulation by Standing Surface Acoustic Waves with Dual-frequency Excitations
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Published on: August 21, 2018

Electroactive hydrodynamic weirs for microparticle manipulation and patterning.

Brian M Taff, Salil P Desai, Joel Voldman

    Applied Physics Letters
    |June 17, 2009
    PubMed
    Summary
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    This study introduces a new platform for precisely controlling microparticles using dielectrophoresis and hydrodynamic trapping. It enables advanced particle manipulation techniques for creating complex patterns.

    Area of Science:

    • Microfluidics and Nanotechnology
    • Particle Manipulation
    • Dielectrophoresis

    Background:

    • Precise manipulation of microparticles is crucial for various applications.
    • Existing methods often lack parallelization or fine control.
    • Hydrodynamic trapping and dielectrophoretic forces offer complementary control mechanisms.

    Purpose of the Study:

    • To develop a platform for parallelized manipulation of individual polarizable microparticles.
    • To integrate negative dielectrophoretic forcing with hydrodynamic weir-based trapping.
    • To enable ejection- and exclusion-based microparticle manipulation methods.

    Main Methods:

    • Utilizing negative dielectrophoretic forcing for particle displacement.
    • Employing passive hydrodynamic weir-based trapping for particle capture.

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    A Microfluidic-based Hydrodynamic Trap for Single Particles
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    A Microfluidic-based Hydrodynamic Trap for Single Particles

    Published on: January 21, 2011

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    Last Updated: Jun 22, 2026

    Microparticle Manipulation by Standing Surface Acoustic Waves with Dual-frequency Excitations
    06:51

    Microparticle Manipulation by Standing Surface Acoustic Waves with Dual-frequency Excitations

    Published on: August 21, 2018

    High-resolution Patterning Using Two Modes of Electrohydrodynamic Jet: Drop on Demand and Near-field Electrospinning
    09:16

    High-resolution Patterning Using Two Modes of Electrohydrodynamic Jet: Drop on Demand and Near-field Electrospinning

    Published on: July 10, 2018

    A Microfluidic-based Hydrodynamic Trap for Single Particles
    10:13

    A Microfluidic-based Hydrodynamic Trap for Single Particles

    Published on: January 21, 2011

  • Implementing electrode activation for targeted weir unloading (ejection) and pre-loading prevention (exclusion).
  • Analyzing passive loading dynamics of the device.

    • Main Results:

    • Demonstrated parallelized manipulation of individual microparticles.
    • Successfully integrated dielectrophoresis with hydrodynamic trapping.
    • Enabled ejection-based unloading and exclusion-based prevention of microparticle capture.
    • Showcased the formation of diverse particle patterns through controlled manipulation.

    Conclusions:

    • The developed platform offers a novel approach for high-throughput microparticle manipulation.
    • The combined dielectrophoretic and hydrodynamic trapping strategy enhances control and versatility.
    • This technology has potential applications in micro-assembly, sensing, and cell sorting.