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Related Experiment Video

Updated: Jun 20, 2026

Fabrication, Operation and Flow Visualization in Surface-acoustic-wave-driven Acoustic-counterflow Microfluidics
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Fabrication, Operation and Flow Visualization in Surface-acoustic-wave-driven Acoustic-counterflow Microfluidics

Published on: August 27, 2013

Ultrafast microfluidics using surface acoustic waves.

Leslie Y Yeo1, James R Friend

  • 1MicroNanophysics Research Laboratory, Monash University, Clayton, VIC 3800, Australia.

Biomicrofluidics
|August 21, 2009
PubMed
Summary
This summary is machine-generated.

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Surface acoustic waves (SAWs) enable rapid microfluidic actuation and particle manipulation, achieving velocities 100x faster than current technologies. This technology facilitates advanced applications from drug delivery to polymer patterning.

Area of Science:

  • Physics
  • Engineering
  • Materials Science

Background:

  • Microfluidic technologies are crucial for precise fluid and particle manipulation.
  • Existing microfluidic methods often face limitations in speed and efficiency.
  • Surface acoustic waves (SAWs) present a potential alternative for advanced microfluidic applications.

Purpose of the Study:

  • To demonstrate the efficacy of surface acoustic waves (SAWs) for high-speed microfluidic actuation.
  • To explore SAW-driven microbioparticle manipulation techniques.
  • To showcase novel applications of SAWs in microfluidics, including mixing, sorting, and aerosol generation.

Main Methods:

  • Utilizing megahertz frequency surface acoustic waves on piezoelectric substrates.
  • Applying SAWs to sessile drops for translation and fluid pumping in microchannels.

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Fabrication and Operation of Acoustofluidic Devices Supporting Bulk Acoustic Standing Waves for Sheathless Focusing of Particles
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Fabrication and Operation of Acoustofluidic Devices Supporting Bulk Acoustic Standing Waves for Sheathless Focusing of Particles

Published on: March 6, 2016

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

Related Experiment Videos

Last Updated: Jun 20, 2026

Fabrication, Operation and Flow Visualization in Surface-acoustic-wave-driven Acoustic-counterflow Microfluidics
12:26

Fabrication, Operation and Flow Visualization in Surface-acoustic-wave-driven Acoustic-counterflow Microfluidics

Published on: August 27, 2013

Fabrication and Operation of Acoustofluidic Devices Supporting Bulk Acoustic Standing Waves for Sheathless Focusing of Particles
10:14

Fabrication and Operation of Acoustofluidic Devices Supporting Bulk Acoustic Standing Waves for Sheathless Focusing of Particles

Published on: March 6, 2016

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

  • Inducing symmetry-breaking and exploiting wave superposition for controlled flow dynamics.
  • Exciting capillary waves and generating inertial liquid jets/aerosols via SAW-substrate interaction.

    • Main Results:

    • Achieved fluid velocities of 1-10 cm/s, one to two orders of magnitude faster than conventional methods.
    • Demonstrated efficient micromixing, particle concentration, and separation using inertial microcentrifugation.
    • Enabled particle aggregation and sorting at standing wave nodes.
    • Generated micronanoparticle collection and sorting via capillary waves.
    • Produced 1-10 µm monodispersed aerosol droplets for applications like inkjet printing and drug delivery.
    • Synthesized 150-200 nm polymerprotein particles and patterned polymer spots with controlled size and spacing.

    Conclusions:

    • SAWs offer a powerful and versatile platform for rapid microfluidic actuation and microbioparticle manipulation.
    • SAW technology significantly enhances microfluidic performance, enabling new applications in diagnostics, materials science, and therapeutics.
    • The ability to control flow, particle behavior, and droplet generation with SAWs provides a simple yet effective tool for microscale engineering.