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Related Experiment Video

Updated: Mar 11, 2026

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

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

Published on: August 21, 2018

Continuous micro-vortex-based nanoparticle manipulation via focused surface acoustic waves.

David J Collins¹, Zhichao Ma², Jongyoon Han³

¹Pillar of Engineering Product Development, Singapore University of Technology and Design, Singapore 487372, Singapore. aiye@sutd.edu.sg and Singapore-MIT Alliance for Research and Technology (SMART) Centre, Singapore 138602, Singapore.

|November 25, 2016

Summary

This summary is machine-generated.

This study leverages acoustic streaming to precisely manipulate nanoscale particles, enabling efficient separation and purification for advanced biological and industrial applications. The novel method overcomes previous limitations in nanoscale manipulation.

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Fabrication of Nanoheight Channels Incorporating Surface Acoustic Wave Actuation via Lithium Niobate for Acoustic Nanofluidics

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

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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 of Nanoheight Channels Incorporating Surface Acoustic Wave Actuation via Lithium Niobate for Acoustic Nanofluidics

Fabrication of Nanoheight Channels Incorporating Surface Acoustic Wave Actuation via Lithium Niobate for Acoustic Nanofluidics

Published on: February 5, 2020

Area of Science:

Nanotechnology
Acoustofluidics
Biophysics

Background:

Current methods for nanoscale object manipulation lack reliability for separation, concentration, and purification.
Acoustic manipulation is effective for microscale objects but hindered by acoustic streaming at smaller scales.

Purpose of the Study:

To develop a novel method for reliable nanoscale particle manipulation using acoustic streaming.
To demonstrate the continuous and differential focusing of various nanoscale particles.

Main Methods:

Utilizing high-frequency surface acoustic waves (SAW) generated by focused interdigital transducers on lithium niobate.
Exploiting strong acoustic streaming and micro-vortex formation for particle focusing.
Employing a 633 MHz sinusoidal signal for actuation.

Main Results:

Demonstrated effective nanoscale particle manipulation by harnessing acoustic streaming.
Achieved continuous and differential focusing of 100 nm, 300 nm, and 500 nm particles.
Showcased micro-vortex formation enhancing particle manipulation against lateral flow.

Conclusions:

Acoustic streaming can be advantageously used for nanoscale particle manipulation, overcoming previous limitations.
This technique offers a promising solution for separation, concentration, and purification of nanoscale objects.
The method facilitates precise control over particle behavior in microfluidic systems.