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Related Experiment Video

Updated: May 15, 2026

Controllable Nucleation of Cavitation from Plasmonic Gold Nanoparticles for Enhancing High Intensity Focused Ultrasound Applications

Controllable Nucleation of Cavitation from Plasmonic Gold Nanoparticles for Enhancing High Intensity Focused Ultrasound Applications

Published on: October 5, 2018

Acoustic trapping with a high frequency linear phased array.

Fan Zheng¹, Ying Li, Hsiu-Sheng Hsu

¹Department of Biomedical Engineering, NIH Resource Center for Ultrasonic Transducer Technology, University of Southern California, Los Angeles, California 90089, USA.

Applied Physics Letters

|December 22, 2012

Summary

This summary is machine-generated.

High frequency ultrasonic phased arrays precisely trap and move microparticles. This acoustic manipulation technology offers efficient, non-mechanical control for microparticle handling.

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Last Updated: May 15, 2026

Controllable Nucleation of Cavitation from Plasmonic Gold Nanoparticles for Enhancing High Intensity Focused Ultrasound Applications

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Published on: October 5, 2018

Optical Trap Loading of Dielectric Microparticles In Air

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Published on: February 5, 2017

Area of Science:

Acoustic manipulation
Microparticle trapping
Phased array technology

Background:

Traditional methods for microparticle manipulation often involve mechanical components.
Precise control over microparticles is crucial in various scientific and industrial applications.
Ultrasonic transducers offer a non-contact method for manipulating small objects.

Purpose of the Study:

To demonstrate the capability of a high frequency ultrasonic phased array for microparticle manipulation.
To investigate the precision and efficiency of acoustic trapping and translation.
To highlight the advantages of phased array technology over single-element transducers.

Main Methods:

Utilized a 64-element, 26 MHz ultrasonic phased array.
Employed focused and steered acoustic beams for manipulation.
Experimentally trapped and translated 45 μm polystyrene microspheres.

Main Results:

Successfully trapped and translated microparticles with high precision.
Demonstrated efficient movement of microparticles to desired positions.
Confirmed the ability to focus and steer acoustic beams for controlled manipulation.

Conclusions:

High frequency ultrasonic phased arrays are effective tools for precise microparticle trapping and translation.
The non-mechanical nature of phased arrays offers significant advantages for acoustic manipulation.
This technology enables efficient and accurate control over microparticle positioning.