What is it about?

Acoustic tweezers have the potential to revolutionize noninvasive surgery and drug delivery, but their theoretical predictions are limited. Current models assume a uniform medium and spherical micro-objects. In this study, we propose a new theoretical model considering layered heterogeneous media with irregular interfaces. We use plane wave decomposition and scalar diffraction theory to describe acoustic wave behavior through these interfaces. The spatial distribution of the acoustic field is determined using the angular spectrum method, and a conformal transformation approach considers the geometric characteristics of axisymmetric objects. This model, validated against numerical simulations, enhances our understanding of acoustic tweezers, offering a tool for manipulating irregular micro-objects in complex environments.

Featured Image

Why is it important?

This theoretical model is expected to contribute significantly to the development of acoustic tweezers technology, enabling the manipulation of irregular microobjects in multi-layer medium and providing important theoretical support for the application of acoustic tweezers in complex medium.


Acoustic tweezers have shown great potential in revolutionizing fields such as noninvasive surgery and drug delivery.

Tianquan Tang
University of Hong Kong

Read the Original

This page is a summary of: Propagation of acoustic waves and determined radiation effects on axisymmetric objects in heterogeneous medium with irregular interfaces, Physics of Fluids, January 2024, American Institute of Physics,
DOI: 10.1063/5.0185177.
You can read the full text:



The following have contributed to this page