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Related Experiment Video

Updated: Jul 15, 2025

Induction of Microstreaming by Nonspherical Bubble Oscillations in an Acoustic Levitation System

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Versatile bubble maneuvering on photopyroelectric slippery surfaces.

Haiyang Zhan¹, Zichao Yuan¹, Yu Li¹

¹State Key Laboratory of High-performance Precision Manufacturing, Dalian University of Technology, Dalian, 116024, P. R. China.

Nature Communications

|October 3, 2023

Summary

This study introduces a novel photopyroelectric slippery surface (PESS) for precise, contactless bubble manipulation. This innovation enables versatile underwater bubble control, including steering, splitting, and detachment, with applications in micro-robotics.

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Area of Science:

Surface Science
Microfluidics
Optics

Background:

Contactless bubble manipulation offers significant advantages across various applications.
Existing methods for light-induced bubble maneuvering face challenges in robust transportation, splitting, and detachment.

Purpose of the Study:

To develop a versatile strategy for robust underwater bubble manipulation using light.
To achieve high spatiotemporal resolution in controlling bubble dynamics like steering, splitting, merging, and detachment.

Main Methods:

Construction of a photopyroelectric slippery surface (PESS) with a sandwich structure.
Utilizing near-infrared (NIR) light irradiation to induce dielectric wetting and a nonuniform electric field.
Leveraging Laplace and dielectrophoresis forces for bubble manipulation.

Main Results:

Demonstrated high-efficiency bubble steering with agile direction maneuverability and high velocity.
Achieved flexible and precise splitting, merging, and detachment of underwater bubbles.
Extended bubble control capabilities to microrobot applications, including cargo transportation and micropart assembly.

Conclusions:

The PESS provides a robust platform for versatile bubble manipulation.
This strategy significantly advances bubble control for microfluidic devices and soft robotics.
The developed technique offers a valuable approach for various bubble-involved processes.