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Related Experiment Video

Updated: Jun 8, 2026

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

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

Published on: May 9, 2021

Pattern formation in bubbles emerging periodically from a liquid free surface.

H N Yoshikawa¹, C Mathis, P Maïssa

¹Laboratoire J.-A. Dieudonné, UMR 6621 CNRS/Université de Nice-Sophia Antipolis, Parc Valrose, 06108 Nice Cedex 02, France. harunori@unice.fr

The European Physical Journal. E, Soft Matter

|September 18, 2010

Summary

This summary is machine-generated.

Centimeter-scale bubbles form diverse star-like and spiral patterns on viscous liquid surfaces. These patterns emerge due to a consistent angular shift in bubble emission, mimicking phyllotaxis in plants.

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

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A Microfluidic System with Surface Patterning for Investigating Cavitation Bubble(s)–Cell Interaction and the Resultant Bioeffects at the Single-cell Level

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Published on: January 10, 2017

Area of Science:

Fluid dynamics
Pattern formation
Complex systems

Background:

Bubbles periodically emerge on the free surface of viscous liquids in cylindrical containers.
Interactions among bubbles in the central zone lead to radial emission and pattern development.

Purpose of the Study:

To investigate the formation of patterns created by centimeter-scale bubbles on a viscous liquid surface.
To understand the mechanism driving the transition from simple to complex bubble patterns.

Main Methods:

Experimental observation of bubble behavior in a cylindrical container.
Analysis of bubble emergence frequency and its effect on pattern formation.
Measurement of angular shift in bubble emission direction.

Main Results:

Increasing bubble emergence frequency leads to spontaneous formation of star-like and spiral patterns.
A constant angular shift in bubble emission direction is identified as the cause of pattern formation.
Supercritical bifurcation observed, transitioning patterns from two opposed arms to spirals.

Conclusions:

The observed bubble patterns are analogous to phyllotaxis (leaf arrangement) in botany.
Pattern formation is driven by a packing mechanism of successively emitted bubbles.
This study highlights similarities between physical phenomena and biological growth patterns.