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Related Experiment Video

Updated: Jun 12, 2026

Induction of Microstreaming by Nonspherical Bubble Oscillations in an Acoustic Levitation System
08:19

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

Published on: May 9, 2021

Mie scattering used to determine spherical bubble oscillations.

R G Holt, L A Crum

    Applied Optics
    |June 26, 2010
    PubMed
    Summary

    This study introduces a novel method to measure bubble radius changes over time using scattered laser light intensity. This technique accurately tracks bubble dynamics, crucial for understanding acoustic levitation phenomena.

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    Area of Science:

    • Acoustic levitation
    • Optical physics
    • Fluid dynamics

    Background:

    • Acoustically levitated bubbles exhibit complex dynamics.
    • Measuring these dynamics in real-time is challenging.
    • Scattered light intensity is sensitive to bubble size.

    Purpose of the Study:

    • To develop a non-invasive optical method for real-time bubble radius measurement.
    • To validate theoretical models of light scattering from oscillating bubbles.
    • To enable precise tracking of bubble oscillations under acoustic levitation.

    Main Methods:

    • Linearly polarized laser light scattering from acoustically levitated bubbles.
    • Photodetector measurement of scattered light intensity.
    • Mie theory application to model light scattering.
    • Development of an inverse transfer function for radius determination.

    Main Results:

    • A method to convert measured scattered light intensity to bubble radius over time was established.
    • Theoretical calculations using Mie theory accurately predicted scattered intensity for spherical bubbles.
    • The technique successfully calculated the radius versus time response from experimental intensity data.

    Conclusions:

    • The developed optical method provides an accurate and real-time measurement of bubble radius oscillations.
    • This technique enhances the study of bubble dynamics in acoustic levitation.
    • The integration of Mie theory and experimental data offers a robust approach for bubble characterization.

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    Last Updated: Jun 12, 2026

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