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Updated: Jun 12, 2026
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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.
Applied Optics
|June 26, 2010
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.
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.
