Single-shot interferometric measurement of cavitation bubble dynamics

Area of Science:

• Physics
• Fluid Dynamics
• Optics

Background:

• Cavitation bubble dynamics are crucial in various scientific and industrial applications.
• Accurate measurement of these dynamics often requires complex and costly equipment like ultra-high speed cameras.
• Existing methods may lack the necessary spatial or temporal resolution for detailed analysis.

Purpose of the Study:

• To introduce a novel interferometric method for direct, single-shot measurement of cavitation bubble dynamics.
• To achieve nanoscale spatial and sub-nanosecond temporal resolution in these measurements.
• To provide a more accessible alternative to traditional high-speed imaging systems.

Main Methods:

• An interferometric technique was employed for direct measurement.
• The method allows for single-shot data acquisition.
• Nanoscale spatial resolution and sub-nanosecond temporal resolution were achieved.

Main Results:

• Measurements closely matched theoretical predictions for cavitation bubble dynamics.
• The method demonstrated spatial precision surpassing the optical diffraction limit.
• The technique successfully captured dynamics over large time intervals.

Conclusions:

• The developed interferometric method provides accurate, high-resolution measurements of cavitation bubble dynamics.
• This approach reduces the need for expensive ultra-high speed camera systems.
• The method has broad utility for cavitation research and metrology, including optorheological materials characterization.