Acoustic cavitation structures produced by artificial implants of nuclei

Area of Science:

• Acoustics
• Fluid Dynamics
• Chemical Engineering

Background:

• Controlling bubble structures is crucial for applications like sonochemistry and ultrasound.
• Artificial nuclei implantation offers a method to initiate and manipulate cavitation.
• Understanding cavitation dynamics is key to optimizing sonochemical processes.

Purpose of the Study:

• To investigate high-density controllable bubble structures generated by artificial nuclei.
• To analyze the focusing action and origin of jet-induced cone-like cavitation.
• To measure the sonochemical activity and discuss the controllability of cavitation bubble clusters.

Main Methods:

• Artificial nuclei implantation to generate cavitation structures.
• Analysis of focusing action and physical origin of jet-induced cavitation.
• Potassium iodide dosimetry for measuring sonochemical activity.
• Discussion on cavitation bubble cluster controllability in acoustic fields.

Main Results:

• Successfully produced high-density, controllable bubble structures near a radiating surface.
• Identified and analyzed two typical cavitation structures formed by artificial nuclei.
• Investigated the focusing action and origin of jet-induced cone-like bubble structures.
• Quantified sonochemical activity using potassium iodide dosimetry.

Conclusions:

• Artificial nuclei implantation provides a method for generating controllable high-density bubble structures.
• The study elucidates the dynamics of specific cavitation structures, including jet-induced cones.
• Sonochemical activity is measurable and controllable, offering potential for optimized applications.