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Introduction to the Ultrasound Targeted Microbubble Destruction Technique

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Breaking through Barriers: Ultrafast Microbullet Based on Cavitation Bubble.

Yiwen Feng¹, Deli Jia², Honger Yue¹

¹Key Laboratory of Microsystems and Microstructures Manufacturing (Harbin Institute of Technology), Ministry of Education, Harbin, 150001, China.

Small (Weinheim an Der Bergstrasse, Germany)

|February 3, 2023

Summary

This summary is machine-generated.

This study introduces an ultrafast microbullet propelled by laser cavitation, achieving high speeds for enhanced penetration. This novel propulsion overcomes limitations in micromotor applications, enabling targeted motion in various fields.

Keywords:

cavitation bubbles microbullets micromotors reservoir interfaces ultrafast motion

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Imaging and Quantification of the Area of Fast-Moving Microbubbles Using a High-Speed Camera and Image Analysis

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Published on: September 5, 2020

Area of Science:

Materials Science
Nanotechnology
Fluid Dynamics

Background:

Micromotors offer potential in biomedical and reservoir exploration but are limited by insufficient propulsion.
Overcoming biological barriers and reservoir boundaries requires advanced micromotor capabilities.

Purpose of the Study:

To develop an ultrafast microbullet utilizing laser cavitation for enhanced propulsion.
To investigate the motion mechanism and influencing factors of the microbullet under laser action.

Main Methods:

Experiments conducted using high-speed photography.
Boundary integral method employed to analyze microbullet motion.
Systematic exploration of laser intensity, microbullet size, and temperature effects.

Main Results:

Achieved instantaneous velocities up to 5.23 m/s for polystyrene (PS)/magnetic nanoparticle (MNP) microbullets.
Demonstrated strong penetration ability and targeted motion driven by laser cavitation.
Identified key factors influencing microbullet dynamics.

Conclusions:

Laser cavitation provides an effective propulsion mechanism for microbullets.
The developed microbullet technology enhances micromotor capabilities for challenging applications.
This propulsion strategy opens new avenues for micromotors in engineering and beyond.