CAMP: Closed-Loop Acoustic-Magnetic Propulsion of Microrobots for Precision Cell Manipulation

Area of Science:

• Biomedical Engineering
• Microfabrication
• Robotics

Background:

• Accurate manipulation of microobjects and cells is crucial for biomedical and microfabrication applications.
• Existing microrobotic systems often lack comprehensive multi-stimuli responsiveness, speed, and precise control.

Purpose of the Study:

• To demonstrate automated position and speed control of acoustically powered, bubble-based, magnetically steerable microrobots.
• To achieve precise micromanipulation of mammalian cells using these microswimmers.

Main Methods:

• Implementation of a closed-loop control system for enhanced microrobot guidance.
• Modulation of microrobot speed by adjusting acoustic frequency near the resonant value.
• Guidance of microrobots to mammalian cells for manipulation via pulling.

Main Results:

• Automated position and speed control of magnetically steerable, acoustically powered microrobots was successfully demonstrated.
• Micromanipulation of mammalian cells was achieved by guiding microrobots to cells and pulling them.
• The study highlights the capability and controllability of these responsive microrobots.

Conclusions:

• The developed microrobots show significant potential for advanced cell-based applications.
• These microrobots offer precise control for manipulation, delivery, and microsurgery.
• The findings pave the way for future innovations in micro-robotics for biological applications.