In situ integrated microrobots driven by artificial muscles built from biomolecular motors

Area of Science:

• Microrobotics and Micro-assembly
• Bio-hybrid Systems
• Microfluidics

Background:

• Microrobots are crucial for submillimeter applications like microsurgery, but their fabrication is hindered by complex component integration.
• Existing methods for assembling microrobots are time-consuming and limit scalability.

Purpose of the Study:

• To propose a novel, efficient, and versatile in situ fabrication method for microrobots.
• To overcome the limitations of traditional microrobot assembly techniques.

Main Methods:

• Developed an in situ photopatterning technique within a microfluidic chip.
• Utilized hydrogel prepolymer for mechanical components and biomolecular motors for artificial muscle actuators.
• Integrated components successively and in situ to form functional microrobots.

Main Results:

• Successfully fabricated microrobots with diverse motion capabilities.
• Demonstrated the fast and cost-effective production of microrobots using simple operations and affordable materials.
• Showcased versatile functions through precise spatiotemporal control of artificial muscles.

Conclusions:

• The proposed in situ fabrication method offers a new paradigm for microrobot integration.
• This approach facilitates the rapid production of bio-hybrid microrobots with enhanced functionalities.
• The method holds potential for advancing microfluidic applications and microsystems engineering.