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Area of Science:

  • Robotics
  • Microsystems Engineering
  • Biomedical Engineering

Background:

  • Minimally invasive surgery requires miniaturized tools with integrated sensing.
  • Current microfabrication techniques face challenges in sensor integration and functionalization.

Purpose of the Study:

  • To present a microrobotic platform for precise functionalization of microfibers.
  • To enable accurate integration of electronic sensors onto fibers for surgical applications.

Main Methods:

  • Developed two microrobots (2mm x 3mm x 200µm) for wet transfer of electronic circuits onto fibers (140-830µm diameter).
  • Utilized magnetic control at the air/water interface for precise positioning and orientation of microrobots.
  • Employed microrobot pairs as tweezers for pattern manipulation and alignment with surface tension modeling.

Main Results:

  • Achieved patterning precision of 5µm and orientation error below 0.4°.
  • Demonstrated precise control of microrobot distance and force (0.2 N/mm stiffness, 0.5 N average force).
  • Successfully functionalized a 200µm fiber with sensor embodiments and demonstrated 3D devices.

Conclusions:

  • The microrobotic platform offers a viable solution for advanced sensor integration in microscale surgical tools.
  • This technology facilitates the development of next-generation precision surgical instruments for minimally invasive procedures.