Collaborative Magnetic Microrobots Open New Horizons for Promising Biomedical Applications

Surgeons often find it very difficult to reach a particular part of the body that requires surgery. But that is expected to change in the future when a couple of robots smaller than a grain of salt could go inside the body and work together to perform surgery involving all kinds of complex tasks.

For the first time ever, scientists at the Surgical Robotics Laboratory of the University of Twente (Enschede, Netherlands) have managed to make two microrobots work together to pick up, transport, and assemble inanimate objects in a three-dimensional setting. Remarkably, these magnetic microrobots, each just one millimeter in size, were able to handle tasks like lifting and arranging cubes, and they did so within a 3D environment.

Making the magnetic microrobots work together proved to be a huge challenge. One hurdle was that, like regular magnets, these tiny magnetic robots have the tendency to stick together when they come too close. However, the researchers used this natural attraction to their advantage. By developing a specialized controller, they were able to not only guide the movements of the individual robots but also control how they interact with one another. Because these microrobots are biocompatible and can be maneuvered in tough-to-reach or even confined spaces, they hold considerable potential for use in biomedical research and applications.

“It’s almost like magic,” said Franco Piñan Basualdo, a postdoctoral researcher at the Surgical Robotics Laboratory. “We can remotely manipulate biomedical samples without contaminating them. This could improve existing procedures and open the door to new ones.”

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