South Korean scientists at Hanyang University have developed swarms of tiny magnetic micro-robots inspired by ants, capable of navigating through blood vessels.
These microbots, each approximately 600 micrometers in size, utilize rotating magnetic fields to move and collaborate, mimicking the cooperative behavior of ant colonies.
The microbots are constructed from epoxy embedded with ferromagnetic neodymium-iron-boron (NdFeB) particles, allowing them to respond to external magnetic fields. This design enables the robots to self-assemble into various configurations, enhancing their ability to perform complex tasks collectively.
In laboratory tests, these micro-robots demonstrated the ability to:
- Transport objects up to 350 times their own weight on land.
- Form rafts to carry pills 2,000 times heavier than themselves across water surfaces.
- Clear blockages in tubes simulating clogged blood vessels, indicating potential for minimally invasive medical procedures.
The research team envisions applications in targeted drug delivery, where these microbots could navigate the human circulatory system to deliver medications directly to affected areas, reducing side effects and improving treatment efficacy.
However, further development is needed to enhance their autonomy and control within the complex environment of the human body.
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