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"Just because you're small doesn't mean you can't be strong. These micro-robots are half a millimeter wide but they can push around objects four times their own weight (see video above).
"To create the plucky bots, Igor Aronson of the Argonne National Laboratory in Illinois suspended tiny magnetic particles between two layers of fluid that don't mix. When an alternating magnetic field was applied perpendicular to the boundary of the liquids, he found that the particles self-assembled to create tiny, worm-like robots. They could be moved around by applying a second, smaller magnetic field parallel to the plane.
"Aronson and his team were able to manipulate the magnetic fields to make the robots behave like a pair of tweezers. As seen in this video, they can grasp and transport a glass bead almost four times their weight.
"To create the plucky bots, Igor Aronson of the Argonne National Laboratory in Illinois suspended tiny magnetic particles between two layers of fluid that don't mix. When an alternating magnetic field was applied perpendicular to the boundary of the liquids, he found that the particles self-assembled to create tiny, worm-like robots. They could be moved around by applying a second, smaller magnetic field parallel to the plane.
"Aronson and his team were able to manipulate the magnetic fields to make the robots behave like a pair of tweezers. As seen in this video, they can grasp and transport a glass bead almost four times their weight.
New Scientist TV: Born to be Viral: Micro-robot carries heavy glass bead
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