Engineers at Northwestern University in Evanston, Illinois, have developed the tiniest remote-controlled, walking robot in the world.

The robots, which are about half a millimeter wide each, are made out of a malleable shape-memory alloy that can be deformed and returned to its original shape using heat, according to the report published Wednesday in Science Robotics.

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The research that made the robots possible was led by Yonggang Huang, the Jan and Marcia Achenbach Professor of Mechanical Engineering, and John A. Rogers, the Louis Simpson and Kimberly Querrey Professor of Materials Science and Engineering, at Northwestern University.

Read more: yahoo