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"Micro-robots" pick up a glass bead

Description 
"Micro-robots", which are really collections of particles animated by magnetic fields, pick up a glass bead and move it around the screen. Each movement is precisely controlled. The "asters" were designed by Alexey Snezkho and Igor Aronson at Argonne National Laboratory. Video courtesy Nature Materials. Read the full story at http://go.usa.gov/KAT
Duration 
0:54
Video ID 
http://youtu.be/5A6qujxn34M
Credit 
Nature Materials
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