"Micro-robots" team up to act like vacuum cleaner

Description 
"Micro-robots" designed by Argonne National Laboratory physicists Alexey Snezhko and Igor Aronson pick up free-floating particles. The competing hydrodynamic flows created by the four-aster assembly trap the particles. This video is courtesy of Nature Materials. Read more about the bots at http://go.usa.gov/KAT
Duration 
0:30
Video ID 
http://youtu.be/zCGilxUtVr0
Credit 
Nature Materials
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