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Using nano-structured surfaces we make micro-robots that can be propelled through liquids with unprecedented control and precision. Each micro-robot is essentially a glass-screw with a screw-pitch that that is less than the wavelength of visible light. The body is made from glass and a magnetic material (cobalt) is added to magnetize and drive these “artificial swimmers” with a magnetic field.

To see the micro-robots in action, choose from the following file formats:

 

 

quicktime (644 KB)

 

 

 

wmv (888 KB)

 

 

 

mpeg (14,341 KB)

 

 

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