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Rolled-up helical nanobelts: from fabrication to swimming microrobots

Published online by Cambridge University Press:  01 February 2011

Li Zhang
Affiliation:
[email protected]@gmail.com, ETH Zurich, Zurich, Switzerland
Bradley J. Nelson
Affiliation:
[email protected], ETH Zurich, Zurich, Switzerland
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Abstract

We present recent developments in rolled-up helical nanobelts in which helical structures are fabricated by the self-scrolling technique. Nanorobotic manipulation results show that these structures are highly flexible and mechanically stable. Inspired by the helical-shaped flagella of motile bacteria, such as E. coli, artificial bacterial flagella (ABFs) are a new type of swimming microrobot. Experimental investigation shows that the motion, force, and torque generated by an ABF can be precisely controlled using a low-strength, rotating magnetic field. These miniaturized helical swimming microrobots can be used as magnetically driven wireless manipulators for manipulation of microobjects in fluid and for target drug delivery.

Type
Research Article
Copyright
Copyright © Materials Research Society 2010

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References

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