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Rolled-up helical nanobelts: from fabrication to swimming microrobots

Published online by Cambridge University Press:  01 February 2011

Li Zhang  and
Bradley J. Nelson
Li Zhang
Affiliation:
lizhang@ethz.chlizhang1978@gmail.com, ETH Zurich, Zurich, Switzerland
Bradley J. Nelson
Affiliation:
bnelson@ethz.ch, 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.

Keywords

microelectro-mechanical (MEMS)thin filmactuator
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1272: Symposia KK/LL/NN/OO/PP – Integrated Miniaturized Materials-From Self-Assembly to Device Integration , 2010 , 1272-OO01-05
Copyright
Copyright © Materials Research Society 2010

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