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Science 30 June 2000:
Vol. 288. no. 5475, pp. 2335 - 2338
DOI: 10.1126/science.288.5475.2335
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Reports

Microrobots for Micrometer-Size Objects in Aqueous Media: Potential Tools for Single-Cell Manipulation

Edwin W. H. Jager, * Olle Inganäs, Ingemar Lundström

Conducting polymers are excellent materials for actuators that are operated in aqueous media. Microactuators based on polypyrrole-gold bilayers enable large movement of structures attached to these actuators and are of particular interest for the manipulation of biological objects, such as single cells. A fabrication method for creating individually addressable and controllable polypyrrole-gold microactuators was developed. With these individually controlled microactuators, a micrometer-size manipulator, or microrobotic arm, was fabricated. This microrobotic arm can pick up, lift, move, and place micrometer-size objects within an area of about 250 micrometers by 100 micrometers, making the microrobot an excellent tool for single-cell manipulation.

Department of Physics and Measurement Technology, Division of Applied Physics, Linköpings universitet, S-581 83, Linköping, Sweden.
*   To whom correspondence should be addressed. E-mail: edjag{at}ifm.liu.se

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