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Polymer Microvalve Based on Anisotropic Expansion of Polypyrrole

Published online by Cambridge University Press:  01 February 2011

Yevgeny Berdichevsky  and
Y.-H. Lo
Yevgeny Berdichevsky
Affiliation:
Electrical and Computer Engineering Department, University of California, San Diego
Y.-H. Lo
Affiliation:
Electrical and Computer Engineering Department, University of California, San Diego
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Abstract

An actuator fabricated from the conductive polymer polypyrrole using microfabrication techniques is presented. This actuator utilizes the anisotropic volume change, which occurs under application of an electric field in polypyrrole grown in the presence of NaDBS. This volume change is in direction normal to the substrate, and is several times larger than lateral volume change utilized in polypyrrole microactuators to date. The actuator is applied in a microfluidic valve where membrane and microchannels are fabricated from a transparent elastomer using soft lithography. The use of elastomer enabled a good valve seal and encapsulation of the electrolyte used for polypyrrole actuation.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 782: Symposium A – Micro- and Nanosystems , 2003 , A4.4
Copyright
Copyright © Materials Research Society 2004

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References

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