TITLE

Individually addressed large-scale patterning of conducting polymers by localized electric fields

AUTHOR(S)
Ming Su; Lei Fu; Nianqiang Wu, John L.; Aslam, Mohammed; Dravid, Vinayak P.
PUB. DATE
February 2004
SOURCE
Applied Physics Letters;2/2/2004, Vol. 84 Issue 5, p828
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A scaleable and site-specific patterning approach with individual addressability is demonstrated via an electropolymerization process within the gap of electrodes. The method can pattern conducting polymer structures by applying a bias between desired electrodes in a monomer vapor. The reaction is proposed to happen in a thin water film condensed inside the electrode gap at ambient environment. It is possible to pattern different conducting polymers on the same substrate by exposing to different monomers. Proof-of-concept experiments on pyrrole and thiophene have shown the generality of this simple and robust method, which enables the real-time monitoring of the resistance and deposition of the conducting polymers. Finally, chemical sensing of the patterned polypyrrole structures to ethanol vapor and ammonia gas are presented. © 2004 American Institute of Physics.
ACCESSION #
12063182

 

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