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Author Dan, Yaping ♦ Cao, Yanyan ♦ Mallouk, Tom E. ♦ Evoy, Stephane ♦ Johnson, A. T. Charlie
Source arXiv.org
Content type Text
File Format PDF
Date of Submission 2008-08-23
Language English
Subject Domain (in DDC) Computer science, information & general works ♦ Natural sciences & mathematics ♦ Physics
Subject Keyword Condensed Matter - Materials Science ♦ Condensed Matter - Strongly Correlated Electrons ♦ physics:cond-mat
Abstract We measured the electronic properties and gas sensing responses of template-grown poly(3,4-ethylenedioxythiophene)/poly(styrenesulfonate) (PEDOT/PSS)-based nanowires. The nanowires have a "striped" structure (gold-PEDOT/PSS-gold), typically 8um long (1um-6um-1um for each section, respectively) and 220 nm in diameter. Single-nanowire devices were contacted by pre-fabricated gold electrodes using dielectrophoretic assembly. A polymer conductivity of 11.5 +/- 0.7 S/cm and a contact resistance of 27.6 +/- 4 kOhm were inferred from measurements of nanowires of varying length and diameter. The nanowire sensors detect a variety of odors, with rapid response and recovery (seconds). The response (R-R0)/R0 varies as a power law with analyte concentration.
Description Reference: Nanotechnology 20 (2009) 434014
Educational Use Research
Learning Resource Type Article
Page Count 8


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