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arXiv 0808.3199cond-mat.mtrl-scicond-mat.str-el
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单根导电Polymer纳米线的气敏特性及温度的影响

Gas Sensing Properties of Single Conducting Polymer Nanowires and the Effect of Temperature

Yaping Dan, Yanyan Cao, Tom E. Mallouk, Stephane Evoy, A. T. Charlie Johnson

摘要:

我们测量了模板生长的聚(3,4-乙撑二氧噻吩)/聚(苯乙烯磺酸盐)(PEDOT/PSS)为基础的纳米线的电子性能和气敏响应。纳米线具有“条纹”结构(金-PEDOT/PSS-金),通常为8 μ m长(每个部分分别为1 μ m-6 μ m-1 μ m),直径为220 nm。使用介电泳组装,通过预制的金电极接触单纳米线器件。从不同长度和直径的纳米线的测量结果推断出聚合物电导率为11.5 +/- 0.7 S/cm,接触电阻为27.6 +/- 4 kOhm。纳米线传感器检测各种气味,具有快速响应和恢复(秒)。响应(R-R 0)/R 0随分析物浓度呈幂律变化。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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