Chemical sensors using peptide-functionalized conducting polymer nanojunction arrays

被引：44

作者：

Aguilar, AD

Forzani, ES

Li, XL

Tao, NJ ^{[1
]}

Nagahara, LA

Amlani, I

Tsui, R

机构：

[1] Arizona State Univ, Dept Elect Engn, Tempe, AZ 85287 USA

[2] Arizona State Univ, Ctr Solid State Elect Res, Tempe, AZ 85287 USA

[3] Motorola Labs, Embedded Syst & Phys Sci Lab, Tempe, AZ 85284 USA

来源：

APPLIED PHYSICS LETTERS | 2005年 / 87卷 / 19期

关键词：

D O I：

10.1063/1.2128038

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We demonstrate a heavy metal-ion sensor for drinking water analysis using a conducting polymer nanojunction array. Each nanojunction is formed by bridging a pair of nanoelectrodes separated with a small gap (< 60 nm) with electrodeposited peptide-modified polyanilines. The signal transduction mechanism of the sensor is based on the change in the nanojunction conductance as a result of polymer conformational changes induced by the metal-ion chelating peptide. The nanojunction sensor allows real-time detection of Cu2+ and Ni2+ at ppt range. (C) 2005 American Institute of Physics.

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页码：1 / 3

页数：3

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