Vapor Detection Performance of Vertically Aligned, Ordered Arrays of Silicon Nanowires with a Porous Electrode

被引：28

作者：

Field, Christopher R. ^{[1
]}

In, Hyun Jin ^{[2
]}

Begue, Nathan J. ^{[2
]}

Pehrsson, Pehr E. ^{[1
]}

机构：

[1] USN, Res Lab, Div Chem, Washington, DC 20375 USA

[2] CNR, Washington, DC 20001 USA

来源：

ANALYTICAL CHEMISTRY | 2011年 / 83卷 / 12期

关键词：

WALLED CARBON NANOTUBES; SENSORS;

D O I：

10.1021/ac200779d

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Vertically aligned, ordered arrays of silicon nanowires capped with a porous top electrode are used to detect gas phase ammonia and nitrogen dioxide in humidified air. The sensors had very fast response times and large signal-to-noise ratios. Calibration curves were created using both an initial slope method and a fixed-time point method. The initial-slope method had a power law dependence that correlates well with concentration, demonstrating a viable alternative for eventual quantitative vapor detection and enabling shorter sampling and regeneration times.

引用

页码：4724 / 4728

页数：5

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