Pd nanowire sensors for hydrogen detection

被引：12

作者：

Kim, K ^{[1
]}

Cho, SM ^{[1
]}

机构：

[1] Sungkyunkwan Univ, Dept Chem Engn, Suwon 440746, South Korea

来源：

PROCEEDINGS OF THE IEEE SENSORS 2004, VOLS 1-3 | 2004年

关键词：

hydrogen sensor; nanowire; sensor; anodized aluminum oxide; palladium;

D O I：

10.1109/ICSENS.2004.1426264

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Very sensitive hydrogen sensor is fabricated using palladium(Pd) nanowires electroplated using anodized alumina template. Mechanism for detecting hydrogen concentration is different from conventional hydrogen sensors using Pd. The Pd nanowires have a diameter of about 80nm and the spacing between the wires is about 10nm. Upon diluted hydrogen environment, the wires become swollen as a result of hydrogen dissolution and as the result the resistance decreases due to the closer gap between the wires. Even though a Pd nanowire sensor has been reported by Penner group (Science, 2001), the sensor has a different sensing mechanism and structure of joining nanocrystallites being composed of Pd nanowires and the lower limit of hydrogen concentration is about 1%. The sensor fabricated in this study shows faster response time and can detect as low as 0.1% hydrogen concentration.

引用

页码：705 / 707

页数：3

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