One-Dimensional Oxide Nanostructures as Gas-Sensing Materials: Review and Issues

Sensors

Kyoung Jin Choi¹ 

[1] Nano-Materials Center, Korea Institute of Science and Technology, Seoul, 130-650, Korea

关键词: 1-dimensional nanostructures;    gas sensors;    long-term stability;    gas selectivity;    electronic-nose;    room-temperature operation;   

DOI  :  10.3390/s100404083

来源: mdpi

【 摘 要 】

In this article, we review gas sensor application of one-dimensional (1D) metal-oxide nanostructures with major emphases on the types of device structure and issues for realizing practical sensors. One of the most important steps in fabricating 1D-nanostructure devices is manipulation and making electrical contacts of the nanostructures. Gas sensors based on individual 1D nanostructure, which were usually fabricated using electron-beam lithography, have been a platform technology for fundamental research. Recently, gas sensors with practical applicability were proposed, which were fabricated with an array of 1D nanostructures using scalable micro-fabrication tools. In the second part of the paper, some critical issues are pointed out including long-term stability, gas selectivity, and room-temperature operation of 1D-nanostructure-based metal-oxide gas sensors.

【 授权许可】

CC BY   
© 2010 by the authors; licensee MDPI, Basel, Switzerland.