期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 177, 期 -, 页码 178-195出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2012.10.134
关键词
Nanowire gas sensor; Nanotechnology; Sensing principle; More than Moore
资金
- Dutch Technology Foundation (STW) [10058]
Gas sensors fabricated with nanowires as the detecting elements are powerful due to their many improved characteristics such as high surface-to-volume ratios, ultrasensitivity, higher selectivity, low power consumption, and fast response. This paper gives an overview on the recent process of the development of nanotechnology and nanowire-based gas sensors. The two basic approaches, top-down and bottom-up, for synthesizing nanowires are compared. The conduction mechanisms, sensing performances, configurations, and sensing principles of different nanowire gas sensors and arrays are summarized and discussed. Meanwhile, an emerging nanowires fabrication method and a self-powered nanowire pH sensor are highlighted. The scientific and technological challenges in the field are discussed at the end of the review. (c) 2012 Elsevier B.V. All rights reserved.
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