Nanowire-based gas sensors

X Chen, KY Wong, CA Yuan, GQ Zhang

Research output: Contribution to journalArticleScientificpeer-review

281 Citations (Scopus)


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.
Original languageEnglish
Pages (from-to)178-195
Number of pages18
JournalSensors and Actuators B: Chemical: international journal devoted to research and development of physical and chemical transducers
Publication statusPublished - 2012


  • academic journal papers
  • CWTS 0.75 <= JFIS < 2.00


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