title: A novel gas sensor based on field ionization from ZnO nanowires: moderate working voltage and high stability.
abstract: We report a kind of gas sensor using ZnO nanowires as the field ionization anode. The sharp tips of nanowires generate very high electric fields at relatively low voltages. The sensors show good sensitivity and selectivity. Moreover, the detection limitation of the field ionization based ZnO nanowire gas sensors is about 5%. More importantly, a sensor with ZnO nanowires as the anode exhibits an impressive performance with respect to stability and anti-oxidation behavior, which are significantly better than those of carbon nanotubes (CNTs) as electrodes. Therefore, the simple, low-cost, sensors described here could be deployed for a variety of applications.
authors.affiliation: Department of Physics and Key Laboratory of Acoustic and Photonic Materials and Devices of Ministry of Educations, Wuhan University, Wuhan 430072, People's Republic of China. Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, 637616, Singapore.
authors.forename: L
authors.initials: L
authors.lastname: Liao
authors.forename: H B
authors.initials: HB
authors.lastname: Lu
authors.forename: M
authors.initials: M
authors.lastname: Shuai
authors.forename: J C
authors.initials: JC
authors.lastname: Li
authors.forename: Y L
authors.initials: YL
authors.lastname: Liu
authors.forename: C
authors.initials: C
authors.lastname: Liu
authors.forename: Z X
authors.initials: ZX
authors.lastname: Shen
authors.forename: T
authors.initials: T
authors.lastname: Yu