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Title: Room temperature hydrogen and hydrocarbon sensors based on single nanowires of metal oxides
Authors: Rout, Chandra Sekhar
Kulkarni, G U
Rao, C N R
Keywords: Ethanol Sensing Characteristics
Zno Nanorod Arrays
Gas Sensors
Issue Date: 7-May-2007
Publisher: IOP Publishing Ltd
Citation: Journal of Physics D:Applied Physics 40(9), 2777-2782 (2007)
Abstract: Hydrogen sensing characteristics of single nanowires of ZnO, TiO2 and WO2.72 have been investigated by contact mode atomic force microscopy. All these nanostructures are able to sense hydrogen, but the WO2.72 nanowire ( 40 nm diam) exhibits the highest sensitivity of 22 for 1000 ppm at 298 K. The WO2.72 nanowire is also found to be good at sensing aliphatic hydrocarbons in the form of liquefied petroleum gas with a sensitivity of 15 for 1000 ppm at room temperature. A WO2.72 nanowire with a diameter of 40 nm shows better sensing characteristics than a nanowire of 16 nm diameter.
Description: Restricted Access
Other Identifiers: 0022-3727
Appears in Collections:Research Papers (Prof. C.N.R. Rao)

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