Direct-Vapor-Phase Grown \hbox Micronanostructures for Ethanol, Acetone, and Propanol Gas Sensor

Iridium oxide (IrO 2 ) micronanostructures are grown on fused silica (FS), Si (1 0 0) and copper (Cu) substrates using direct-vapor-phase (DVP) technique and investigated for gas-sensing properties. The shape and size of IrO 2 micronanostructures depend on the rate of evaporation of source material....

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Bibliographic Details
Published in:IEEE transactions on nanotechnology 2010-09, Vol.9 (5), p.625-629
Main Authors: Hullavarad, N V, Hullavarad, S S
Format: Article
Language:English
Subjects:
Chemical sensors
Copper
Direct vapor phase (DVP)
Electrodes
Ethanol
Ferroelectric materials
Gas detectors
gas sensor
Gases
iridium oxide ( hbox{IrO}_{2} )
Nanostructures
nanotubes
Optical materials
Testing
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Summary:Iridium oxide (IrO 2 ) micronanostructures are grown on fused silica (FS), Si (1 0 0) and copper (Cu) substrates using direct-vapor-phase (DVP) technique and investigated for gas-sensing properties. The shape and size of IrO 2 micronanostructures depend on the rate of evaporation of source material. The sensitivity of IrO 2 to ethanol, acetone, and propanol is tested under similar test conditions. The sensitivity is clearly distinguishable by measuring the change in the response (recovery) time for ethanol, acetone, and propanol, and are measured to be 3 (2.9 s), 4.7 (3.9 s), and 5.1 s (4 s), respectively.
ISSN:1536-125X
1941-0085
DOI:10.1109/TNANO.2010.2056696