Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/21121
Title: Effects of inlet gas-flow rates on synthesis of CuO nanowires during thermal oxidation
Authors: Xu, CH
Shi, SQ 
Yang, XL
Keywords: Nanowires
Oxidation
Oxides
Simulation
Issue Date: 2012
Publisher: Amer Scientific Publishers
Source: Journal of Computational and Theoretical Nanoscience, 2012, v. 9, no. 9, p. 1293-1297 How to cite?
Journal: Journal of Computational and Theoretical Nanoscience 
Abstract: Ω-shaped copper specimens were oxidized in a tube furnace with wet air at 1 atm. and inlet gas-flow rates from 0.01 to 1.4 l/min at 500 °C for 4 hours. Scanning electronic microscope (SEM) results show that the density of nanowires formed on the surface of specimens during oxidation is significantly related to inlet gas-flow rate and the positions of a Ω-shaped specimen. A 3-dimensional (3D) flow simulation using a CFD solver (Fluent) was used to express local gas flow field near the surface of the specimen. The relation among oxide morphology, including, no-wire, whisker and nanowire, shear stress of flowing gas near the surface of the specimen and inlet gas-flow rate is given in this paper. When the inlet gas-flow rate reaches the critical value of 0.15 l/min, whiskers or nanowires can be formed on the positions of Ω-shaped specimens with low shear stress of flowing gas near the surface of the specimen. The experimental results are explained by oxygen resident time on specimen surface and amount of oxygen through the local surface of a specimen.
URI: http://hdl.handle.net/10397/21121
DOI: 10.1166/jctn.2012.2189
Appears in Collections:Conference Paper

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

5
Last Week
0
Last month
0
Citations as of Sep 7, 2017

WEB OF SCIENCETM
Citations

6
Last Week
0
Last month
0
Citations as of Sep 14, 2017

Page view(s)

35
Last Week
3
Last month
Checked on Sep 18, 2017

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.