Metal-layer-assisted coalescence of Au nanoparticles and its effect on diameter control in vapor-liquid-solid growth of oxide nanowires
By using the Au-catalyzed vapor-liquid-solid growth of ZnO and In2O3 nanowires as examples,we demonstrate the critical role of the coalescence of Au catalyst nanoparticles in determining the final diameter distribution of oxide nanowires. The enhanced coalescence is facilitated by a transient liquid...
Saved in:
Main Authors: | , , , , , , , , |
---|---|
Other Authors: | |
Format: | Article |
Language: | English |
Published: |
2012
|
Subjects: | |
Online Access: | https://hdl.handle.net/10356/94166 http://hdl.handle.net/10220/8087 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Institution: | Nanyang Technological University |
Language: | English |
id |
sg-ntu-dr.10356-94166 |
---|---|
record_format |
dspace |
spelling |
sg-ntu-dr.10356-941662023-07-14T15:53:36Z Metal-layer-assisted coalescence of Au nanoparticles and its effect on diameter control in vapor-liquid-solid growth of oxide nanowires Guo, Dong Lai Huang, Xiao Xing, Guozhong Zhang, Zhou Li, Gong Ping He, Mi Zhang, Hua Chen, Hongyu Wu, Tom School of Materials Science & Engineering DRNTU::Engineering::Materials::Nanostructured materials By using the Au-catalyzed vapor-liquid-solid growth of ZnO and In2O3 nanowires as examples,we demonstrate the critical role of the coalescence of Au catalyst nanoparticles in determining the final diameter distribution of oxide nanowires. The enhanced coalescence is facilitated by a transient liquid-state metal layer in the initial nucleation stage. The onset and the thickness of this layer are dictated by the metal-vapor pressure and the distance between Au catalyst nanoparticles. Equipped with this insight, we are able to control the diameter of the oxide nanowires by tuning the thickness of the liquid-metal layer and the coalescence of the Au nanoparticles. Published version 2012-05-17T08:13:52Z 2019-12-06T18:51:54Z 2012-05-17T08:13:52Z 2019-12-06T18:51:54Z 2011 2011 Journal Article Guo, D. L., Huang, X., Xing, G. Z., Zhang, Z., Li, G. P., He, M., et al. (2011). Metal-layer-assisted coalescence of Au nanoparticles and its effect on diameter control in vapor-liquid-solid growth of oxide nanowires. Physical Review B, 83. https://hdl.handle.net/10356/94166 http://hdl.handle.net/10220/8087 10.1103/PhysRevB.83.045403 en Physical review b © 2011 The American Physical Society. This paper was published in Physical Review B and is made available as an electronic reprint (preprint) with permission of The American Physical Society. The paper can be found at: [DOI: http://dx.doi.org/10.1103/PhysRevB.83.045403]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. 8 p. application/pdf |
institution |
Nanyang Technological University |
building |
NTU Library |
continent |
Asia |
country |
Singapore Singapore |
content_provider |
NTU Library |
collection |
DR-NTU |
language |
English |
topic |
DRNTU::Engineering::Materials::Nanostructured materials |
spellingShingle |
DRNTU::Engineering::Materials::Nanostructured materials Guo, Dong Lai Huang, Xiao Xing, Guozhong Zhang, Zhou Li, Gong Ping He, Mi Zhang, Hua Chen, Hongyu Wu, Tom Metal-layer-assisted coalescence of Au nanoparticles and its effect on diameter control in vapor-liquid-solid growth of oxide nanowires |
description |
By using the Au-catalyzed vapor-liquid-solid growth of ZnO and In2O3 nanowires as examples,we demonstrate the critical role of the coalescence of Au catalyst nanoparticles in determining the final diameter distribution of oxide nanowires. The enhanced coalescence is facilitated by a transient liquid-state metal layer in the initial nucleation stage. The onset and the thickness of this layer are dictated by the metal-vapor pressure and the distance between Au catalyst nanoparticles. Equipped with this insight, we are able to control the diameter of the oxide nanowires by tuning the thickness of the liquid-metal layer and the coalescence of the Au nanoparticles. |
author2 |
School of Materials Science & Engineering |
author_facet |
School of Materials Science & Engineering Guo, Dong Lai Huang, Xiao Xing, Guozhong Zhang, Zhou Li, Gong Ping He, Mi Zhang, Hua Chen, Hongyu Wu, Tom |
format |
Article |
author |
Guo, Dong Lai Huang, Xiao Xing, Guozhong Zhang, Zhou Li, Gong Ping He, Mi Zhang, Hua Chen, Hongyu Wu, Tom |
author_sort |
Guo, Dong Lai |
title |
Metal-layer-assisted coalescence of Au nanoparticles and its effect on diameter control in vapor-liquid-solid growth of oxide nanowires |
title_short |
Metal-layer-assisted coalescence of Au nanoparticles and its effect on diameter control in vapor-liquid-solid growth of oxide nanowires |
title_full |
Metal-layer-assisted coalescence of Au nanoparticles and its effect on diameter control in vapor-liquid-solid growth of oxide nanowires |
title_fullStr |
Metal-layer-assisted coalescence of Au nanoparticles and its effect on diameter control in vapor-liquid-solid growth of oxide nanowires |
title_full_unstemmed |
Metal-layer-assisted coalescence of Au nanoparticles and its effect on diameter control in vapor-liquid-solid growth of oxide nanowires |
title_sort |
metal-layer-assisted coalescence of au nanoparticles and its effect on diameter control in vapor-liquid-solid growth of oxide nanowires |
publishDate |
2012 |
url |
https://hdl.handle.net/10356/94166 http://hdl.handle.net/10220/8087 |
_version_ |
1772827552999538688 |