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Tellurium nanowire arrays synthesized by electrochemical and electrophoretic deposition

Published online by Cambridge University Press:  03 March 2011

A. W. Zhao ,
C. H. Ye ,
G. W. Meng ,
L. D. Zhang  and
P. M. Ajayan
A. W. Zhao
Affiliation:
Laboratory of Functional Nanomaterials and Nanostructures, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
C. H. Ye
Affiliation:
Laboratory of Functional Nanomaterials and Nanostructures, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
G. W. Meng
Affiliation:
Department of Materials Science and Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180
L. D. Zhang
Affiliation:
Laboratory of Functional Nanomaterials and Nanostructures, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
P. M. Ajayan
Affiliation:
Department of Materials Science and Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180
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Abstract

This article describes both electrochemical deposition and electrophoretic deposition of high-density tellurium (Te) nanowire arrays with wire diameters of 60 nm and lengths of 15–20 μm in the nanochannels of anodic aluminum oxide (AAO) templates. The Te nanowires synthesized via electrochemical deposition (ECD) are generally single crystalline in nature with the wire longitudinal axis along the [001] direction, whereas those synthesized via electrophoretic deposition (EPD) show polycrystalline structures with numerous tiny Te crystallites packed randomly in the wires. The single-crystalline Te nanowires produced by the ECD route are believed to form under a near chemical equilibrium condition; however, the imposed transport and the rapid packing of Te nanocrystallites in the nanochannels of AAO template in external fields lead to polycrystalline Te nanowires in the EPD process. This comparative study of the Te nanowire formation in the nanochannels of AAO template will facilitate the tailoring of the growth of other inorganic nanowires of high quality.

Type
Articles
Information
Journal of Materials Research , Volume 18 , Issue 10 , October 2003 , pp. 2318 - 2322
Copyright
Copyright © Materials Research Society 2003

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References

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