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Journal of Nanomaterials
Volume 2009, Article ID 310360, 5 pages
http://dx.doi.org/10.1155/2009/310360
Research Article

Crystallographically Oriented Nanorods and Nanowires of RF-Magnetron-Sputtered Zinc Oxide

1National Physical Laboratory, New Delhi 110012, India
2Indian Institute of Technology, New Delhi 110016, India

Received 11 December 2008; Revised 18 February 2009; Accepted 25 March 2009

Academic Editor: Ali Eftekhari

Copyright © 2009 A. K. Srivastava et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The formation of nanoscaled one-dimensional structure constituting the thin films of ZnO via a RF magnetron sputtering process is demonstrated. A detailed analysis of these films has been carried out by exploiting the techniques of ellipsometry, scanning and transmission electron microscopy (SEM, TEM), high-resolution TEM, and scanning tunneling microscopy (STM). The importance of substrate materials due to the nanomorphologies as rods and wires on the substrates as amorphous quartz and silicon, respectively, has been elucidated. It has been exhibited that these fascinating nano-objects (rods, wires) are grown directionally along -axis of hexagonal lattice of ZnO. The nucleation and growth mechanisms of these nano-objects have been discussed to interpret the present results.