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Selective growth of ZnO nanoneedles by thermal oxidation of Zn microstructures

Yuvaraj, D and Rao, K Narasimha (2009) Selective growth of ZnO nanoneedles by thermal oxidation of Zn microstructures. In: Materials Science and Engineering B, 164 (3). pp. 195-199.

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Abstract

Zinc film containing hexagonal plate stack and tower-like micro structures were grown on Si substrates at high temperature by thermal evaporation. Thermal oxidation studies on these micro structures have shown that ZnO nanoneedles selectively grow from the facets of the zinc microstructure at temperature above 300 degrees C in atmosphere TEM analysis showed that single crystalline and bicrystalline nanoneedles were formed in this oxidation process and the growth direction of these nanoneedles was identified along the [1 1 (2) overbar 0]. Based on the structural studies and morphological observation, we have proposed a possible mechanism for the selective growth of ZnO nanoneedles during thermal oxidation.

Item Type: Journal Article
Additional Information: copyright of this article belongs to Elsevier Science.
Keywords: Zinc oxide;Nanoneedle;Thermal oxidation;Selective growth; Bicrystalline nanoneedle.
Department/Centre: Division of Physical & Mathematical Sciences > Instrumentation and Applied Physics (Formally ISU)
Date Deposited: 13 Jan 2010 06:54
Last Modified: 19 Sep 2010 05:53
URI: http://eprints.iisc.ernet.in/id/eprint/25145

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