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Self-Catalytic and Selective Growth of ZnO Nanoneedles by Micro-Contact Printing and CVD

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Abstract:

A self-catalytic method to selectively grow ZnO nanoneedles is demonstrated by simply combining a conventional micro-contact printing (-CP) and two-step metal-organic chemical vapor deposition (MOCVD) techniques. Self-assembled monolayers (SAMs) of octadecyltrichlorosilane (OTS) were patterned on Si substrates by -CP. The patterned structures of the ZnO nanoneedles were realized on the SAMs-patterned Si substrates by two-step MOCVD at high temperature of 600 °C via the initial preparation of a thin ZnO seed layer with retaining the patterned morphology at low temperature of 170 °C. This combined method of -CP and self-catalytic two-step MOCVD should be applicable to fabricate the patterned alignments of metal oxide nanostructures.

Keywords: CVD; MICRO-CONTACT PRINTING; NANONEEDLES; SELF-CATALYTIC; ZNO

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2008.130

Publication date: July 1, 2008

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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