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Proceedings Paper

Spatial organization of ZnO nanorods on surfaces via organic templating
Author(s): Julia W. P. Hsu; Zhengrong R. Tian; Neil C. Simmons; Carolyn M. Matzke; James A. Voigt; Jun Liu
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Paper Abstract

Zinc oxide (ZnO) is a technologically important material because of its multi-functional properties, with applications ranging from piezoelectric transducers and varistors to wide-bandgap semiconductor for UV emitters and detectors. In addition to polycrystalline ceramic powders and epitaxial thin films, recent advances in ZnO have been in vapor and solution phase growth of complex nanostructures. For these nanostructures to be useful, a means to place them strategically on the surface is needed. Here we will describe using micro-contact printing to pattern self-assembled monolayer (SAM) molecules that locally inhibit crystal growth on surfaces. These chemically patterned surfaces are then used as templates for ZnO nanorod growth in aqueous solutions. We demonstrate good control of crystal placement with feature size down to 1 µm. In addition, we find that restricting active nucleation regions results in a marked increase in nucleation density. These results are the first demonstration of combining soft lithography and bio-inspired crystal growth to make nanostructures of ZnO. The success illustrated here indicates that such a combination may be applicable to a much broader range of materials systems than previously envisioned.

Paper Details

Date Published: 19 January 2005
PDF: 6 pages
Proc. SPIE 5592, Nanofabrication: Technologies, Devices, and Applications, (19 January 2005); doi: 10.1117/12.581857
Show Author Affiliations
Julia W. P. Hsu, Sandia National Labs. (United States)
Zhengrong R. Tian, Sandia National Labs. (United States)
Neil C. Simmons, Sandia National Labs. (United States)
Carolyn M. Matzke, Sandia National Labs. (United States)
James A. Voigt, Sandia National Labs. (United States)
Jun Liu, Sandia National Labs. (United States)

Published in SPIE Proceedings Vol. 5592:
Nanofabrication: Technologies, Devices, and Applications
Warren Y-C. Lai; Stanley Pau; O. Daniel Lopez, Editor(s)

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