Title:
Nanopropeller arrays of zinc oxide
Nanopropeller arrays of zinc oxide
Author(s)
Gao, Puxian
Wang, Z. L. (Zhong Lin)
Wang, Z. L. (Zhong Lin)
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Abstract
Polar surface dominated ZnO nanopropeller arrays were synthesized by a two-step high temperature solid-vapor deposition process. The axis of the nanopropellers is a straight nanowire along the c axis and enclosed by {20} surfaces, which grew first; the sixfold symmetric nanoblades are later formed along the crystallographic equivalent a axes (20) perpendicular to the nanowire; and the array is formed by epitaxial growth of nanoblades on the nanowire. The top surface of the nanoblade is the Zn terminated +c plane, showing surface steps and possible secondary growth of nanowires due to higher self-catalytic activity, while the back surface is the oxygen-terminated –c plane, which is smooth and inert.
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Date Issued
2004-04-12
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Text
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Article