Nanopropeller arrays of zinc oxide

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 {21̄1̄0} surfaces, which grew first; the sixfold symmetric nanoblades are later form...

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Veröffentlicht in:Applied physics letters 2004-04, Vol.84 (15), p.2883-2885
Hauptverfasser: Gao, Pu Xian, Wang, Zhong L.
Format: Artikel
Sprache:eng
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Zusammenfassung: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 {21̄1̄0} surfaces, which grew first; the sixfold symmetric nanoblades are later formed along the crystallographic equivalent a axes (〈21̄1̄0〉) 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.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.1702137