Phys. Rev. Lett. 91, 185502 (2003) [4 pages]Induced Growth of Asymmetric Nanocantilever Arrays on Polar SurfacesReceived 1 June 2003; published 30 October 2003 We report that the Zn-terminated ZnO (0001) polar surface is chemically active and the oxygen-terminated (0001̅ ) polar surface is inert in the growth of nanocantilever arrays. Longer and wider “comblike” nanocantilever arrays are grown from the (0001)-Zn surface, which is suggested to be a self-catalyzed process due to the enrichment of Zn at the growth front. The chemically inactive (0001̅ )-O surface typically does not initiate any growth, but controlling experimental conditions could lead to the growth of shorter and narrower nanocantilevers from the intersections between (0001̅ )-O with ±(011̅ 0) surfaces. © 2003 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.91.185502
DOI:
10.1103/PhysRevLett.91.185502
PACS:
61.46.+w, 81.07.–b
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