Lisa S Karlsson et al 2007 Nanotechnology 18 485717 doi:10.1088/0957-4484/18/48/485717
nanowires
Lisa S Karlsson1, Kimberly A Dick2, Jakob B Wagner1, Jan-Olle Malm1, Knut Deppert2, Lars Samuelson2 and L Reine Wallenberg1
Show affiliationsThe effects of lamellar twinning in epitaxial particle-assisted
nanowires are investigated in an extensive high resolution electron microscopy (HRTEM) study of the low index zones
,
,
and
. As these directions are non-parallel to the (
) twin planes we find that the twin segments exhibit two different zone axes as a consequence of twinning. In the first three cases the alternative zones were found to be
,
and
. These findings are supported by a comparison of experimental HRTEM images and multi-slice simulations along with fast Fourier transform mapping. From the appearance of non-overlapping regions we conclude that the nanowires are bound by {111} facets only. The twin formation and the development of the stable side facets are discussed.
61.46.-w Structure of nanoscale materials
68.55.-a Thin film structure and morphology
68.37.Lp Transmission electron microscopy (TEM)
81.15.Gh Chemical vapor deposition (including plasma-enhanced CVD, MOCVD, etc.)
Issue 48 (5 December 2007)
Received 31 August 2007, in final form 17 October 2007
Published 1 November 2007
nanowires
Lisa S Karlsson et al 2007 Nanotechnology 18 485717
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