Understanding the 3D structure of nanowires
Karlsson, Lisa S; Dick, Kimberly A; Wagner, Jakob B; Malm, Jan-Olle; Deppert, Knut; Samuelson, Lars; Wallenberg, L Reine; Karlsson, Lisa S; Polymer and Materials Chemistry/nCHREM, Lund University, PO Box 124, SE-22100 Lund, Sweden; Dick, Kimberly A; Solid State Physics, Lund University, PO Box 118, SE-22100 Lund, Sweden; Wagner, Jakob B; Polymer and Materials Chemistry/nCHREM, Lund University, PO Box 124, SE-22100 Lund, Sweden; Malm, Jan-Olle; Polymer and Materials Chemistry/nCHREM, Lund University, PO Box 124, SE-22100 Lund, Sweden; Deppert, Knut; Solid State Physics, Lund University, PO Box 118, SE-22100 Lund, Sweden; Samuelson, Lars; Solid State Physics, Lund University, PO Box 118, SE-22100 Lund, Sweden; Wallenberg, L Reine; Polymer and Materials Chemistry/nCHREM, Lund University, PO Box 124, SE-22100 Lund, Sweden
Журнал:
Nanotechnology
Дата:
2007-12-05
Аннотация:
The 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.
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