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Morphological Evolution of CdS Nanowires to Nanosheets

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We report on the formation mechanism of CdS nanosheets based upon extensive scanning electron microscopy and transmission electron microscopy experiments. Two different CdS nanowires were synthesized, whose axial directions are in parallel with [0001] or [0110]. The [0001]-nanowires sustained one-dimensional growth characteristics irrespective of reaction temperature and duration. On the other hand, we observed two-dimensional lateral growth in the [0110]-nanowires. We proposed a three-step process for the morphological evolution of CdS nanowires to nanosheets; (1) nucleation and growth of nanowires by vapor-liquid-solid mechanism, (2) side-branching of secondary nanowires perpendicular to the original nanowires and filling between them by vapor-solid mechanism, and finally (3) formation of nanosheets through the repetition of side-branching and filling processes.


Document Type: Research Article


Publication date: 2009-07-01

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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