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The hybrid diamond-graphite nanowires with lengths up to a few hundred nanometers have been identified as structural units in UNCD films synthesized by chemical vapor deposition with nitrogen gas added. This hybrid material consist of a single crystalline diamond core of 5–6 nm in diameter oriented along the [110] principal axis and graphitic shells of different thickness covering the core.
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Власов et al. (2007) studied this question.
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