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. 2014 May 9;4:4739. doi: 10.1038/srep04739

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(a) A crossectional view of SEM image for GNBs grown at 950°C and 560 torr. Inset shows the corresponding Raman spectrum. (b) TEM image for GNBs in (a). (c) A high resolution TEM image for GNBs with a clearly internal layer distance of ~0.37 nm.