The isolation of individual single-wall carbon nanohorns (SWNHs) from spherical dahlia-shaped aggregates of SWNHs has been successfully achieved for the first time by sucrose density gradient centrifugation. The shapes of the individual SWNHs took straight and two- and three-way branched forms. The lengths of the straight SWNHs or of each arm of the branched types were 10−70 nm, and their diameters were 2−10 nm. This new type of nanocarbon tubules will advance research of the applications of carbon nanostructures.
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Zhang et al. (2009) studied this question.
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