Nucleation of Graphene and its Conversion to Single Walled Carbon Nanotubes
Mattheiu Picher, Pin Ann Lin, Jose L Gomez-Ballesteros, Perla B Balbuena, and Renu Sharma
ABSTRACT: We use an environmental transmission electron microscope to record atomic-scale
movies showing how carbon atoms assemble together on a catalyst nanoparticle to form a
graphene sheet that progressively lifts-off to convert into a nanotube. Time-resolved observations
combined with theoretical calculations confirm that some nanoparticle facets act like a vice-grip
for graphene, offering anchoring sites, while other facets allow the graphene to lift-off, which is
the essential step to convert into a nanotube.![nano lett 10.20新鲜在线:石墨烯成核及转化为碳纳米管(真新鲜)]()
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