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[×ÊÔ´] nano lett 10.20ÐÂÏÊÔÚÏߣºÊ¯Ä«Ï©³ÉºË¼°×ª»¯ÎªÌ¼ÄÉÃ׹ܣ¨ÕæÐÂÏÊ£©

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 10.20ÐÂÏÊÔÚÏߣºÊ¯Ä«Ï©³ÉºË¼°×ª»¯ÎªÌ¼ÄÉÃ׹ܣ¨ÕæÐÂÏÊ£©
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