Nucleation of graphene and its conversion to single-walled carbon nanotubes.
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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.
author list (cited authors)
Picher, M., Lin, P. A., Gomez-Ballesteros, J. L., Balbuena, P. B., & Sharma, R.
complete list of authors
Picher, Matthieu||Lin, Pin Ann||Gomez-Ballesteros, Jose L||Balbuena, Perla B||Sharma, Renu