The unique topology and exceptional properties of carbon nanoscrolls (CNSs) have inspired unconventional nano-device concepts, yet the fabrication of CNSs remains rather challenging. Using molecular dynamics simulations, we demonstrate the spontaneous formation of a CNS from graphene on a substrate, initiated by a carbon nanotube (CNT). The rolling of graphene into a CNS is modulated by the CNT size, the carbon-carbon interlayer adhesion, and the graphene-substrate interaction. A phase diagram emerging from the simulations can offer quantitative guideline toward a feasible and robust physical approach to fabricating CNSs.
Zhao Zhang and Teng Li, Applied Physics Letters, 97, 081909 (2010). doi:10.1063/1.3479050
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two questions
Dear, Teng:
Q1: does this phenomenon happen too if there is no substrate ( like the condition in Ref.1, or other boundary conditions) ?
Q2: to get the CNSs, is there any convenient way to draw out the CNT (as mentioned in Ref. 1, there water can been evaporated) ?
(1) Nano Lett., 2009, 9 (11), pp 3766–3771
thank you.