Publication Details

This conference paper was originally published as Baowan, D, Cox, BJ and Hill, JM, Joining a carbon nanotube and a graphene sheet, International Conference on Nanoscience and Nanotechnology, ICONN 2008, Melbourne, 25-29 February 2008. Copyright Institute of Institute of Electrical and Electronics Engineers 2008. Original conference paper available here


This paper is a synopsis of the two least squares approaches developed in [1] for the perpendicular joining of a flat graphene sheet with a carbon nanotube. The two least squares approaches are the variation in the bond length and the variation in the bond angle. These are used to examine the joined structure of a zigzag (8,0) carbon nanotube with a flat graphene sheet. There are sixteen possible distinct defects corresponding to the number of atoms at the (8,0) tube open end, and therefore, in total sixteen joining structures need to be investigated. Moreover, the polygons that occur at the junction are determined and are shown to be consistent with Euler’s theorem. Assuming that only pentagons, hexagons and heptagons are acceptable, the number of possible structures is greatly reduced, but there is only one structure that is physically meaningful. These purely geometrical approaches can be formally related directly to a certain numerical energy minimization method used by a number of authors [2-5].



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