In-situ Observation of Current-Pulse-Induced Curling of Graphene Edges and Carbon-Cages Production

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概要

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• We found a new cage transformation process where Joule heating with a cyclic current pulse strongly triggered the curling of graphene edge, and enhanced the transformation of the cages feeding with a source of amorphous carbon that adhered on the graphene sheet. Here the cyclic thermal stress seems to play an important role to induce the curling of the graphene edges. We also found that internal stress induced by a mechanical vibration strongly enhanced the transformation to larger carbon-cages and multi-walled graphitic onions that was never appeared in the current pulse induction.

• 2012-06-25

著者

• Fujita Jun-ichi

  Institute For Nuclear Study University Of Tokyo

• Ueki Ryuichi

  Institute of Applied Physics, University of Tsukuba, Tsukuba, Ibaraki 305-8573, Japan

• Nishijima Takuya

  Institute of Applied Physics, University of Tsukuba, Tsukuba, Ibaraki 305-8573, Japan

• Kano Emi

  Institute of Applied Physics, University of Tsukuba, Tsukuba, Ibaraki 305-8573, Japan

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