Structure of multi-wall carbon nanotubes: AA' graphene helices
- Structure of multi-wall carbon nanotubes: AA' graphene helices
- 이재갑; 이소형; 김용일; 김진규; 이경일; 안재평; 민봉기; 유청종; 채근화; Phillip John
- Graphene; Structure; CNT; AA' graphite; Helix
- Issue Date
- Applied physics letters
- VOL 102, NO 16, 161911-1-161911-5
- The structure of multi-wall carbon nanotubes has been attributed previously to disordered stacking of the graphene planes. Evidence is presented that the nanotubes analyzed in this paper occur with stacked graphene layers in the sequence of AA′, where alternate graphene planes are translated by half the hexagon width. We further present proof that the crystalline materials comprise graphene helices (~5  nm in width), rather than in the form of a perfect tube. We also show that the structural model proposed here may be a common structure for multi-wall carbon nanotubes.
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