Stable single helical C-and I-chains inside single-walled carbon nanotubes |
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| Institution: | 1. College of Science, Liaoning University of Technology, Jinzhou 121001, China;
2. State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China;
3. College of Mathematics and Physics, Bohai University, Jinzhou 121001, China;
4. Electric Engineering College, Liaoning University of Technology, Jinzhou 121001, China |
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| Abstract: | The helicity of stable single helical carbon chains and iodine chains inside single-walled carbon nanotubes(SWCNTs)is studied by calculating the systematic van der Waals interaction energy.The results show that the optimal helical radius increases linearly with increasing tube radius,which produces a constant separation between the chain structure and the tube wall.The helical angle exhibits a ladder-like decrease with increasing tube radius,indicating that a large tube can produce a small helicity in the helical structures. |
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| Keywords: | nanotube peapod carbon chain iodine chain |
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