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张胜利
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期刊论文
Optimum diameter of single-walled carbon nanotubes in carbon nanotube ropes
PHYSICAL REVIEW B 70, 035403 (2004)，-0001，（）：
In this paper, the optimum diameter of stable single-walled carbon nanotubes (SWNT's) in a rope is calculated theoretically using its conformation energy, which consists of curvature elastic energy and intertube van derWaals energy. An equlibrium shape equation for single layer fullerenes is derived by means of variation of the conformation energy. For straight SWNT's in an SWNT rope, the solution to the equlibrium shape equation gives the optimum diameter to be 1.36nm for stable SWNT's. This agrees well with the experimental observation [Nature 388, 756 (1997); Science 273, 483 (1998)].
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