Atomistic dynamics of deformation, fracture, and joining of individual single-walled carbon nanotubes

被引:38
作者
Asaka, K [1 ]
Kizuka, T [1 ]
机构
[1] Univ Tsukuba, Grad Sch Pure & Appl Sci, Special Res Project Nanosci, Tsukuba, Ibaraki 3058571, Japan
关键词
D O I
10.1103/PhysRevB.72.115431
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The tensile deformation process of individual single-walled carbon nanotubes (SWCNTs) was in situ observed with measurements of the mechanical properties by transmission electron microscopy combined with the functions of scanning probe microscopy. The values of Young's modulus, tensile stress and strain at the fracture of SWCNTs are 950 +/- 130 GPa, 25 +/- 1 GPa, and 0.30 +/- 0.03, respectively. It was shown that two tips of fractured SWCNTs can be recovered to produce a single tubular structure by contact under compressive force and bias voltage. The in situ observations also demonstrated the formation of carbon monatomic wires during the fracture process of SWCNTs.
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页数:5
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