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http://hdl.handle.net/10397/3250
| Title: | Enhanced mechanical strength and ductility of metal-repaired defective carbon nanotubes : a density functional study | Authors: | Zheng, G Zhuang, HL |
Issue Date: | 12-May-2008 | Source: | Applied physics letters, 12 May, 2008, v. 92, no. 19, 191902, p. 1-3 | Abstract: | Metal atoms are filled into the defective sites of single-walled carbon nanotube (SWCN) containing vacancy defects, resulting in a stable repaired SWCN. The tensile deformation of the repaired SWCN is investigated by spin-polarized density functional theory. Compared to the defective SWCN, the repaired CN shows significant enhancements in mechanical strength and ductility that are close to those of pristine CN. The underlying physics of these behaviors are analyzed by the structural transformation, electronic structures, and spin and charge distributions during the tensile tests. A strong magnetomechanical coupling effect is found to be responsible for the enhanced mechanical behaviors of metal-CN hybrid structures. | Keywords: | Band structure Carbon nanotubes Density functional theory Ductility Magnetomechanical effects Solid-state phase transformations Tensile strength Vacancies (crystal) |
Publisher: | American Institute of Physics | Journal: | Applied physics letters | ISSN: | 0003-6951 | EISSN: | 1077-3118 | DOI: | 10.1063/1.2924275 | Rights: | © 2008 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in G. P. Zheng & H. L. Zhuang, Appl. Phys. Lett. 92, 191902 (2008) and may be found at http://apl.aip.org/resource/1/applab/v92/i19/p191902_s1 |
| Appears in Collections: | Journal/Magazine Article |
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|---|---|---|---|---|
| Zheng_Zhuang_Metal-repaired_Carbon_Nanotubes.pdf | 529.77 kB | Adobe PDF | View/Open |
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