Research on the Properties and Defects of Carbon Nanotubes

Abstract:

Carbon nanotube is one of the strongest materials in nature. Carbon nanotubes (CNTs) are the strongest and stiffest materials yet discovered in terms of tensile strength and elastic modulus respectively. This strength results from the covalent sp² bonds formed between the individual carbon atoms. A multi-walled carbon nanotube was tested to have a tensile strength of 63 gigapascals (GPa). Further studies revealed that individual CNT shells have strengths of up to ~100 GPa, which is in agreement with quantum/atomistic models. Since carbon nanotubes have a low density for a solid of 1.3 to 1.4 g/cm³, its specific strength of up to 48,000 kN·m·kg^-1 is the best of known materials, compared to high-carbon steel’s 154 kN·m·kg^-1.

• Periodical: Advanced Materials Research (Volumes 971-973)
• Pages: 157-160
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.971-973.157
• Online since: June 2014
• Authors: A Ying Zhang*
• Keywords: Carbon Nanotube (CN), Defect, Property

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