Tensile strength of single-walled carbon nanotubes directly measured from their macroscopic ropes

Li, F.; Cheng, H. M.; Cheng, H.M.; Bai, S.; Su, G.; Dresselhaus, M. S.; Dresselhaus, M.S.
November 2000
Applied Physics Letters;11/13/2000, Vol. 77 Issue 20
Academic Journal
20 mm long ropes consisting of soundly aligned single-walled carbon nanotube (SWNT) ropes, synthesized by the catalytic decomposition of hydrocarbons, were employed for direct tensile strength measurements. The average tensile strength of SWNT rope composites is as high as 3.6±0.4 GPa, similar to that of carbon fibers. The tensile strength of SWNT bundles was extrapolated from the strength of the composites to be 2.3±0.2 to 14.2±1.4 GPa after simply taking into account the volume fraction of SWNT bundles in the minicomposite, and the tensile strength of single SWNTs was estimated to be as high as 22.2±2.2 GPa. The excellent mechanical properties of SWNTs will make them an ideal reinforcement agent for high performance composite materials. © 2000 American Institute of Physics.


Related Articles

  • Effect of characteristic defects on the strength of metal nanolayers applied to a polymer surface. Volynskii, A.; Panchuk, D.; Moiseeva, S.; Kechek�yan, A.; Yarysheva, L.; Dement�ev, A.; Bakeev, N. // Doklady Physical Chemistry;Feb2008, Vol. 418 Issue 2, p19 

    The article presents a study which investigates the effect of characteristic defects on metal nanolayers which are applied to a polymer surface. In the study, the researchers found that the characteristic defects significantly affect the strength of the metal nanolayers. They observed that such...

  • Effects of initial compression stress on wave propagation in carbon nanotubes. Selim, M. M.; Abe, S.; Harigaya, K. // European Physical Journal B -- Condensed Matter;Jun2009, Vol. 69 Issue 4, p523 

    An analytical method to investigate wave propagation in single- and double- walled carbon nanotubes under initial compression stress is presented. The nanotube structures are treated within the multilayer thin shell approximation with the elastic properties taken to be those of the graphene...

  • Multi-Phase Nanocrystalline Al Alloy with Superior Strength and Modulus at Elevated Temperatures. Luo, H.; Zhang, L. C.; Shaw, L. // Journal of Materials Engineering & Performance;Aug2005, Vol. 14 Issue 4, p441 

    A multiphase nanocrystalline Al93Fe3Cr2Ti2 alloy containing 30 vol % intermetallic particles was prepared via mechanical alloying, followed by hot extrusion. Systematic compressive tests and modulus measurements were performed as a function of temperature and strain rate. High strengths and...

  • The Landauer Resistivity on Quantum Wires. Kaminaga, Masahiro; Nakano, Fumihiko // Journal of Statistical Physics;Apr2003, Vol. 111 Issue 1/2, p339 

    We study the Landauer resistivity of the Kronig–Penney model which has various behavior depending on the potential and the Fermi energy. In the case of the Sturmian quasiperiodic potential, we discuss examples in which lim inf of it is zero.

  • Mechanical properties and fracture of nanocopper by severe plastic deformations. Bestercia, Michal; Kvačkaj, Tibor; Kováča, Ladislav; Sűlleiová, Katarína; Kuluc, Priit // Proceedings of the Estonian Academy of Sciences, Engineering;Dec2006, Vol. 12 Issue 4, p340 

    The development of the nanostructure in commercial pure copper, its strength and ductility after severe plastic deformation (SPD) with the technology of equal-channel angular pressing (ECAP) are analysed. It is shown that both the strength and ductility can be increased simultaneously by SPD....

  • Problems of the mesomechanics of strength and plasticity of nanostructured materials. Panin, V.; Panin, A. // Russian Physics Journal;Aug2004, Vol. 47 Issue 8, p793 

    The results of the investigations performed in collaboration with our co-workers are reviewed and used to formulate a conceptual framework of the physical mesomechanics of nanostructured materials. Low plasticity of materials of this kind is associated with suppression of the microscale...

  • Evaluation of matrix strength in ultra-fine grained pure Al by nanoindentation. Ling Zhang; Ohmura, Takahito; Emura, Satoshi; Sekido, Nobuaki; Fuxing Yin; Xiaohua Min; Tsuzaki, Kaneaki // Journal of Materials Research;Sep2009, Vol. 24 Issue 9, p25 

    Nanoindentation measurements of the grain interiors of an ultra-fine grained (UFG) pure Al produced by equal channel angular pressing were taken to evaluate the contribution of the matrix strength. Specimens were subjected to 0, 1, 2, 4, and 8 passes at ambient temperature. The nanohardness of...

  • Enhanced yield strength of materials: The thinness effect. Jennett, N. M.; Ghisleni, R.; Michler, J. // Applied Physics Letters;9/21/2009, Vol. 95 Issue 12, p123102 

    We show that yield strength is determined by “thinness” i.e., by the smallest dimension of a structure. Compressing wall-like structures of different length to width ratio, using a NanoindenterXP, has allowed us to distinguish between proposed plasticity size effect theories by...

  • Anomalous deformation twinning in fcc metals at high temperatures. Sinha, Tanushree; Kulkarni, Yashashree // Journal of Applied Physics;Jun2011, Vol. 109 Issue 11, p114315 

    Nanotwinned structures have shown strong promise as optimal motifs for strength, ductility, and grain stability in fcc metals-in sharp contrast to their nano-grained counterparts where gains in strength are disappointingly offset by loss of ductility. However, their high temperature stability...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics