First Principles Study on Ideal Strength of Cu Multi-Shell Nano-Wire


Article Preview

The ideal strength of a nano-component, which is the maximum stress of the structure, provides an insight into the mechanical behavior of minute material. We conducted tensile simulations for cylindrical-shaped Cu nano-wires composed of an atomic chain as a core wrapped around by shell(s) with the structure of (111) layers in an fcc crystal. The results are compared with Cu atomic chain and sheet which are components of the nanowire. Young’s moduli and the ideal strengths of the wires are less than a single atomic chain and a sheet. The mechanical strength of the wire is weakened by the following three factors: (A) Change in electron arrangement caused by combining core and shell; (B) Larger interatomic distance (inherent tensile strain) of the outer shell introduced by the mismatch of atomic layers due to the curvature difference; (C) Mismatch between shells due to curvature difference. Factor (A) reduces the bonding strength in the shell(s) that occupy a greater part of the wire. 5-1 wire, which consists of a core and a shell, is weaker than the single atomic chain and the single sheet due to (A) and (B). 10-5-1 wire, consisting of a core and two shells, has less strength than 5-1 wire due to (C) in addition to (A) and (B).



Key Engineering Materials (Volumes 345-346)

Edited by:

S.W. Nam, Y.W. Chang, S.B. Lee and N.J. Kim




T. Kitamura et al., "First Principles Study on Ideal Strength of Cu Multi-Shell Nano-Wire", Key Engineering Materials, Vols. 345-346, pp. 919-924, 2007

Online since:

August 2007




[1] M. Born: Proc. Cambridge Phil. Soc., (1940), 160.

[2] M. Šob, M. Friák and V. Vitek: Technical Proc. 2 nd Int. Conf. on Computational Nanotechnology, Computational Publications, Cambridge, MA, (2002), p.279.

[3] T. Kitamura, Y. Umeno and A. Kushima: Mater. Sci. Forum, 482, (2005), 25.

[4] Y. Umeno, A. Kushima, T. Kitamura, P. Gumbsch and J. Li: Phys. Rev., B 72, (2005), 165431.

[5] D.C. Bell, Y. Wu, C.J. Barrelet, S. Gradecak, J. Xiang, B.P. Timpo and C.M. Lieber: Macrosc. Res. Tech., 64, (2004), 373.

[6] H.J. Hwang and J.W. Kang: J. Korean Phys. Soc., 40, (2002), 283.

[7] J.W. Kang and H.J. Hwang: J. Phys: Condens. Matt., 14, (2002), 2629.

[8] J. González, V. Rodorigues, J. Bettini, L.G.C. Rego, A.R. Rocha, P.Z. Coura, S.O. Dantas, F. Sato, D.S. Galvão and D. Ugarte: Phys. Rev. Lett., (2004), 126103.

[9] S. Hollensteiner, E. Spiecker, C. Dieker, W. Jäger, R. Adelung, L. Kipp and M. Skibowski: Mater. Sci. Eng., C 23, (2003), 171.

[10] G. Kresse and J. Hafner: Phys. Rev., B 47, (1993), 558.

[11] G. Kresse and J. Furthmüler: Phys. Rev., B 54, (1996), 11169.

[12] D. Vanderbilt: Phys. Rev., B 41, (1990), 7892.

[13] J. Perdew and Y. Wang: Phys. Rev., B 45, (1992), 13244.

[14] H. Monkhorst and J. Pack: Phys. Rev., B 13, (1976), 5188. Figure 5. Schematic illustration explaining deviation of surface atoms o a 10-5-1 wire.

Fetching data from Crossref.
This may take some time to load.