Abstract
We present our calculations of the Young’s modulus of ZnO nanowires and nanotubes byusing the empirical Buckingham-type potential. Our results indicate that theYoung’s moduli of ZnO nanowires increase as the diameters decrease, and theYoung’s moduli of ZnO nanotubes increase as the thicknesses decrease. Furthermore,we find that such size-dependent elastic properties mainly arise from the lateralfacets of the nanowires and nanotubes. In particular, for a ZnO nanotube witha thin wall, the Coulomb interaction between the ions of the outer and inneratomic layers plays an important role in the Young’s moduli of the surface atomiclayers.
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