| Nanodisturbance deformation mode in free-standing nanowires, micropillars and nanowires serving as structural elements of bulk nanocomposites is theoretically described for various metallic and covalent materials having face-centered cubic crystal lattices. This deformation mode represents formation of near-surface nanodisturbances, nanoscopic areas of ideal plastic shear with tiny shear vectors in subsurface areas of nanowires and micropillars. The critical stress is calculated which is needed for the nanodisturbance deformation mode to occur in nanowires/micropillars having square cross sections. This stress is calculated as a function of the nanowire/micropillar cross section size d ranging from 1 to 500 nm in the cases of metals (Al, Au, Ni, Pd) and covalent materials (Si, SiC). Sensitivity of the nanodisturbance deformation mode to geometric and material parameters of nanowires and micropillars is discussed. |
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