Mechanical properties of multilayer hexagonal silicon under uniaxial tension
YZ He and H Li and FX Wei and JQ Qi and QK Meng and YW Sui, COMPUTATIONAL MATERIALS SCIENCE, 134, 153-159 (2017).
Molecular dynamics simulations have been performed to investigate the mechanical properties of the two-dimensional silicon films composed of plane and buckled layers. The results clearly show that the Young's modulus in the zigzag direction is slightly smaller than that in the armchair direction, but the fracture stress and the fracture strain in the zigzag direction are both larger than those in the armchair direction. Moreover, it is found that the silicon film with plane layers has larger Young's modulus and fracture stress than the buckled layer film, but the latter has larger fracture strain due to the stress induced phase transition. (C) 2017 Elsevier B.V. All rights reserved.
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