On the mechanical behavior of WS2 nanotubes under axial tension and compression.

ABSTRACT: The mechanical properties of materials and particularly the strength are greatly affected by the presence of defects; therefore, the theoretical strength ( approximately 10% of the Young's modulus) is not generally achievable for macroscopic objects. On the contrary, nanotubes, which are almost defect-free, should achieve the theoretical strength that would be reflected in superior mechanical properties. In this study, both tensile tests and buckling experiments of individual WS(2) nanotubes were carried out in a high-resolution scanning electron microscope. Tensile tests of MoS(2) nanotubes were simulated by means of a density-functional tight-binding-based molecular dynamics scheme as well. The combination of these studies provides a microscopic picture of the nature of the fracture proc

SUBMITTER: Kaplan-Ashiri I 

PROVIDER: S-EPMC1334634 | biostudies-literature | 2006 Jan

REPOSITORIES: biostudies-literature