Direct tensile tests of individual WS2 nanotubes

I. Kaplan-Ashiri, S. R. Cohen, K. Gartsman, R. Rosentsveig, V. Ivanovskaya, T. Heine, G. Seifert, H. D. Wagner, R. Tenne

Research output: Contribution to journalConference article

13 Citations (Scopus)

Abstract

The Young's modulus of WS2 nanotubes is an important property for various applications. Measurements of the mechanical properties of individual nanotubes are challenging because of the small size of the tubes. Lately, measurements of the Young's modulus by buckling of an individual nanotube using an atomic force microscope1 resulted in an average value of 171GPa. Tensile tests of individual WS: nanotubes were performed experimentally using a scanning electron microscope and simulated tensile tests of MoS2 nanotubes were performed by means of a density-functional tight-binding (DFTB) based molecular dynamics (MD) scheme. Preliminary results for WS2 nanotubes show Young's modulus value of ca,162GPa, tensile strength value of ca. 13GPa and average elongation of ca. 12%. MD simulations resulted in elongation of 19% for zigzag and 17% for armchair MoS single wall nanotubes. Since MoS2 and WS2 nanotubes have similar structures the same behavior is expected for both, hence there is a good agreement regarding the elongation of WS2 nanotubes between experiment and simulation.

Original languageEnglish
Pages (from-to)4097-4102
Number of pages6
JournalMaterials Science Forum
Volume475-479
Issue numberV
Publication statusPublished - 2005 Jan 1
EventPRICM 5: The Fifth Pacific Rim International Conference on Advanced Materials and Processing - Beijing, China
Duration: 2004 Nov 22004 Nov 5

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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    Kaplan-Ashiri, I., Cohen, S. R., Gartsman, K., Rosentsveig, R., Ivanovskaya, V., Heine, T., Seifert, G., Wagner, H. D., & Tenne, R. (2005). Direct tensile tests of individual WS2 nanotubes. Materials Science Forum, 475-479(V), 4097-4102.