Mechanical Properties of Molybdenum Disulfide and the Effect of Doping: An in Situ TEM Study | Zendy

Aleksander A. Tedstone | Zendy; David J. Lewis | Zendy; Rui Hao | Zendy; Shimin Mao | Zendy; Pascal Bellon | Zendy; R. S. Averback | Zendy; Christopher P. Warrens | Zendy; Kevin R. West | Zendy; Philip Howard | Zendy; Sander Gaemers | Zendy; Shen J. Dillon | Zendy; Paul O’Brien | Zendy

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Mechanical Properties of Molybdenum Disulfide and the Effect of Doping: An in Situ TEM Study

Author(s) -

Aleksander A. Tedstone,

David J. Lewis,

Rui Hao,

Shimin Mao,

Pascal Bellon,

R. S. Averback,

Christopher P. Warrens,

Kevin R. West,

Philip Howard,

Sander Gaemers,

Shen J. Dillon,

Paul O’Brien

Publication year - 2015

Publication title -

acs applied materials and interfaces

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.535

H-Index - 228

eISSN - 1944-8252

pISSN - 1944-8244

DOI - 10.1021/acsami.5b06055

Subject(s) - materials science , molybdenum disulfide , nanopillar , brittleness , molybdenum , chromium , transmission electron microscopy , doping , deformation (meteorology) , composite material , compression (physics) , metallurgy , nanostructure , nanotechnology , optoelectronics

Direct observations on nanopillars composed of molybdenum disulfide (MoS2) and chromium-doped MoS2 and their response to compressive stress have been made. Time-resolved transmission electron microscopy (TEM) during compression of the submicrometer diameter pillars of MoS2- and Cr-doped MoS2 (Cr: 0, 10, and 50 at %) allow the deformation process of the material to be observed and can be directly correlated with mechanical response to applied load. The addition of chromium to the MoS2 changed the failure mode from plastic deformation to catastrophic brittle fracture, an effect that was more pronounced as chromium content increased.

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