Mechanical Properties of Molybdenum Disulfide and the Effect of Doping: An in Situ TEM Study
- Aleksander A. Tedstone (1376139)
- David J. Lewis (202920)
- Rui Hao (9775)
- Shi-Min Mao (1376142)
- Pascal Bellon (805185)
- Robert S. Averback (805186)
- Christopher P. Warrens (1376148)
- Kevin R. West (1376151)
- Philip Howard (142602)
- Sander Gaemers (1353303)
- Shen J. Dillon (1376145)
- Paul O’Brien (593387)
Publication date
January 2016
DOIAbstract
Direct observations on nanopillars composed of molybdenum disulfide (MoS<sub>2</sub>) and chromium-doped MoS<sub>2</sub> and their response to compressive stress have been made. Time-resolved transmission electron microscopy (TEM) during compression of the submicrometer diameter pillars of MoS<sub>2</sub>- and Cr-doped MoS<sub>2</sub> (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 MoS<sub>2</sub> 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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