23 research outputs found
Mechanical Properties of Molybdenum Disulfide and the Effect of Doping: An in Situ TEM Study
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