二硫化钼的力学性能及掺杂效应：原位透射电子显微镜研究
Mechanical Properties of Molybdenum Disulfide and the Effect of Doping: An in Situ TEM Study.
作者信息
Tedstone Aleksander A, Lewis David J, Hao Rui, Mao Shi-Min, Bellon Pascal, Averback Robert S, Warrens Christopher P, West Kevin R, Howard Philip, Gaemers Sander, Dillon Shen J, O'Brien Paul
机构信息
International Centre for Advanced Materials (ICAM; Manchester Hub), Schools of Materials and Chemistry, University of Manchester , Manchester M13 9PL, United Kingdom.
International Centre for Advanced Materials (ICAM; UIUC Spoke), Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana-Champaign 104 South Goodwin Avenue, MC-230, Urbana, Illinois 61801, United States.
出版信息
ACS Appl Mater Interfaces. 2015 Sep 23;7(37):20829-34. doi: 10.1021/acsami.5b06055. Epub 2015 Sep 9.
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.
对由二硫化钼（MoS2）和铬掺杂的MoS2组成的纳米柱及其对压缩应力的响应进行了直接观察。在对直径为亚微米的MoS2和铬掺杂的MoS2（铬含量：0、10和50原子%）柱进行压缩时，通过时间分辨透射电子显微镜（TEM）可以观察到材料的变形过程，并且可以将其与对施加负载的机械响应直接关联起来。向MoS2中添加铬将失效模式从塑性变形转变为灾难性脆性断裂，随着铬含量的增加，这种效应更加明显。
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