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Liang Fang, #, , Xu Hejun, #, , Wu Xing, †, Wang Chaolun, , Luo Chen, , Zhang Jian,
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(color online) Effect of strain on MoS2 films and their Raman signals. (a) Schematic of the three-point bending method for strain measurement. (b) Raman spectra for mono- and bilayer MoS2 with strain applied. The
E
′
(
E
2g
1
)
mode splits into two modes under the applied tensile strain. Reproduced with permission from Ref. [86]. Copyright 2013, American Physical Society. (c) Peak positions of the
E
2g
1
and A1g modes as functions of biaxial strain for 1L, 2L, and 3L MoS2. The inset shows the
E
2g
1
and A1g Raman modes of unstrained MoS2. Reproduced with permission from Ref. [87]. Copyright 2016, American Chemical Society. (d) Raman spectra of trilayer MoS2 under varying compressive strain. Both the
E
2g
1
and A1g modes blueshift for the compressive strain increasing from 0 to
0.2
%
. Reproduced with permission from Ref. [88]. Copyright 2013, American Chemical Society.
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