(color online) (a) MoS₂ on a (001) Au surface with a rotation angle of 0°. (b) MoS₂ on a (110) Au surface with a rotation angle of 90°. (c) MoS₂ on a (111) Au surface with a rotation angle of 30°. Mo and S atoms are shown in purple and yellow respectively, and Au atoms are shown in cyan, brown, and red for the first, second, and third layers, respectively. (d) Binding energy of MoS₂ on different crystal Au surfaces. Reprinted with permission from Ref. [69], copyright (2016) by the Springer.