The ultrathin of two-dimensional crystals offers the possibility to use external strain to manipulate, in a controlled manner, their optical and electronic properties. Here, we utilized strain engineering to manipulate the electronic and optical properties of 2D transition metal dichalcogenide materials through controlled synthesis on the patterned substrate. How the curved surface affects the nucleation and growth pathway of 2D crystals will be discussed. The benefits of strain engineering in 2D crystals for applications in nano-electronics and optoelectronics will be discussed.
This work was supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences (BES), Materials Sciences and Engineering Division and performed in part as a user project at the Center for Nanophase Materials Sciences, which is a DOE Office of Science User Facility.