Scanning Transmission Electron Microscopy (STEM) Study on Novel Two-dimensional Materials

Two-dimensional materials with typical characteristics of atomic layer thickness, weak inter layer Van de Walls interaction and large surface areas are emerging superstar for materials science, physics and chemistry. For example, the Nobel prize winning material graphene has demonstrated numerous promising applications ranging from photonics, catalysis, sensors, flexible electronics etc. Transition metal dichalcogenides overcome the limitation of zero bandgap in graphene, is expected to bring in new applications in nanoelectronics, single photon emitters, spintronics etc.