Electron diffraction tomography (EDT) is a novel technique, which allows single crystal electron diffraction data collections on crystal of size smaller the 1 micron. In our laboratory we have configured a transmission electron microscope Zeiss Libra 120 as a diffraction station for EDT. We are able to collect 3D electron diffraction data on a variety of different materials with the following peculiarities: the diffraction patterns can be collected in energy filtered mode, the diffraction pattern are collected in nanodiffraction mode with a minimum illuminated area of 150 nm in diameter, the patterns can be collected in parallel standard illumination or in precession mode.
The mission of 2D Materials Engineering is to synthesize, investigate, and tailor two-dimensional materials and their heterostructures to pave the way for a new era of transparent and flexible technology. The discovery of graphene has led to a resurgence of interest in other two-dimensional materials, and an ever-growing portfolio of atomic sheets, (such as transition metal dichalcogenides (TMDs), hexagonal boron nitride (h-BN) and layered oxides) is being actively theoretically and experimentally studied. Van der Waals heterostructures are built much like “Lego” at an atomic-scale, by vertically stacking 2D layered materials.