Transition metal dichalcogenide (TMD) monolayers and heterostructures have emerged as
a compelling class of materials with transformative properties that may be harnessed for …

Epitaxial growth, a crystallographically oriented growth induced by the chemical bonding
between crystalline substrate and atomic building blocks, has been a key technique in the …

The last decade has witnessed significant progress in two-dimensional van der Waals (2D
vdW) materials research; however, a number of challenges remain for their practical …

We describe a setup for time-resolved photoemission electron microscopy with aberration
correction enabling 3 nm spatial resolution and sub-20 fs temporal resolution. The latter is …

The realization of the unusual properties of two-dimensional (2D) materials requires the
formation of large domains of single-layer thickness, extending over the mesoscale. It is …

The thickness and interfacial geometry of hexagonal boron nitride (hBN) films grown by
chemical vapor deposition on polycrystalline nickel foils is studied using low-energy electron …

The properties of Van der Waals (VdW) heterostructures are determined by the twist angle
and the interface between adjacent layers as well as their polytype and stacking. Here, the …

Photo electron emission microscopy (PEEM), going back to the earliest days of electron
microscopy, and low-energy electron microscopy (LEEM), successfully deployed since the …

In this work, low-energy electron microscopy is employed to probe structural as well as
electronic information in few-layer WSe 2 on epitaxial graphene on SiC. The emergence of …

This thesis demonstrates that layered heterostructures of two-dimensional crystals
graphene, hexagonal boron nitride, and transition metal dichalcogenides provide new and …