Researchers have made advancements in creating wafer-scale vertical van der Waals heterostructures, with various studies focusing on different aspects such as uniform epitaxy, epitaxial growth, and transfer of 2D films. These developments have potential applications in 2D electronics, including the creation of gate-all-around nanosheet field effect transistors and two-dimensional circuits. The research appears to be exploring different materials and techniques, including metal-organic chemical vapor deposition and van der Waals integration.