Molybdenum Disulfide (MoS2) is a member of the transition metal dichalcogenide (TMD)  family of semiconductors. TMDs are layered materials weakly bounded through Van der Waals interactions while the individual monolayers are held together by ionic-covalent bonding. In this simulation we look at the electronic structure of this semiconductor and compare with the electronic band structure of an individual monolayer  (look at the post titled "Electronic Structure of Monolayer MoS2").