Transition from Coulomb Blockade to Resonant Transmission in a MoS$_{2}$ Nanoribbon

We have measured a side-gated nanoribbon of MoS$_{2}$ at low temperature, and observed the transition from Coulomb blockade to resonant transmission when the Fermi level is tuned with a gate. We show that near the crossover between these regimes, the entire nanoribbon acts as a single quantum dot. Our findings may shed light on quasi-ballistic transport in the material. We also discuss the quantum dot formation in terms of a substrate-induced disorder potential, and consider other possible origins of disorder.