Atomistic Processes during Quantum Dot Formation -- Quantum Dots in the InAs/GaAs System -- First-Principles Study of InAs/GaAs(001) Heteroepitaxy -- Formation of Two-Dimensional Si/Ge Nanostructures Observed by STM -- Diffusion, Nucleation and Growth on Metal Surfaces -- The Stranski-Krastanov Transition -- The Mechanism of the Stranski-Krastanov Transition -- Off-Lattice KMC Simulations of St…