Recent advances in the growth, doping and characterization of III–V nitride thin films -- Native defects and impurities in GaN -- Semimagnetic semiconductor heterostructures and superlattices -- Selection rules for spectroscopy of quantum dots -- Spectroscopy on field-effect induced quantum wires and quantum dots -- Self-ordered quantum dots: A new growth mode on high-index semiconductor surfaces -- Pseudomorphic InAs/GaAs quantum dots on low index planes -- GaAs/AlGaAs quantum wire lasers and other low-dimensional structures fabricated by cleaved edge overgrowth -- Dynamics of optical excitations in quantum dots of wide-gap semiconductors -- Investigation of the coulomb blockade in a parallel quantum dot geometry -- Zero-bias anomalies and boson-assisted transport through small quantum dots -- Single-electron trapping at semiconductor interfaces -- Transport studies of AlxGa1?x As/GaAs quantum heterostructures using BEEM -- Atomic resolution with a megavolt electron microscope -- Surface modifications due to strain relaxation in lattice-mismatched heteroepitaxy -- Scanning probe microscopy with “chemical sensitivity”.