||Theory of semiconductor heterostructures, including growth modes, equilibrium modeling and critical layer thickness, plastic flow modeling and kinetically-limited lattice relaxation. Growth of semiconductor heterostructures, including multilayers, superlattices, quantum wells, quantum wires, and quantum dots by vapor phase transport, physical transport, and other techniques. Characterization, including in-situ characterization, diffraction, microscopic, electrical, optical, and other techniques. Strain and defects in semiconductor heterostructures. Device applications, including electronics, photonics, energy conversion, and sensors.