The structure of elemental and molecular clusters -- The fractional quantum hall effect -- Lattice distortion, elastic interaction, and phase transitions of hydrogen in metals -- Inelastic electron tunneling spectroscopy -- Optical properties of discontinuous thin films and rough surfaces of silver -- Charge transport in conducting polymers -- Transport and recombination in hydrogenated amorphous silicon -- Negative-U properties for defects in solids -- Chalcogens as point defects in silicon -- On the surface physics of III–V compound semiconductors -- High resolution sputter depth profiling of solid interfaces and thin film structures -- Inelastic light scattering in semiconductor heterostructures -- High-speed homo- and heterostructure field-effect transistors -- Miniature refrigerators for cryoelectronic sensors.