Muhammad Usman does pioneering research in the area of III-V-based light-emitting diodes and laser diodes in Pakistan. He works on the energy economics of solid-state lighting in developing countries especially South Asia. His research interests include characterization and modeling of light-emitting diodes, laser diodes, and micro/nanostructured devices, energy conservation, solid-state lighting, electronic engineering, engineering physics, piezotronics and optical engineering.