TY - RPRT TI - High Electron Mobility Transistor Structures on Sapphire Substrates Using CMOS Compatible Processing Techniques AU - Mueller, Carl AU - Alterovitz, Samuel AU - Croke, Edward AU - Ponchak, George PY - 2004 UR - https://ntrs.nasa.gov/citations/20050203801 ID - 20050203801 ER -