Spectroscopic Diagnostics Inc. (SDI) is an engineering corporation engaged in R&D project work and technical consulting services. In business for ~10 years, SDI serves a broad US and international customer base operating in the educational, research and commercial arenas. SDI specialties include but are not limited to: Vacuum Science Spectroscopy Motion Control Optomechanical Assemblies Design/Solid Modeling Heat Transfer Computational Fluid Dynamics (CFD)