His main research interests are the study of thermal spray coatings, including superhydrophobic coatings, thermal barriers, corrosion and wear resistant coatings. He has performed comprehensive studies on the flow, temperature, and electromagnetic fields within arcs and RF inductively coupled plasmas . Professor Mostaghimi has done extensive simulation of the dynamics of droplet impact and solidification in thermal spray processes and automotive spray painting as well as the design of novel DC and RF plasma torches.