Stephen Exarhos is a mechanical engineering Ph.D. student in Dr. Lorenzo Mangolini’s group at the University of California, Riverside, where he completed his MS titled “Aerosol Spray Pyrolysis Synthesis of CZTS Nanostructures” in 2015. His primary research focus is the synthesis of copper-zinc-tin-sulfide and other semiconducting nanoparticles and thin films for photovoltaic applications. His expertise lies in material synthesis and characterization.