Dr. Hagen is interested in energy systems, advanced internal combustion engines, unconventional fuels, applied thermodynamics and fluid mechanics. Unconventional fuels; for example, biomass, tailored liquid hydrocarbons, shale gas, and renewable jet fuel; are integral to a future clean domestic energy portfolio.Dr. Hagen joins OSU-Cascades from Colorado State University where he was an assistant research professor in the Department of Mechanical Engineering.Prior to joining the faculty at CSU, he was a Lead Research Engineer at the Chevron Energy Technology Company where he investigated novel fuels for advanced internal combustion engines. His previous industry experience also includes working as an Application Engineer for Woodward, Inc., a global energy system solution provider.