Associate Dean for Research (2011 - present) University of Utah, College of Engineering, Salt Lake City, Utah Professor (2009 - present) University of Utah, Dept. of Chemical Engineering, Salt Lake City, Utah Assoc iate Director (2011 - present) Institute for Clean and Secure Energy, University of Utah, Salt Lake City, Utah Associate Professor (2001 - 2009) University of Utah, Dept. of Chemical Engineering, Salt Lake City, Utah Visiting Scholar (March/April 2001) Tsin ghua University, Dept. of Thermal Engineering, Beijing, People’s Republic of China: Research Associate Professor (2000 - 2001) University of Utah, Dept. of Chemical and Fuels Engineering, Salt Lake City, Utah Research Assistant Professor (1998 - 2000) Unive rsity of Utah, Dept. of Chemical and Fuels Engineering, Salt Lake City, Utah