2023-present Director and Principal Investigator of the NSF Science and Technology Center for Complex Particles and Particle Systems (COMPASS)
2023-2024 Global Chair, University of Bath, United Kingdom;
2023-present Visiting Professor, Imperial College, London, Department of Aeronautical Engineering, London, United Kingdom
2020-present Irving Langmuir Distinguished University Professor of Chemical Sciences and Engineering, University of Michigan, Ann Arbor, MI
2012-present Joseph B. and Florence V. Cejka Professor of Engineering, University of Michigan, Ann Arbor, MI
2008-2012 Professor, Department of Chemical Engineering, Department of Materials Science and Engineering,
Department of Biomedical Engineering, Department of Macromolecular Science and Engineering,
University of Michigan, Ann Arbor, MI
2003-2008 Associate Professor, Department of Chemical Engineering, University of Michigan, Ann Arbor, MI
2001-2003 Associate Professor, Chemistry Department, Oklahoma State University, Stillwater, OK
1996-2001 Assistant Professor, Chemistry Department, Oklahoma State University, Stillwater, OK
1997, 1999 Visiting Professor, Hamburg University, Hamburg, Germany
1992-1996 Postdoctoral Associate, Chemistry Department, Syracuse University, Syracuse, NY