9/2006 - present Professor, School of Engineering, Department of Biomedical Engineering 2006 - 2009 Associate Dean for Graduate Education, School of Engineering 9/2004 - 8/2005 Acting Associate Dean, School of Engineering 9/2003 - 8/2006 Associate Professor, School of Engineering, Department of Biomedical Engineering 11/2002 - 8/2003 Assistant Professor, School of Engineering, Department of Biomedical Engineering 10/1999 - 10/2002 Assistant Professor, School of Engineering, Department of Electrical Engineering and Computer Science 8/1996 - 9/1999 Research Assistant Professor, University of Illinois at Urbana-Champaign, Department of Physics 8/1995 - 7/1996 Visiting Lecturer, University of Illinois at Urbana-Champaign, Department of Physics