Distinguished Visiting Professor, University of Johannesburg

Chair, Department of Medical Physics, University of Wisconsin-Madison

Chair in Pharmaceutical Technology, Queen's University Belfast

Professor of Physics, The University of Texas at Arlington

McMaster University (retired)

University of Toronto

Associate Professor at Ghent University, Belgium

University of Minnesota

Chimie ParisTech, PSL University, CNRS, Institute of Chemistry of Life and Health Sciences

Professor of Biomedical Sciences, University of the Pacific