Robert Wolkow, University of Alberta (IMAGE) University of Alberta Caption Robert Wolkow, University of Alberta physics professor and the Principal Research Officer at Canada's National Institute for Nanotechnology. Credit John Ulan for the University of Alberta Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.