Dr. Zhijun Ning, University of Toronto (IMAGE) University of Toronto Caption This is a photo of Dr. Zhijun Ning in the lab, holding a film coated with colloidal quantum dots. Credit Roberta Baker 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.