NTU scientists invents self-tinting self-powered window (IMAGE) Nanyang Technological University Caption Here are (clockwise from bottom) NTU professor Sun Xiaowei, research fellow Liu He, and Ph.D. student Zheng Ke with their self-tinting window. Credit NTU Singapore Usage Restrictions For this story only 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.