Daniel Xu with 2-D Sensor (IMAGE) IOP Publishing Caption Here is Daniel Xu with 2-D sensor. Credit (c) Andreas Tairych, CC BY SA Usage Restrictions Use under CC BY SA licence. 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.