Rui Xu (IMAGE) Rice University Caption Rui Xu, a Rice University materials science and nanoengineering student, is a lead author on a study that shows strontium titanate has the potential to enable efficient photonic devices at frequencies from 3-19 terahertz. Credit (Photo by Gustavo Raskosky/Rice University) Usage Restrictions Must credit Gustavo Raskosky/Rice University. License Original 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.