Tiancheng Pu (IMAGE) Lehigh University Caption Tiancheng Pu is a Lehigh University PhD student in its Operando Molecular Spectroscopy and Catalysis Research Lab, advised by Professor Israel Wachs. Credit Tiancheng Pu/Lehigh University Usage Restrictions Credited, contextual, noncommercial use only. 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.