Dr. Xiaoji Xu is currently a professor in the Department of Chemistry at Stony Brook University. Prior to independent research career, he was a postdoctoral fellow at the University of Toronto with Dr. Gilbert C. Walker. He received his B.S. from Peking University in 2004 and Ph.D. from The University of British Columbia in 2009. He started as an assistant professor and then associate professor at Lehigh University before joining Stony Brook. His current research focuses are on nanoscale chemical imaging, laser spectroscopy, and innovations in scanning probe microscopy for chemical and material measurement. He has published more than 60 peer-reviewed articles and holds several licensed patents on AFM-based infrared microscopy. He is a senior member of the National Academy of Inventors. He was selected as a Beckman Young Investigator in 2018 and Sloan Research Fellow in 2020. He is also a recipient of the NSF CAREER in 2019, Camille Dreyfus Teacher-Scholar Award in 2021, and Richard van Duyne Award in 2025.