On September 2, 2025, Liu Xinfeng, a researcher from the National Center for Nanoscience and Technology, was invited to our university to conduct academic exchanges with teachers and students from the School of Future Technology. Liu Xinfeng delivered an academic report titled "Micro-area Ultrafast Spectroscopy and Applications". The report was chaired by Professor Chen Ke, and some teachers and graduate students from the school attended the report session.
In his report, Prof. Liu Xinfeng highlighted the introduction of micro-area ultrafast spectroscopy and its applications. Ultrafast spectroscopy serves as a crucial technical tool for characterizing properties such as charge carrier transport, finding extensive applications in fields like materials science, information technology, physics, and chemistry. In recent years, Liu Xinfeng has dedicated himself to developing spectroscopic measurement systems with spatial, temporal, and momentum resolutions, exploring carrier characteristics in semiconductor material systems, and laying a significant foundation for a deeper understanding of their optoelectronic properties and the performance optimization of related devices. This report primarily introduces advancements in carrier mobility, electron-phonon coupling, and the spectroscopic characteristics and related carrier dynamics of interface-induced nanoscale semiconductor materials, all based on micro/nano ultrafast spectroscopic imaging.
Introduction to the presenter:
Liu Xinfeng, a researcher under the "Hundred Talents Program" of the Chinese Academy of Sciences, serves as a project leader and the director of science and technology at the National Center for Nanoscience and Technology. He graduated from Northeast Normal University in 2007 and obtained his Ph.D. from the National Center for Nanoscience and Technology in 2011. From 2011 to 2015, he conducted postdoctoral research at Nanyang Technological University in Singapore. In 2015, he joined the National Center for Nanoscience and Technology through the Overseas Talent Program of the Chinese Academy of Sciences. In 2021, he received support from the Talent Program of the Organization Department of the CPC Central Committee, and in 2023, he was funded by the National Natural Science Foundation of China's Outstanding Youth Program. His research focuses on high spatiotemporal resolution ultrafast dynamics and related physicochemical properties. In recent years, he has published over 300 research papers in journals such as Science, Nat. Mater., Sci. Adv., Nat. Commun., and Nano Lett., with a total citation count exceeding 25,000. He serves as a reviewer for international academic journals such as Nature, Nat. Nanotech., Sci. Adv., and Nano Lett. Additionally, he is a member of the editorial board of the Journal of Physics: Photonics and a young editorial board member for Frontiers of Physics, InfoMat, and Materials Today Physics.
