报告题目

From Cold to Ultracold, What Can We Learn from Molecular Collisions?

报告人

Hua Guo教授

报告人单位

Department of Chemistry and Chemical Biology, University of New Mexico

报告时间

2022年9月16日10:00—11:00

报告地点

物质科研楼B楼1301会议室

报告形式

线上报告 zoom会议号：959-1501-1541；密码：494534

主办单位

合肥微尺度物质科学国家研究中心 国际化学理论中心（ICCT）、复杂化学体系多尺度动力学学科创新引智基地

报告介绍

报告摘要：Molecular interactions and dynamics under cold and ultracold conditions have not only fundamental importance, but also critical technological implications. Recent advances in experimental techniques have enabled such investigations in temperature ranging from a few Kelvin (cold) to nano-Kelvin (ultracold). At these temperatures, quantum mechanics often dominates, precluding a classical description of the collision dynamics. Our understanding of molecular interactions has been transformed by these recent advances in cold and ultracold collisions. In this talk, I will discuss theoretical studies of the ultracold (~250 nK) reaction between two KRb molecules^1-3 and the stereodynamics in collisions between two hydrogen molecules (and their isotopomers) at collision temperatures near 1 K.^4-6

References

(1) Liu, Y.; Hu, M.-G.; Nichols, M. A.; Grimes, D. D.; Karman, T.; Guo, H.; Ni, K.-K. Nat. Phys. 2020, 16, 1132–1136.

(2) Liu, Y.; Hu, M.-G.; Nichols, M. A.; Yang, D.; Xie, D.; Guo, H.; Ni, K.-K. Nature 2021, 593, 379-384.

(3) Yang, D.; Huang, J.; Hu, X.; Xie, D.; Guo, H. J. Chem. Phys. 2020, 152, 241103.

(4) Croft, J. F. E.; Balakrishnan, N.; Huang, M.; Guo, H. Phys. Rev. Lett. 2018, 121, 113401.

(5) Jambrina, P. G.; Croft, J. F. E.; Guo, H.; Brouard, M.; Balakrishnan, N.; Aoiz, F. J. Phys. Rev. Lett. 2019, 123, 043401.

(6) Zuo, J.; Croft, J. F. E.; Yao, Q.; Balakrishnan, N.; Guo, H. J. Chem. Theo. Comput. 2021, 17, 6747-6756.

报告人简介：Prof. Hua Guo received his Bachelor degree from Chengdu Institute of Electronic Engineering in 1982, Master degree from Sichuan University in 1985 and PhD at University of Sussex in 1988 with John Murrell. After working with Prof. G. Schatz as a Postdoctoral Fellow from 1988-1990, he became an Assistant Professor at University of Toledo where he was promoted to Associate Professor since 1995. In 1998, he moved to University of New Mexico and became a full Professor since 2001. He was honored as Distinguished Professor (since 2015), elected to American Physical Society (APS) Fellow (2013) and fellow of American Association for the Advancement of Science (2021), and received Humboldt Research Award (2019). Prof. Guo has published over 600 publications, including Nature (1), Science (7), Nat. Chem. (5), Nat. Phys. (1), Nat. Cat. (1), Sci. Adv. (4), Nat. Commun. (3) and many more, with ~22000 citations and H-index of 74. His interests cover a wide range of theoretical and computational studies of Astrochemistry, Atmospheric Chemistry, Combustion Chemistry, Plasma Chemistry, Cold Collisions, Heterogeneous Catalysis and Materials Chemistry