Speaker

John S. Tse

加拿大萨斯喀彻温大学

Date＆Time

2022.04.21（Thur）AM 10:00

Location

Zoom Meeting ID：950 680 6742 Password：2022

https://m.koushare.com/lives/room/596793

Reporter

Dr. Tse joined the National Research Council in 1980 and became a Principal Research Officer and Leader of the Theory and Computation Program. His interest in high-pressure science started in early 1990 when he explained the phenomenon of pressure amorphization of crystalline solids. For this work, he was awarded the 1995 Chemical Society of Canada Noranda (later the Keith Laidler) award for a physical chemist under 45. Since moving to the University of Saskatchewan in 2004 as a Canada Research Chair, he focused on the superconductivity behaviour of dense hydrogen alloys and magnetic single-molecule radical solids under compression. He was elected to a Fellow of the Royal Society, Canada in 2018. Dr. Tse has published over 590 articles, including 33 reviews and book chapters on diverse subjects. His h-index is 75 with over 20,600 citations. Many of the papers appeared in the most prestigious scientific journals such as Nature (11), Nature Mater. (1), Nature Chem. (1), Nature Comm. (2), Science (3), Sci. Adv. (2), Phys. Rev. Letts. (35), Proc. Natl. Acad. Sci. (11), J. Am. Chem. Soc. (16). He has presented over 300 lectures at international conferences and workshops. He served on many national and international committees and as a member of several journals' editor boards.

Abstract

In this presentation, I will highlight some recent progress on high-pressure research in my group. We have resolved several important outstanding problems, such as the proposal on the existence mixed valence states in lanthanide compounds, the Zintl-Klemen charge-transfer model to describe the structure and bonding of high-pressure structures and phenomena in time-dependent pressure-induced amorphization of ice. These studies involve both state-of-the-art experiments and theoretical calculations. I will also discuss new results on the chemistry and transport properties of mineral melts and a recent finding on the initial formation of deep-earth diamond precursors near the core-mantle boundary.