报告题目: Atomistic Insights into Deep Planetary Materials: From Fast Ion Conduction to Acoustic Anelasticity

报  告 人：新加坡南洋理工大学理学院院长 Simon Redfern教授

报告时间: 2025年11月6日，上午10:30-11:30

报告地点：四川大学望江校区西五教 原子与分子物理研究所319会议室

摘要: Computational simulation provides a powerful means of linking atomic-scale processes to the macroscopic behaviour of planetary materials under extreme conditions. In this talk, I will survey recent work from the Environmental Materials Group at NTU Singapore exploring the structure, transport, and mechanical properties of minerals and alloys relevant to planetary interiors. These include computational structure prediction in the N–H–Si–O system, with implications for gas giant chemistry; modelling of p-block element alloying with iron to probe chalcophile–siderophile transitions at core conditions; and the role of ion mobility in governing mechanical response and acoustic attenuation in deep planetary materials. I will conclude by outlining emerging opportunities provided by machine learning and AI approaches for predicting and interpreting the properties of matter at planetary extremes. 

报告人简介: Simon Redfern is Dean of the College of Science and President’s Chair in Earth Sciences at Nanyang Technological University, Singapore. Trained as a mineral physicist, his research lies at the intersection of solid-state physics, materials science, and geoscience, focusing on the behaviour of matter under extreme conditions. Before joining NTU, he was Professor and Head of Earth Sciences at the University of Cambridge. His recent work combines first-principles and atomistic simulations with experimental studies to probe dynamics, ionic transport, and elasticity in minerals and alloys—linking atomic-scale processes to the macroscopic properties of planetary interiors and functional materials on Earth.