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学术报告（3月29日）
主持人：姚道新 教授
欢迎广大师生踊跃参加！
报告内容：
This talk shares our recent efforts [1-3] toward resolving atomistic, dynamic, local, and quantitative information regarding bond relaxation and electron energetics pertaining to undercoordinated atoms of point defects, terrace edges, monolayer skins, nanocrystals and heterocoordinated impurities and interfaces. We have used the developed strategies to clarify, correlate, formulate, and quantify the following from the perspective of irregular-coordination induced bond relaxation and its associated quantum entrapment and polarization:
1. Energy levels of an isolated atom and their bulk shifts
2. Catalytic nature of Pt and Rh adatoms and Cu/Pd and Ag/Pd alloys
3. Edge-discriminative generation of graphitic Dirac-Fermi polarons (see figure)
4. Size dependence and emergence of anomalies for nanocrystals
Complementing STM/S and photoelectron spectroscopy, this set of approaches is extremely useful in monitoring the energetic, electronic, and geometric behavior of irregularly coordinated atoms under external stimuli. Further extension may lead to multi-field-resolved Bond-Electron-Phonon-Photon Spectrometrics, promoting undercoordination Physics and heterocoordination Chemistry.
报告人简介：孙长庆，辽宁建昌人。新加坡南洋理工大学电气与电子工程学院副教授，英国皇家化学会和物理学会Fellow。键弛豫理论创始人。在水与低维固体和界面研究中作出许多原创性性贡献。发表专著两部，SCI论文330余篇，引用7000余次，H指数43。
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