报告介绍 Abstract：Structure and dynamics of complex systems in condensed phase govern their functions which broadly impact biological and materials applications. However, a complete understanding of those processes is hindered by the availability of suitable tools that can resolve atomic motions on molecular timescales. We developed tunable femtosecond stimulated Raman spectroscopy (FSRS) in the mixed time-...

报告介绍 Abstract:　　Heterogeneous catalysis significantly shapes society, as it plays a crucial role in the production of base chemicals, fuels for mobility and specialty chemicals and protection of the environment. Fischer-Tropsch synthesis is an increasingly important process for the production of fuels and chemicals from a variety of feedstock. Our working approach is to combine advanced kinetic and spe...

报告介绍 Abstract：　　The Intergovernmental Panel on Climate Change has set up the global warming of 1.5 degrees goal in 2018. This meeting has urged everyone to take action right away in order to protect our Earth. One of the ultimate solutions towards the global warming is to efficiently utilize the solar energy. Hence an atom-by-atom perspective on the photochemical and photophysical processes is of grea...

报告介绍 Abstract：　　Semiconductor nanocrystals(NCs) with size-tunable luminescence are one of the most interesting materials capturing the interest of researchers over the past decades, and have broad applications in biological imaging, drug delivery, light-emitting devices, solar cells, photo-detectors, and quantum computing. Doping of transition metal ions into semiconductor NCs is a thriving area of na...

报告介绍 报告人介绍：　　张强，2008年毕业于吉林大学化学系，获得学士学位。2013年毕业于美国南卡罗来纳大学无机化学专业，博士学位。同年加入德州农工大学周宏才老师课题组进行博士后研究。于2016年加入华盛顿州立大学化学系成为助理教授，课题组组长，博士生导师。课题组主要研究多孔材料的改性以及在催化中的应用。张老师发表文章四十余篇被引过千次。

报告介绍 报告摘要：　　共价有机框架材料(Covalent Organic Frameworks, COFs)是一类新型的结晶性有机多孔材料，这类材料是由有机小分子结构单元通过共价键的链接方式形成二维平面或者三维立体的网络框架结构。二维COFs具有周期性排列的结构单元,并且是由轻元素原子（主要是C、H、O、N）构成的结晶性有机多孔聚合物，因而具有低密度，高稳定性，规则的孔道结构以及高比表面积等一系列优点，使其在诸多领域具有广泛的应用前景。报告将从二维CO...

报告介绍 Abstract:　　Energy materials are at the heart of various renewable energy technologies that are revolutionizing our future. Understanding and predicting excited states and their dynamics is central to many important energy materials problems, including photovoltaics, photocatalysis, photodetectors, photo-synthesis, optoelectronics, light-emitting diodes, and biosensors, to name but a few. In this t...

报告介绍 Abstract:　　Light-matter interaction is a long-lasting theme in condensed matter physics, which propels the advance of optoelectronics. Photodetection in different wavelength regimes is the foundation of a wide range of sensing, imaging, medical and surveillance technologies. Here I will discuss the use of transition-metal oxides and their heterostructures with proper bandgaps and architectures to ...

报告介绍 Abstract:　　Based on the recent theory of built-in potential [1], we develop a scheme for intrinsic band alignment where the vacuum-level position in an infinite solid can be identified and used as the common energy reference among dissimilar bulk materials [2]. Unique to this theory is the recognition of an orientation dependence of bulk energies with respect to the vacuum due to bulk quadrupole –...

报告介绍 Abstract：　　The topological nature of a material is not only reflected on the surfaces or along the edges but also hidden inside the material in the bulk electronic structure. In this talk, I will describe how the bulk-sensitive magneto-infrared spectroscopy technique can be used to probe the electronic structure topology. I will use transition-metal pentatellurides (ZrTe5, Dirac semimetals) and m...

报告介绍 Abstract：　　We  will first review the recent  progress in SYK models and their global impacts in quantum gravity, QCD, condensed matter physics and quantum information science.   Then we will outline the results achieved in our recent works in [1-5]. This colloquium is pedagogical, so should be accessible to any graduate students who are interested in working on this still rapi...

报告介绍 Abstract:　　Great progress has been achieved in the software implementation of artificial intelligence recently, where "deep learning" is a representative example. The hardware devices for the brain-inspired computing, on the other hand, is just an emergent field of research. The magnetic nanostructures that have been extensively studied in spintronics, such as magnetic tunnel junctions, ...

报告介绍 Abstract：　　The accuracy and computational efficiency of the widely used Kohn-Sham density functional theory (DFT) are limited by the approximation to its exchange-correlation energy Exc. The earliest local density approximation (LDA) overestimates the strengths of all bonds near equilibrium (even the vdW bonds). By adding the electron density gradient to model Exc, generalized gradient approximat...

报告介绍 Abstract：　　In this talk, I am going to summarize our recent progresses towards design of effcient oxygen electrocatalysts for various electrochemical energy conversion and storage applications. The design strategy includes: 1. How to experimentally determine binding strength of reactive intermediates. 2. How to tune binding strength of reactive intermediates by surface engineering. 3. How to brea...

报告介绍 Abstract：　　Exploring new oxygen electrocatalysts for oxygen reduction and evolution reactions (ORR and OER) has been one of hottest topics in recent years. This tutorial presentation will introduce recommended practices for measuring the oxygen electrocatalysts. The objective of this presentation is to help new students and learners to master the basic knowledge and lab skills for reliable electr...

报告介绍 报告摘要:　　模拟自然界光合作用是太阳能光化学利用的重要手段之一。构筑人工模拟光捕获体系并研究其中的能量转换过程和调控机制对发展高效太阳能光化学转换体系具有重要意义，人工光捕获体系除了实现模拟天然光捕获体系的能量转换过程之外，还能实现光子上转换、激子裂分等天然体系所不具备的功能，使得人工光捕获体系能够为太阳能光化学转换提供丰富的途径。本报告将汇报我们近年来在人工光捕获体系光物理研究的系列进展，旨在为...