报告介绍 报告摘要：　　结构是空间内元素关系的抽象，从欧几里得到希尔伯特空间，从数域到拓扑空间，对空间内优异结构的渴求与不断复杂的空间体系似乎是一对难以调和的矛盾。代数学逐渐取代微积分后，向量的内积与外积成为描述物理过程与现象的抓手，同时也是制约人们想象力的原罪。向量的内积与局域对称性息息相关；而单电子过程中功能材料功能性起源于局域对称性。皮米尺度对于局域对称性的精确表征需求极大促进了球差校正电子显微方法的发...

报告介绍 报告内容介绍：  　　近几年有机配体功能化共价修饰金属纳米团簇已经成为一类新兴的纳米团簇材料。这类原子精确的金属纳米团簇处于亚纳米尺度，被认为是链接传统纳米材料与金属原子态之间的重要桥梁。它们在表界面催化，生物学等交叉学科领域具有广泛的潜在应用价值引起很多研究者的持续广泛的关注。然而这些金属纳米团簇精准结构测定本身是个巨大的挑战。本报告将简要介绍上海同步辐射光源衍射线站最新实验技术发展。从物...

报告介绍 Abstract：　　Superconductivity in iron-based superconductors emerges from long-range ordered antiferromagnetic phase with nematic order that breaks four-fold rotational symmetry of the underlying lattice. In spite of considerable work over the past decade, much is unclear concerning the microscopic origin of superconductivity and its relationship with magnetism, nematicity, and orbital order. In th...

报告介绍 Abstract：　　The heart is the first functional organ formed in mammalian embryonic development. Organ morphogenesis depends on the spatiotemporal arrangement of cells during development. The most well-known mechanism that contributes to the final shape of an organ is cellular intercalation in response to morphogens. A less well-known but essential mechanism is oriented cell division (OCD). OCD is t...

报告介绍 Abstract：　　The electronic structure of matter is critical information that determine its electric, magnetic and optical properties. The precise understanding of such information will not only help understand the rich properties and physical phenomena of quantum materials, but also guide the design of their potential applications.Angle-resolved photoemission spectroscopy (ARPES) is an effective me...

报告介绍 报告摘要：　　作为近几年才兴起的一种新型材料，共价有机多孔晶体（Covalent Organic Frameworks, COFs）在材料、能源、信息和环境等科学领域有着广泛的应用前景。近年来，我们设计合成了两种具有良好的催化活性三维微孔碱性功能化的BF-COFs。1我们发现酰亚胺化反应也可用于合成具有非-或多重穿插结构的三维多孔结晶PI-COFs。在药物缓释的应用研究中，这种材料显示了高的药物负载量和良好的可控释放性能。2我们也首次使用两种类型的...

报告介绍 Abstract：　　Because of their high energy density, lithium ion batteries (LIBs) have become a rapidly growing energy storage technology, particularly in mobile applications, such as portable electronics, hybrid electric cars, etc. The cathode materials are considered to be the performance-limiting factor in research designed to increase cell energy and power density. During the cathode materials ex...

报告介绍 Abstract：　　One of the grand challenges facing humanity today is the development of an alternative energy system that is safe, clean, and sustainable. A distributed renewable electrochemical energy and mobility system (DREEMS) can meet this challenge. At the foundation of this new energy system, we have chosen to study fuel cells, electrolyzers, and flow batteries. For all these devices polymer el...

报告介绍 Abstract：　　Lead halide perovskites have been demonstrated as high performance materials in solar cells and light-emitting devices. These materials are characterized by coherent band transport expected from crystalline semiconductors, but dielectric responses and phonon dynamics typical of liquids.  Here we explain the essential physics in this class of materials based on their dielectric fun...

报告介绍 Abstract:　　Algorithms for finding transition states in atomic scale systems will be discussed, as well as how transition state theory rates can be used with kinetic Monte Carlo for modeling dynamics in materials over long time scales. About the speaker:　　Graeme Henkelman is professor of chemistry and director of Center for Computational Molecular Sciences in the University of Texas at Austi...

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...