报告介绍 报告摘要：　　When singleatom meets 2D materials, many exotic physical and chemical properties emerge inthis hybrid system, which makes it highly desirable for a wide range ofapplications. In the first part of my talk, I will describe our recent scanningtunneling microscopy (STM) and atomic force microscopy (AFM) studies of singlemolecules/atoms on 2D materials with an aim to understand how the ener...

报告介绍 Abstract：　　In this talk, I will presentour recent experimental observations of the large-scale mesoscopic transport innanostructured graphene, and tunnelling spectroscopy in gate-inducedsuperconductivity in MoS2.　　I will first talkabout the observation of Anderson localization in two dimensions through samplesize scaling on nanostructured graphene. The localization length is observed toincrease...

报告介绍 Abstract:　　A focus of my research is to thedevelop simulation methods that reveal the mechanistic details of quantummechanical reactions that are central to biological, molecular, andheterogenous catalysis. The nature of this effort is three-fold: we work from thefoundation of quantum statistical mechanics and semiclassical dynamics todevelop methods that significantly expand the scope and reliabi...

报告介绍 Abstract：  　　Transition metal oxides exhibit a wide range of exotic phenomena from metal-insulator transition, colossal magnetoresistance to high-temperature superconductivity. In this talk, we focus on one important class of transition metal oxides, namely double perovskite oxides. We show that: i) a magnetic transition (from paramagnetic to long-range magnetically ordered) can simultaneous...

报告介绍 Abstract： 　　The Paul Scherrer Institute (PSI) runs Switzerland's Large-Scale research facilities for users from the domestic and international scientific community, and is one of only two locations in the world providing the three complementary probes of synchrotron and free electron laser X-rays, neutrons and muons at one site. The Swiss Light Source (SLS) at PSI provides photon beams of hi...

报告介绍 报告摘要：　　随着芯片集成度不断提高，半导体器件尺寸逐渐接近物理极限，传统半导体信息技术面临困难。另一方面，关联电子材料中自旋、轨道、电荷和晶格自由度之间的强烈耦合导致复杂的相图和丰富而敏感的宏观物性变化，为新型器件应用提供了可能。利用氧化物关联电子系统中的新奇量子效应来发展新一代氧化物电子学存储和处理器件成为研究的热点。报告首先简单介绍激光脉冲沉积制备外延异质结构的原理，然后讨论若干极性/非极性界...

报告介绍 报告摘要：　　Few-layer black phosphorus is a newly emerged two-dimensional material. It has many interesting properties such as strong anisotropy and significant layer-dependence of the electronic structures. The bandgap of few-layer black phosphorus is in the infrared frequency range, bridging the gap of other 2D materials: zero bandgap graphene and visible frequency bandgap transition metal dicha...

报告介绍 报告摘要：　　球差矫正器发明于上世纪90年代末，它的出现为电镜领域带来革命性的进步，从此利用透射电镜观察材料原子级别的微观结构成为现实。报告首先简单回顾了球差矫正电镜发展历史，以及本人在电子显微学方法方面的几点工作；然后介绍了球差矫正电镜的优点及目前的技术发展特点：高空间分辨率成像和高分辨率微区分析，以及结合原位技术进行的原子分辨率动态观察和冷冻电镜技术……, 并分别结合实例进行简单说明。随后介绍...

报告介绍 报告摘要：　　Manipulation of defects, ranging from atomic scale to nanometer scale, has leading the advancements in thermoelectrics for many decades through a reduced lattice thermal conductivity. This talk involves 0D vacancy (either intrinsic or extrinsic) and interstitial defects as strategy for effectively scattering phonons[1]. Moreover, the possible clustering of vacancy or interstitial, whic...

报告介绍 报告摘要：　　热电材料能实现热能和电能的直接相互转换，在余热废热利用和固态制冷等领域有重要的应用前景。热电转换器件的效率正比于热电材料无量纲优值zT和环境温差。半赫斯勒（Half-Heusler，HH）化合物及其固溶体是一类重要的新型高温热电材料，具有环境友好、机械性能优异、热稳定好和易于批量制备等优点。本报告将重点介绍典型的18电子HH合金：N型ZrNiSn基合金和新型高性能P型FeNbSb基热电材料，通过能带调控改善电功率因子，...

报告介绍  报告人介绍：　　中国科学院院士，中国科学院理化技术研究所研究员，博士生导师　　北京航空航天大学化学与环境学院院长　　1987年毕业于吉林大学物理系固体物理专业，1990年在该校化学系物理化学专业获硕士学位。1992年－1994年作为中日联合培养的博士生在日本东京大学留学，回国获博士学位（导师：李铁津教授）。1994年－1996年在日本东京大学做博士后（合作导师：Akira Fujishima 教授）。1996年－1999年在日本神奈川科学院...

报告介绍 报告摘要：　　针对在大气环境化学、星际化学以及合成化学中的系列重要含硫中间体和关键瞬态自由基，结合低温微量合成、激光与闪光热分解、反射式超低温基质隔离光谱和高精度理论量子化学计算，开展原位光谱探测、光化学、超低温动力学和反应机制的实验与理论研究，发现新物种并获取指纹光谱数据的同时，揭示其结构与化学键本质，探索微观反应机制。本报告将重点介绍元素硫的氧化机制、含硫共轭多烯的低温构象变化动力学、以及有机硫...

报告介绍 报告摘要：　　石墨烯纳米带具有优良的电学、磁学以及拓扑性质，在材料科学、物理学、化学及电子学方向有很大的潜在研究价值。现阶段，制备石墨烯纳米带大多通过‘自上而下’的方法。但这些方法面临一个共同的难题，即无法精确控制纳米带的宽度和边缘结构。瑞士联邦实验室Roman Fasel研究组及其合作者，在2010年成功利用表面化学合成方法的解决了这个难点。基于“自下而上”表面合成途径，他们首次成功制备了具有原子级精确结构的超...

报告介绍 报告摘要：Dirac electrons lead to unusual electronic and optical properties in graphitic materials (graphene, carbon nanotubes). Near-field optical nanoscopy is a powerful tool to study material properties at the nanometer scale. In this talk, I will first introduce the scanning near-field optical microscopy (SNOM) technique. Then I will discuss layer-stacking domain walls in bilayer graphene and it...

报告介绍 报告摘要： Distinct from classic inorganic nanoparticles of solid cores, nanoscale metal-organic frameworks (NMOFs) are of ordered crystalline pores with tunable composite, size and volume, which provide an ideal platform not only to manipulate the reaction active sites but also to understand the structure-functionality relationship. In this presentation, we will introduce two recent works involving...

报告介绍 报告摘要：　　等离子体纳米结构丰富的光学性质使得其在近些年的研究中收到广泛关注。但是这些纳米结构的光学性质与结构本身的参数，如纳米粒子基元的大小、各向异性、空间构像等具有密切的关系。传统的自上而下的纳米制造技术由于受到加工精度的限制，不能在纳米尺度对纳米光学基元进行操纵，从而不能实现等离子体光学纳米结构及其性质的精确调控。本报告中，我们将向大家汇报最近五年来，我们利用DNA和蛋白质两类生物大分子作为模...