报告介绍 Abstract： Atomistic structures of materials occupy a central position, when establishing a correspondence between materials performance and chemical compositions. Theoretical prediction of atomistic structures becomes the key for the purpose of materials design. We have developed a swarm-intelligence based CALYPSO approach for structure prediction by taking the advantage of structures smart learnin...

报告介绍 报告摘要：　　BSRF漫散射实验站是进行结构研究的开放平台，提供X射线散射、衍射、反射和驻波技术。当前，漫散射实验站正面临着两个发展机遇，一个是中国科学院大科学装置维修改造项目，另一个是北京高能光源和表面界面散射线站的建设。在新光源建成之前，升级改造现有的BSRF-1W1A漫散射实验站对于支撑国内的材料结构与物性的关系的研究十分重要。在本报告中，我将介绍漫散射实验站的现状、维修改造内容、进一步发展的空间与方向和可...

报告介绍 报告摘要： 　　众所周知，具有电流单向传输能力的特殊结构，比如二极管，逻辑门，是现代电子计算和信息革命的源动力。受此启发，近年来科技工作者已经成功实现热流和声能流的单向传输。考虑到光的单向传输在未来信息光子和光电子学器件中的重大科学意义和实用价值，近年来科技工作者正在努力实现与电二极管功能类似的光子学功能单元——光二极管。潘安练教授将介绍半导体纳米线的制备工艺、发光特性及应用，重点将介绍其...

报告介绍 报告摘要： The response of molecules to sequences of ultrafast optical pulses ranging from the infrared to the hard x-ray regimes provides novel windows into elementary molecular events and electronic and nuclear motions. Recent developments in this field involving the use of broadband x-ray pulses and entangled photons will be surveyed. New x-ray light sources are capable of triggering valence elec...

报告介绍 报告摘要：I will discuss advances in tip-enhanced spectroscopy in sensitivity, selectivity, time resolution, and overall parameter space in particular for Raman, photoluminescence, and nonlinear nano-imaging. In particular to gain insight into intra- and inter-molecular coupling and dynamics, we use tip-enhanced Raman spectroscopy (TERS) at variable and cryogenic temperatures, to slow and control th...

报告介绍 Abstract:　　The art of experimental Condensed Matter Physics (CMP) research is to perform well conceived experiments on specially designed samples, in order to reveal the physics relations hidden by the competing interactions in the many-body system of materials. It is in this context that the CMP research resembles the art work of cinematography, which intends to use staged screenplays to highligh...

报告介绍 Abstract： To understand and ultimately control the properties of most functional materials, from molecular soft-matter to quantum materials, requires access to the structure, coupling, and dynamics on the elementary time and length scales that define the microscopic interactions in these materials. To gain the desired nanometer spatial resolution with simultaneous spectroscopic specificity we combi...

报告介绍  2015年微尺度青年学者邀请报告会时间：2015年11月22日（周日）下午 2：00 ~ 5：30地点：东区理化科学实验中心317会议室  报告人 单 位 报告题目 王征飞 中科大微尺度国家实验室 青年千人 Organic Topological Insulators in Organometallic Lattices 李越 中科院固体...

报告介绍 Abstract： Multiphoton processes with highly efficient frequency upconversion of infrared (IR) light to shorter wavelengths open up opportunities for many technological applications. They can provide the function of on-demand and on-site optical transformers. The two types of materials being developed in our lab are nonlinear organics and rare-earth doped fluoride nanocrystals. These nanocrystal can...

报告介绍 报告人简介：报告人获奖2012年入选教育部“新世纪优秀人才支持计划”；2012年获得“福建省杰出青年基金”资助；2014年获评第十届福建省自然科学优秀学术论文一等奖。2015年获评“《中国科学：化学》优秀青年编委”。 报告人在研项目国家自然科学基金委仪器专款项目“电化学微纳加工：仪器平台、理论和应用研究”，项目批准号：21327002，310万元，2014.01-2017.12，项目主持人。国家自...

报告介绍 报告摘要： 围绕系综统计分布，讨论平衡统计力学的基础：分布的函数形式、分布参数和分布支集。着重探讨分布支集问题，以及温度、熵和不可逆性。报告人简介：　　郑伟谋，1968年毕业于北京大学物理系。1984年于比利时布鲁塞尔自由大学获理学博士（导师普利高津）。他1978年加入中国科学院物理研究所，不久转入理论物理研究所，退休前为理论物理所研究员。他于1981年至1987年间，在美国德州大学奥斯丁分校统计力学中心从事随机过程、...

报告介绍 报告摘要： Evaporation is the process by which water changes from a liquid to a gas or vapor, and is a key step in the earth’s water cycle. At the molecular level, evaporation requires breaking at least one very strong intermolecular bond between two water molecules at the interface. Despite the importance of this process, the molecular mechanism by which an evaporating water molecule gains su...

报告介绍 报告摘要： 　　For spin-1/2 systems when quantum fluctuations destroy the Neel long-range order and open a spin gap, the resulting state usually breaks the lattice translation and rotation symmetries. This can be understood as reflecting a Berry's phase associated with the magnetic monopole of the Neel order parameter. Here we point out the same Berry phase causes spin-1 systems to spontaneously bre...

报告介绍 Contents:- Synthetic Chemistry of Fullerene Derivatives- Design Concept of Fullerene Electron Acceptor for Organic Solar Cells- Development of Small Molecule Organic Electron Donors- Hole-selevtive Transparent Carbon Nanotubes Electrode for Organic Solar Cells and Perovskite Solar Cells

报告介绍 报告摘要： Condensed matter as we know it gives way to a completely new unexplored world at megabar pressures. High pressure simulations, particularly of the first principles type, provide a privileged access to this world which complements and in some cases overrides experiment. Without entering technical details, and depending on time, I will briefly review some theoretical case studies which high...

报告介绍 报告摘要： 开展高精度的离子光频标的各项关键技术攻关：通过激光冷却实现单个离子和离子云的稳定囚禁；通过探索激光稳频方面的各项问题，实现了稳定度在1E-15，线宽Hz量级的光频跃迁激光器；由此建立了二台囚禁离子光频标系统；基于此开展囚禁离子光频比对实验和系统误差分析，光频标的不确定度和稳定度都达到E-17量级；在E-15量级测量了钙离子的光频跃迁频率；测量了钙离子的亚稳态寿命；测量了钙离子的魔幻波长。同时建立了囚禁离...