报告介绍 报告摘要：　　高精度γ核谱学的数据表明，229Th同质异能态可能具有非常低的核能级激发态，能级宽度约为10-4Hz，跃迁能量在可见光光学波段，现在预言此跃迁在紫外光学波段。如果这个跃迁存在，则有可能建造核光钟。与原子系统相比较，核跃迁抗外界扰动性能更强，核光钟频率的误差将达到10-18，甚至更小。然而国际上经过多方努力，科学家目前仍没有找到和精确测定229Th的光学波段核能级跃迁。　　我们计划利用重离子冷却储存环精...

报告介绍 Abstract： It is estimated that the world will need to double its energy supply by 2050. With the rapid increase in the global energy consumption, there is a pressing need for clean and renewable energy alternatives. In this talk, I will summarize our work on rational design and development of multi-dimensional conjugated polymers and graphitic carbon nanomaterials for efficient energy conversion an...

报告介绍 Biosketch:　　Dr. Qiang Li is a Tenured Physicist in the Condensed Matter Physics and Materials Science Department at US Department of Energy’s Brookhaven National Laboratory, New York, where he is the head of Advanced Energy Materials Group which studies microscopic and macroscopic properties of complex and nano-structured materials with a view to basic science understanding and developing th...

报告介绍 Abstract: 　　While scaling the dimensions of semiconductors down to nano scale, novel properties, such as ultrahigh specific surfaces, quantum confinement effect and strong light-matter interaction, will show out. Among the low dimensional structures, two-dimensional (2D) semiconductors may lead the next resolution in electronics and optoelectronics due to their compatibility with traditional micro...

报告介绍 报告摘要： Biomineralization is the process by which living organisms form highly sophisticated organic - inorganic hybrid materials. Characteristic for these materials is their highly optimised materials performance, their complex morphology and often hierarchical structure (see figure). In addition, they are formed in aqueous environment and ambient conditions which makes them attractive archetype...

报告介绍 报告摘要：　　表面等离子体共振传感在生化分析领域中有广泛应用，特别在特异性生化分子相互作用研究领域占据核心技术地位。本报告简要介绍表面等离子体技术的原理和研究动态，并介绍我们小组在保持技术指标的前提下实现低成本实验室应用的相关研究工作。

报告介绍 报告摘要： It is well known that avalanche photodiodes and bipolar phototransistors have gain. A photoconductive semiconductor material having gain is surprising, but it is clearly written in the classical semiconductor physics textbooks and widely accepted by the community for decades. The gain theory was derived in 1950s, which concluded that the gain of a photoconductor is equal to the minority c...

报告介绍 Abstract:　　Classical thermodynamics is concerned with the fundamental laws of nature and quantitative relations among different macroscopic variables such as various forms of free energy, temperature and chemical composition. Its application requires either experimental data for the calorimetric and/or volumetric properties of a specific thermodynamic system under consideration, or statistical-mec...

报告介绍 报告摘要： 　　The latest developments on controllable synthesis of nanoparticle derived aerogels and their broad application potentials for catalysis will be overviewed. The perspectives in this field will be given.报告人简介：Alexander Eychmüeller教授毕业于哥廷根大学物理系，获得Diploma学位，1987年在马克斯•普朗克生物物理化学研究所获得理学博士Ph.D学位，从1987年到1988年在加利福尼亚大学洛杉...

报告介绍 Abstract： In this talk, I will present a theoretical proposal in realizing spin wave logic based on a ferromagnetic wafer using domain wall and surface anisotropy as waveguides. A simplest spin wave logic component, spin wave diode, is demonstrated using micromagnetic simulations. In an anti-ferromagnetic film, I will show a chiral magnonspin Hall effect due to anti-ferromagnetic skyrmions. Such be...

报告介绍 报告人简介：　　北京大学化学与分子工程学院教授，中国科学院院士。1983年毕业于长春工业大学，1984年留学日本，1990年获东京大学博士，1991－1993年日本国立分子科学研究所博士后。1993年6月回北京大学任教，同年晋升教授。1993年获首批国家教委跨世纪优秀人才基金资助，1994年获首批基金委杰出青年科学基金资助，1999年受聘首批长江学者奖励计划特聘教授，2011年当选中国科学院院士，2013年首批入选中组部万人计划杰出人才。主要...

报告介绍 报告摘要： Physics, in particular, condensed matter physics, is a very old field. Many people are thinking that the exciting time of physics has passed. We enter the begining of the end of physics. The only important things in physics are its engineering applications. However, I feel that we only see the end of the begining. The exciting time is still ahead of us. In particular, now is a very exciti...

报告介绍 报告摘要：　　During this talk, I will give an overview of a subset of transport phenomena typically encountered in graphene. I will introduce the concept of quantum interference and associated localization effects that can be engineered by covalently functionalizing the material through, for instance, hydrogenation or oxygenation. I will go back to some of the basics of the quantum Hall effect disc...

报告介绍 报告摘要： Among the most promising prospect for dynamic nuclear polarization (DNP) is to transform NMR—offering atomistic details, but usually averaged over the entire sample—into a surface-sensitive and selective tool. We suggest that the success of this premise will hinge on two key factors, namely to achieve dramatic NMR signal enhancements and to do so while employing site-selective...

报告介绍 报告摘要： Understanding the properties of quantum matter remains a grand challenge in physical sciences. Computation has an integral role to play in tackling this challenge. I will give an introduction to the fundamental issues facing accurate and predictive computations of quantum systems, and then describe recent progress in combining field-theory and Monte Carlo simulations for computations in m...

报告介绍 报告摘要： 　　So, you've discovered something extraordinary and you want to consider publishing in a Nature journal. But which one should you choose? Why has Nature spawned so many new titles? What are the criteria for selecting and publishing papers in Nature Journals? And Indeed, how to get published in a Nature journal? In this talk, I’ll try to answer these and any other questions you may...