报告介绍 Abstract: 　　Fidelity mechanics, a scheme to investigate critical phenomena in quantum many-body physics, is formulated as an analogue of four laws in thermodynamics and black hole mechanics, thus unveiling a formal connection between critical points and black holes.　　Rich physics is unveiled even for simple, or say, prototypical models in quantum many-body systems, such as one-dimensional quantu...

报告介绍 Abstract：　　The successful isolation of two-dimensional (2D) graphene has stimulated research on a broad range of other 2D materials, among which layered transition metal dichalcogenides (TMDs) have attracted particular attention. The semiconducting members of the TMD family including MoS2, MoSe2 and WSe2 have not only demonstrated many of the "graphene like" properties highly desirable ...

报告介绍 Abstract：　　In the last few years we achieved substantial progress in determination of transition frequencies in the hydrogen molecular ions H+2 and HD+. Particularly, the fundamental transitions for these ions were calculated with the fractional uncertainty of 7:5 _ 10􀀀12.In our presentation we want to discuss the following topics:　　Numerical calculations of contributions of orders m_7...

报告介绍 报告摘要：　　The preparation and research of cold molecules have some important scientific significances and wide applied prospects. In this talk, we will first report three methods to prepare cold molecules and their experimental results in ECNU, including Stark velocity filtering, buffer-gas cooling and electrostatic Stark decelerating. Afterwards, we will introduce some techniques to manipulate ...

报告介绍 报告摘要：　　狄拉克电子材料中的载流子有效质量为零，能量和动量之间为线性色散关系，这种独特的狄拉克锥形电子能带结构导致许多新奇的量子输运性质。本报告我将汇报我们关于低维狄拉克电子材料（包括石墨烯、拓扑绝缘体Bi2Se3纳米结构、狄拉克半金属Cd3As2纳米结构）的制备和量子输运性质方面的工作：（1）石墨烯垂直结构的构筑，以及在电流垂直于石墨烯平面的情况下，温度、磁场、门电压对载流子输运的调制作用；（2）在高迁移率...

报告介绍 Abstract: 　　We present our recent work on the understanding of the charge transport mechanism for organic optoelectronic materials, which has been under controversy. Semiclassical Marcus theory has been extremely popular and insightful for molecular design since Br¨¦das and coworkers. However, the experimental carrier mobility value of organic semiconductors increase rapidly in recent y...

报告介绍  报告人简介：Provost; Senior Vice Provost for International Affairs; Laura H. Carnell Professor of Chemistry; Temple UniversityEducation：1974 B.S. in Chemistry National Taiwan University1981 Ph.D. in Chemistry University of California, Berkeley      Advisor: Professor C. Bradley MooreExperience:1981-1984 Postdoctoral Fellow, MIT, with Professors Robert W. Field and  &n...

报告介绍 报告人简介：　　李清庭教授为台湾成功大学电机资讯学院第一任院長，讲座教授。长期从事半导体微电子和光电子材料与器件的研究，成绩卓著。开发建立了光电化学氧化法、低温气相冷凝法及激光辅助等离子体增强气相蒸镀法，成功应用于III-V族半导体-金属氧化物-半导体场效应器件，氧化物光电元件及薄膜太阳能电池与纳米元件的研制，相关的研发成果受到学术界和产业界的高度重视。由于在微电子和光电子材料与器件方面的卓著贡献，荣获IEEE...

报告介绍 Abstract:　　Future technologies will require new paradigms in design, functionality, scalability and a reduction in power consumption to meet our global energy challenges, reduce our environmental footprint and sustain or evolve the information age. Hybrid inorganic-organic systems (HIOS) offer a promising route because they may combine the best features of two distinct material classes or even ach...

报告介绍 报告摘要： Elucidating the mechanism by which a protein folds—the protein folding problem—has blossomed into a large, interdisciplinary field. Single-molecule methods provide a powerful tool for probing complex folding pathways as in protein folding and misfolding. In this talk I will share two of my stories on using single-molecule force spectroscopy (SMFS) to study protein folding. I w...

报告介绍 Abstract: 　　Weyl semi-metal (WSM) is a new topological state found recently in condensed matter. In this talk I will introduce the nonmagnetic WSM material TaAs family. From the first principle calculation, we find twelve pairs of Weyl points in the whole Brillouin zone (BZ) of these materials. In the absence of spin-orbit coupling (SOC), band inversions in mirror invariant planes lead to gapless ...

报告介绍 Abstract： In molecular conductance spectroscopy, the current through a molecule (or molecules) connecting two metal or semiconductors electrodes is measured as a function of the applied voltage. With eye on potential technological applications the main problems facing researchers in this field fall within the subjects of fabrication, characterization, stability, functionality and control. This talk...

报告介绍 报告摘要： 碳纳米材料如石墨烯、碳纳米管等是由于其高的比表面积、化学稳定性及导热、导电特性近年来发展十分迅速的纳米材料。本报告首先对碳纳米管的可控生长进行了研究，发现可在TOF达106 1/s条件下实现半米长碳纳米管的无缺陷生长，这一生长过程符合最可几失活关系。通过对纳米金属催化剂底部生长机制的认识，设计了层状介孔单晶材料稳定金属的方法，制备出了阵列碳纳米管、碳纳米管双螺旋结构及石墨烯碳纳米管杂化物，并对批量...

报告介绍 Abstract： Understanding the origin of high temperature (high-Tc ) superconductivity in cuprates and iron-based superconductors remains one of the most challenging problems in condensed matter physics. Here we discuss the relationship among global electronic structures, local   structural building blocks and electron occupation numbers in these two classes of materials   and ...

报告介绍 Abstract：　　Chemical sensing and analyses of gas samples by laser spectroscopic methods are attractive owing to the high sensitivity and specificity, large dynamic range, multi-component capability, and lack of pretreatment or preconcentration procedures. The availability of broadly tunable mid-infrared sources like external cavity quantum cascade lasers (EC-QCLs), interband cascade lasers (ICLs),...

报告介绍 Biosketch:　　Dr. Junwang Tang is a Reader in Energy in the Department of Chemical Engineering at UCL and a Fellow of the RSC. He received his PhD in Physical Chemistry in 2001. His research interests encompass structure-controlled nanomaterials synthesis by a flow system powered by microwave irradiation, solar H2 synthesis from water, CO2 capture and conversion to a renewable fuel, methane conversi...