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...

报告介绍 报告摘要：　　氧化物功能薄膜不仅是基础物理研究的重要对象，也对未来的功能器件展现了光明的应用前景。报告人以晶圆级高质量外延的VO2薄膜以及集成于镍基底上的BaTiO3薄膜为例，针对拓展氧化物薄膜生长窗口和控制金属/氧化物界面两个方面探讨“控氧”的机理和方法，使用易于产业化的化学溶液生长技术，基于薄膜生长热力学模型，对生长中氧化反应动力学行为进行调控，实现了晶圆级高质量外延的VO2薄膜和界面可控的BaTiO3/...

报告介绍 Abstract： In this talk, I will introduce our recent development for the SSW package, including Stochastic Surface Walking method (SSW) and Double-Ended Surface Walking (DESW) method, and apply the package for resolving the reaction pathways in catalysis and solid phase transition. The SSW method is designed for the global optimization of structure on potential energy surface (PES), while maintainin...

报告介绍 Biosketch:　　Dr. Peksen has been about 8 years the scientific head and contact person in multiphysics simulation and modelling at the Forschungszentrum Jülich (FZJ), Germany. Dr. Peksen started his academic career in mechanical engineering in Turkey, at the Technical University of Istanbul. This was followed by a Masters degree in mechanical engineering at the RWTH Aachen University, DE. ...

报告介绍 Biosketch:　　Dr. Peksen has been about 8 years the scientific head and contact person in multiphysics simulation and modelling at the Forschungszentrum Jülich (FZJ), Germany. Dr. Peksen started his academic career in mechanical engineering in Turkey, at the Technical University of Istanbul. This was followed by a Masters degree in mechanical engineering at the RWTH Aachen University, DE. ...

报告介绍 Biosketch:　　Dr. Peksen has been about 8 years the scientific head and contact person in multiphysics simulation and modelling at the Forschungszentrum Jülich (FZJ), Germany. Dr. Peksen started his academic career in mechanical engineering in Turkey, at the Technical University of Istanbul. This was followed by a Masters degree in mechanical engineering at the RWTH Aachen University, DE. ...

报告介绍 Biosketch:　　Dr. Peksen has been about 8 years the scientific head and contact person in multiphysics simulation and modelling at the Forschungszentrum Jülich (FZJ), Germany. Dr. Peksen started his academic career in mechanical engineering in Turkey, at the Technical University of Istanbul. This was followed by a Masters degree in mechanical engineering at the RWTH Aachen University, DE. ...

报告介绍 Biosketch:　　Dr. Peksen has been about 8 years the scientific head and contact person in multiphysics simulation and modelling at the Forschungszentrum Jülich (FZJ), Germany. Dr. Peksen started his academic career in mechanical engineering in Turkey, at the Technical University of Istanbul. This was followed by a Masters degree in mechanical engineering at the RWTH Aachen University, DE. ...

报告介绍 报告内容简介:　　The directional movement of bacteria is governed by the motor switch complex and is an important virulence factor for pathogenic bacteria colonizationand infection.Flagellar motor switch complex, also called C-ring, is a supramolecular structure typically self-assembled by multiple copies of FliG, FliM and FliN. The switch complex is essential for flagellar assembly, torque generati...

报告介绍 Abstract: 　　Semiconductor heterojunctions are fundamental building blocks in many modern electronic and photonic devices. The emergence of two-dimensional semiconductors opens up a new realm for creating heterostructures. Many novel devices have been proposed based on heterojunctions (HJs) formed between dissimilar transition metal dichalcogenides (TMDs), including both vertically stacked van der ...

报告介绍 Abstract： Electron transfer processes at surfaces and interfaces play a crucial role in diverse fields of materials sciences. In this talk, I will discuss surfaces of three-dimensional topological insulators and interfaces between metals and organic semiconductors. Time-resolved two-photon photoemission (2PPE), a method that combines femtosecond pump-probe techniques with photoelectron spectroscopy...

报告介绍 报告摘要：　　有强自旋轨道耦合的5d电子体系近来引起了人们的极大关注，在该领域的研究中，新奇电子态、磁性性质等新物理现象正被源源不断地揭示出来。我将报告最近在5d体系的工作：(1)LiOsO3体系表现“铁电金属”的可能微观机制；(2)自旋轨道耦合导致的Spin Texture对WTe2奇异磁阻的影响；(3)WTe2中压力诱导“拱形”超导。 报告人简介：　　万贤纲，现任南京大学物理系教授，教育部“新世纪优秀人才...

报告介绍 Abstract：　　The microbes inhabit planet earth over billions of years, and have adapted to diverse physical environment of water, soil, and particularly at or near interfaces.  Following recent studies on bacterial swimming and accumulation near solid surfaces, we turned our attention to the behavior of Caulobacter crescentus, a singly flagellated bacterium at the interface of water/air or wat...

报告介绍 报告摘要： 我们成功地合成了氟掺杂并表面部分氧化的碳化钽催化剂，TaCxFyOz/gC。这个材料当氟含量约为0.125及氧含量为2时表现出极好的在酸性溶液中甲醇氧化的性能。它的性能可以和PtRu/C催化剂相当，而在抗CO毒化和稳定性方面更优于PtRu/C催化剂。DFT计算证明当氟掺杂达0.125时其带隙为最小，同步辐射实验证明了这一结果。而且，甲醇在此催化剂上的氧化是经历一个非毒化机理。这是目前世界唯一表明非金属催化剂可以再酸性溶液中用于...

报告介绍 Abstract：　　Optical clocks based on alkaline-earth(-like) atoms trapped in optical lattices have surpassed the performance of conventional atomic fountain clocks, featuring  high accuracy levels in the order of 10-18. A lattice clock employing one fermionic isotope of ytterbium 171Yb has become one of the best optical clocks, benefiting from its simplest hyperfine structure of the spin-1/2 sy...