5月31日百年物理讲坛第五讲,Schweizer教授短期讲

2019-05-04 18:55 来源:未知

课程名称:Dynamic behaviors of materials(材质的动态力学行为)授课内容:该课程介绍资料动态力学行为琢磨的基础知识和依据一流Computer的成员 重力学模拟方法以及有关实验技术前沿,并举个例子表达分子引力学在三种材料的重力学行为钻探中的应用。上课地方:土木与地质大学60肆会议室课程内容及时间铺排:四月5日(星期日)九:00 –11:00 Lecture 1 A general introduction to molecular dynamics simulations10月16日(周二)14:30 – 16:30Lecture 2 General introduction to dynamic shock behavior and the response of materials to high pressure conditions.10月17日(周三)9:00 –11:00Lecture 3 Synergies between shock experiments and molecular dynamics simulations 10月17日(周三)14:30 – 16:30Lecture 4 Frontiers in Shock Experiments10月18日(周四)9:00 –11:00Lecture 5 Frontiers in Molecular Dynamics Simulations and Analysis迎接广大师生前往!土木与师范高校二〇一八年三月25日主讲人简单介绍:提姆德文n received a Ph.D. in Chemical Physics from Harvard University in 19玖五, where he was a DOE Computational Science Graduate Fellow. Now Timis a top scientist in Los Alamos National laboratory (LANL) in USA. At LANL, Tim has used large-scale classical MD simulations to investigate shock, friction, detonation, and other materials dynamics issues using leadership-class supercomputers. He led the LDKugaD-DR Spatio-temporal frontiers of atomistic simulation in the petaflop computational world followed by the $21M ASC奥迪Q叁 Exascale Co-Design Center for Materials in Extreme Environments (ExMatEx), which he directed from 20拾-陆. Timcurrently directs the Co-design center for Particle Applications (CoPA), as part of the Exascale Computing Project (ECP). He is a Fellow of the American Physical Society (APS), past chair of the APS Division of Computational Physics, and is currently chair-elect of the APS Topical Group on Shock Compression of Condensed Matter. He has received an IEEE 戈登 Bell Prize, the LANL Fellows' Prize for Research, three LANL Distinguished Performance Awards, two NNSA DP Awards of Excellence, the LANL Distinguished Copyright Award, and an LX570&D 100 Award, and is a member of the DOE Advanced Scientific Computing Advisory Committee. Eric哈恩 received a Ph.D. in Materials Science and Engineering from Prof. Marc 迈尔s group in University of California San Diego in 201陆. 埃里克now is a Postdoc Research Associate in Los Alamos National Laboratory in USA and a promising young scientist. He has rich experience in molecular dynamics simulations, especially in the investigation of dynamic behaviors of materials. His work has involved various kinds of engineering materials including metals (Fe, Ta, Cu) and ceramics (SiC). Great progress has been made during his work in LANL.附件:无

北大世纪物理讲坛

主 题:Lectures on Modern Approaches to the Physics and PhysicalChemistry of Soft 马特er主讲人:Prof. Kenneth S. Schweizer (University of Illinois at Urbana-Champaign)地方:华南软物质科学与技艺高级切磋院(北区科学和技术园二号楼)3贰四报告厅第三讲 Glassy Dynamics and Kinetic Arrest in Soft Matter and Materials Science时 间:二〇一八年7月1二十一日(周2)10:00(Pedagogical Introduction)和一5:00(Research Seminar)第壹讲 Dynamics and Viscoelasticity of Entangled Synthetic and Biological Polymer Liquids时 间:二〇一八年四月23日(周4)拾:00(Pedagogical Introduction)和1五:00(Research Seminar)第一讲 Structure, Phase Behavior, Dynamics and Mechanical Response in Polymer Nanocomposites时 间:二零一八年二月二十五日(周四)十:00(Pedagogical Introduction)和15:00(Research Seminar)质感科学与工程大学华南软物质科学与手艺高端商量院二零一八年5月十7日第3讲内容简要介绍:Understanding of the spectacular slowing down of relaxation and mass transport in glass-forming liquids of atoms, molecules, colloids, nanoparticles, polymers and other materials over 14 or more orders of magnitude remains a grand challenge. Moreover, many advanced materials employ amorphous solids, and vitrification can frustrate the assembly of ordered structures. In the first talk, I will present an introductory overview of glassy dynamics from the liquid side describing both the qualitative similarities and large quantitative differences between material classes and even within a single class of compounds (e.g., polymers). The physical ideas, assumptions and limitations of both venerable phenomenological models and more modern approaches will be discussed. In the second talk, I will present our new microscopic, force-based predictive theoretical approach to activated relaxation and emergent elasticity that can address both the physical and chemical aspects of glassy dynamics and kinetic arrest for molecular, colloidal and polymeric systems over the entire range of relevant temperatures and relaxation times. Its generalization to thin films will be briefly mentioned, followed by an in depth discussion of the technologically important problem of penetrant diffusion in supercooled liquids and glasses. Quantitative confrontation of our theories with experiments will be presented throughout the talk. Finally, limitations of our approach and key open questions will be discussed.第一讲内容简单介绍:The existence and dynamical consequences of topological entanglements between strongly interpenetrating and sufficiently large and/or dense macromolecules of diverse architectures (chains, rods, star-branched) is a fascinating and unique phenomenon in polymer science which is also highly relevant to cell biology. Its fundamental origin is the emergent kinetic consequences of polymer connectivity and uncrossability. In the first talk, I will give an introductory overview of the key features of entangled dynamics, viscoelastic response and diffusion from an experimental perspective. Classic models of unentangled and entangled linear chain and rigid rod liquids will then be described and their predictions compared with experiment. Though existing theories in equilibrium have had many successes, they are highly phenomenological and there remain multiple open fundamental issues especially under strong deformation conditions crucial to polymer processing and internal force mediated processes in biopolymer networks. In the second talk I will present an overview of our recent theoretical work that aims to develop a first principles, force-based, predictive statistical dynamical theory for the quiescent (under isotropic, oriented and confined conditions) and nonequilibrium (strained, stressed) behavior of entangled flexible chain and rigid rod liquids. New predictions will be described from a physical perspective along with quantitative comparisons with experiment and simulation. Open and difficult questions in the area of nonlinear rheology will be briefly discussed, and our recent ideas for making progress sketched.第3讲内容简单介绍:Polymer nanocomposites (PNC) are typically hybrid organic-inorganic materials that traditionally have combined rigid nanoparticles (diameters 五-200 nm) and flexible macromolecules to achieve unique properties. The classic example is rubber reinforcement via filler particles which is of central importance in the tire industry. However, the 田野先生 has largely been empirically driven. Over the past decade or two, major progress has been made at formulating and addressing fundamental physical questions concerning these multi-component materials which involve an exceptionally broad range of time, length and energy scales. In the first talk, I will present an overview of the general PNC problem and selected recent contributions by experimentalists, simulators and theorists that address mainly the question of phase behavior and microstructure as a function of chemical and physical variables, and its impact on dynamical properties. In the second talk, I will give an overview of our theoretical efforts over the last decade which have aimed to merge and extend ideas and methods from colloid and polymer physics and physical chemistry to create new predictive and microscopic statistical mechanical theories that address PNC multi-scale structure, states of aggregation, phase separation, nanoparticle diffusion, glass and gel formation, and how nanoparticles modify polymer entanglement phenomena. The new physical ideas will be described along with model calculations and quantitative comparisons with x-ray and neutron scattering, diffusion, structural relaxation, and mechanical measurements.主讲人简单介绍:Ken Schweizer received a B.S. in physics from Drexel University in Philadelphia, and a Ph.D. in physics from the University of Illinois at Urbana-Champaign (UIUC) in 一玖八一 working with the theoretical physical chemist 大卫 Chandler. After a postdoc in chemical physics at Bell Labs with Frank Stillinger, in 1玖捌3 he joined the Materials Directorate at Sandia National Laboratories where he learned about polymer and materials science. In 1九九一 he moved to UIUC where he is presently the G. 罗恩ald and 玛格Rita H. Morris Professor of Materials Science and Engineering, Professor of Chemistry, Professor of Chemical and Biomolecular Engineering, and member of the Frederick Seitz Materials Research Laboratory and the Beckman Institute for Advanced Science and Technology. His research interests are centered on developing, and applying to experiment, predictive microscopic statistical mechanical theories of the structure, thermodynamics, phase behavior, dynamics and rheology of diverse soft materials including molecules, polymers, colloids and nanocomposites in the liquid, suspension, crystal, liquid crystalline, thin film, rubber, gel and glass states. Honors include the Dillon Medal, Polymer Physics Prize, and Fellowship from the American Physical Society, the Joel Henry 希尔德brand Award in the 西奥retical and Experimental Chemistry of Liquids from the American Chemical Society, and the Drucker Eminent Faculty Award and undergraduate and graduate teaching excellence and student mentorship awards from UIUC.附属类小部件:无

Centennial Physics Lectures at Peking University

Lecture 5: Manipulating and Transforming Photons with Nanotechnology: From Photo-Physics to Emerging Technologies

bet356体育,By Prof. Paras N. Prasad

at the Institute for Lasers, Photonics and Biophotonics, Departments of Chemistry, Physics, Electrical Engineering and Medicine,

State University of New York at Buffalo

Time:

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