报告介绍

报告介绍 报告摘要： Interband cascade (IC) lasers take advantage of the broken band-gap alignment in type-II quantum wells to reuse injected electrons in cascade stages for photon generation with high quantum efficiency and represent a relatively new class of mid-infrared light sources. Unlike intraband quantum cascade lasers, IC lasers use interband (conduction to valence bands) transitions for photon ...

报告介绍 报告摘要： Making atomically well-controlled graphene nanoribbons (GNRs) is a prerequisite for many graphene applications. We proposed two efficient methods of making narrow GNRs: using a single transition metal atom to unzip single-walled carbon nanotubes in H2 gas; and applying a uniaxial external strain to cut graphene sheet into GNRs. As an example, we demonstrated that a Cu atom drastically red...

报告介绍 报告摘要：　　With the small mass, large quality-factor, high frequency, nanomechanical resonators (NRs) will ultimately find usage in a broad range of applications, such as electrometry, optomechanical/ electromechanical signal processing, and mass detection. In this talk, we shall focus on a particular NR application: ultrasensitive mass spectrometry in all-optical domain. The convectional electri...

报告介绍 报告摘要：　　Current research interests for renewable energy focuses on solar cells, wind power, hydrogen, as well as bio mass. None of them are, however, technologically mature or rich enough to replace the traditional energy. Solar cell and wind power are, for instance, extremey unstable while hydrogen, as a very clean and abundant energy source, still suffers from the technology barricade associ...

报告介绍 报告摘要：　　It is well known that magnetic materials with high coercivity, perpendicular magnetic anisotropy and magnetic energy product have great application potential in ultrahigh-density perpendicular magnetic recording, permanent magnets and spintronics. On the other hand, magnetic materials epitaxied on semiconductors allow for a direct integration of magnetic, optical and electronic devices...

报告介绍

报告介绍 报告摘要： 　　Quantum devices can outperform their classical counterparts for interesting and important tasks. Although quantum devices are challenging to build, today we can build special purpose devices, particularly as quantum sensors and simulators. However, they are quite challenging to control. I will show examples of how quantum information theory (normally associated with algorithms for qua...

报告介绍 报告摘要： The Achilles' heel of quantum information processors is the fragility of quantum states and processes. Without a method to control imperfection and imprecision of quantum devices, the probability that a quantum computation succeed will decrease exponentially in the number of gates it requires. In the last fifteen years, building on the discovery of quantum error correction, accu...

报告介绍 报告人简介：　　李志成博士，1992年毕业于印第安纳宾夕法尼亚大学并获得学士学位，次年就读于美国明尼苏达大学双城分校（University of Minnesota at Twin Cities），师从美国著名化学家Craig J. Forsyth教授并于1999年获得博士学位。1999年至2001年作为博士后在美国Pharmacia Corporation医药化学部门从事研究工作。2001年至2005年间先后受聘于香港大学和香港城市大学从事合成化学的研究。2005年起，就职于北京大学深圳研究生院化...

报告介绍 Abstract: 　　In the decades to come, mankind will have to make a significant shift in the way it deals with our planet’s available resources, and in particular in our use of energy. It is not difficult to argue that the sun is the only sustainable source of energy available to us, and electrochemistry and catalysis will play a key role in harvesting, storing and releasing that energy. 　　In ...

报告介绍 报告摘要         　　以1996年哈佛大学化学系改名为化学与化学生物学系为标志，化学生物学学科已有16年历史，并成为当前化学发展的一个重要生长点，在国内外得到广泛的重视。单分子探测是化学生物学技术的代表之一。作为一种生物物理化学的研究方法，它可以实时追踪单个分子的运动和变化，或者分辨复杂体系中分子性质的分布，在生命科学研究中得到越来越多的应用。十多年前，我们实验室着...

报告介绍 报告人简介：　　Richard Palmer is Professor of Experimental Physics at the University of Birmingham, UK, and Head of the Nanoscale Physics Research Laboratory, which he established in 1994 as the first centre for nanoscience in England. The Laboratory’s research interests include nanostructured surfaces, atomic clusters, atomic manipulation and nanofabrication. Professor Palmer obtained his fi...

报告介绍

报告介绍 报告摘要：　　氧化物晶体管是构成氧化物电子学线路的基本器件，而氧化物电子学线路又是实现高效率低能耗的氧化物电子学应用的基本保障。如能将几种钙钛矿结构氧化物集成生长，并能在其界面获得半导体功能，就有可能实现晶体管的研制。本工作分别以钙钛矿结构金属性电子型铜氧化物超导体，半导体性空穴型锰氧化物超大磁电阻材料为n层和p层，以铁电体为耗尽层(i), 生成了p-i-n型集成体系，以微米（纳米）加工形成了两个背靠背p-i-n结...

报告介绍 报告摘要：　　This talk serves as an introduction of current status of THz science and technology, especially THz interactions with bio-molecules, and their applications in material science, biology, and optoelectronics. The talk will start with a brief introduction of the fundamentals and will use examples to highlight current research, successful applications, and potential developments.