报告介绍 Abstract： Lanthanide-doped nanoparticles exhibit unique luminescent properties, including a large Stokes shift, a sharp bandwidth of emission, high resistance to optical blinking, and photobleaching. Uniquely, they can convert long-wavelength stimulation into short-wavelength emission. These attributes offer the opportunity to develop alternative luminescent labels to organic fluorophores and quant...

报告介绍 Abstract： Weyl semimetals are three-dimensional topological states of matter, in a sense that they host paired monopole and anti-monopole of Berry curvature in momentum space, leading to the chiral anomaly. Here, we study the quantum magnetoconductivity of Weyl and Dirac semimetals in the diffusive regime. In the presence of a strong magnetic field along the direction connecting two Weyl nodes, it ...

报告介绍 报告摘要：　　过去，现在和可预见的将来，电能都是最方便的能源形式，另一方面，热则随时随地无所不在，多数场合被称为“废热”。那么有什么方法变废为宝吗？是的，热电效应是最简单的热能电能间直接转化的技术。做为一种全固态绿色能源转化技术，热电转化的核心是开发高性能热电材料，其中的材料合成与无机化学，输运机制研究则与半导体物理有诸多相同相通之处，但与纯基础研究不同，高应用性能对热电材料本身有诸多特殊...

报告介绍 Abstract: 　　The nucleosome, comprising DNA and an octameric histone protein core, is the fundamental packing unit of eukaryotic genes that must be accessed and processed by factors and polymerases during various genome transactions such as transcription, replication, and DNA repair. Spontaneous DNA opening motion at the nucleosome termini has long been hypothesized to enable gene access durin...

报告介绍 报告摘要： 　　The Bloch bands in many crystals have a degenerate set of energy extrema in momentum space known as valleys. For band-edge carriers, the valley index becomes a discrete degree of freedom in addition to spin. In this talk, I will show that in monolayer transition metal dichalcogenides, the pair of valleys which are time-reversal of each other are distinguishable by their opposite value...

报告介绍

报告介绍 报告摘要： 　　Sediments are important sinks for hydrophobic compounds discharged to surface waters. Hydrophobic compounds tend to associate strongly with black carbon, which is thought to comprise 10 to 30 % of total organic carbon in aquatic sediments. Sorption to black carbon has been assumed to hinder degradation by pathways that occur in the aqueous phase. However, recent studies indicate that ...

报告介绍 报告摘要：　　Physical vapor deposition provides a controllable means of growing two-dimensional metallic thin films and one-dimensional metallic nanorods. While theories exist for the growth of metallic thin films, their counterpart for the growth of metallic nanorods is absent. Because of this absence, the lower limit of the nanorod diameter is theoretically unknown; consequently the experimental ...

报告介绍 报告摘要： Recent experimental observation of magnetic droplet solitons and skyrmions in NC-STOs and ferromagnetic thin film with perpendicular magnetic anisotropy add two new members to the family of distinct and useful nanoscale magnetic objects. In this talk, I will present some of our recent work on micromagnetics simulations of magnetic droplet solitons and skyrmions in constricted geometries.&...

报告介绍 Abstract:　　Pure spin current, a flow of spin angular momentum without accompanying electric charge current, is a powerful mean for investigating the spin-dependent transports. In this talk, the basic transport properties for the pure spin current created by the nonlocal spin injection are introduced. Then, I show that the recent experimental results on the transports of the pure spin current in th...

报告介绍 报告摘要： 太阳能是理想的清洁能源，寻找能够经济、高效地将太阳光转换成其它可利用的能源形式（如电能、化学能等）的新型功能材料一直是能源科学领域的研究核心。 几年前才发现的钙钛矿太阳能电池以其独特的物理性质、醒目的光电转化效率、诱人的工业应用前景等特点，在国际上迅速掀起了巨大的研究热潮。低温及结构简单并进而导致低成本是工业界始终不渝的追求。发现了一种简单结构无空穴阻挡层的碘-氯体系钙钛矿太阳能电池并对其...

报告介绍 Abstract: 　　In this talk, I will introduce two pieces of work in two-dimensional layered materials done in our group. In the first one, we report an unusual valley polarization (VP) up to 70% for B exciton in monolayer MoSe2, while that for A exciton is less than 3%, and a small but finite negative VP for A- trion. These results reveal several new intra- and inter-valley scattering processes which...

报告介绍 报告摘要： 　　In this talk, I will introduce you the development of the Kondo effect and Kondo resonance in simple metals/alloys with dilute magnetic impurities. The local magnetic moment formation is one of the most important issues. Then the basic heavy Fermi liquid physics and novel superconductivity are briefly mentioned. After that, I will talk about the original metallic ferromagnetism, ...

报告介绍 报告摘要： 　　Atomically thin Group VI transition metal dichalcogenides crystals (TMD) emerge as a family of intrinsic 2 dimensional (2D) semiconductors and come across a transition from indirect gap materials at the bulk form to direct band gap semiconductors at the monolayer limit. Monolayer TMDs are ideal quasi-two-dimensional semiconductors with a sizeable bandgap in the visible and near infrar...

报告介绍 报告摘要：　　Synthetic polymers with pendent sugar moieties, normally termed ‘glycopolymers’, are able to interact with lectins as multivalent ligands in a similar manner to natural glycoproteins. Glycopolymers have been synthesized for investigating their interaction with bio-molecules and application in disease treatments, including influenza and some cancers. In addition, cells have ...

报告介绍 报告人简介：　　麻生明院士，有机化学家，中国科学院院士，现任浙江大学理学部主任、长江特聘教授，中国科学院上海有机化学研究所研究员。主要从事联烯及其类似物化学方面的研究。引入亲核性官能团，解决了联烯在金属催化剂存在下反应活性及选择性调控，为环状化合物的合成建立了高效合成方法学；发展了从2，3－联烯酸合成γ－丁烯酸内酯类化合物的方法；建立了过渡金属参与手征性中心形成的一锅法双金属共催化的合成方法。同...