报告介绍 Abstract: 　　Two-dimensional (2-D) transition metal oxide layers have attracted significant interest during the past decade due to their novel emergent properties and their high potential for nanotechnology applications [1]. For practical reasons 2-D oxide layers are usually supported on metal surfaces. This leads to a coupling of the oxide overlayer to the metal substrate, often strong coupling, w...

报告介绍 Abstract:　　Polymers representing soft materials exhibit a variety of functional properties undergoing energy storage, transport and conversion. Among them, we focus our attention on polyvinylidene fluoride (PVDF: -CH2CF2-) and its copolymer with trifluoroethylene (TrFE: -CHFCF2-). They attracted continuous interest over 40 years because of their intriguing ferroelectric and piezoelectric propertie...

报告介绍 Abstract： We discover surprising consequences of the well-known quantum effects such as zero-point Quantum coherence is a key concept in chemical physics and will be discussed in the context of charge mobility/exciton diffusion in organic semiconductors and energy transfer in light-harvesting complexes. I. Coherent quantum transport in disordered systems displays an optimal diffusion constant at an...

报告介绍 Abstract: 　　Two-dimensional electron systems (2DES) formed in semiconductor heterostructures host a rich variety of transport phenomena. At low magnetic field, irradiated heterostructures reveal microwave-induced resistance oscillations (MIRO) and associated zero-resistance state. In this talk, I will give an overview on the main transport phenomena occurring in 2DES when it is driven by microwave...

报告介绍 报告摘要：　　Photoinduced charge transfer plays a key role in the conversion of solar energy. In this work, we introduce a hierarchy of post-Marcus methods based on the linearized semiclassical (LSC) method for calculating the charge transfer rates in organic photovoltaic material. The LSC approximation provides a flexible, rigorous and self-consistent framework for developing computationally feasi...

报告介绍 报告摘要：　　碳基材料在能源转化领域具有广阔的应用前景。目前，有关碳基催化剂的研究仍处于调控粉末状碳材料的微结构和组分阶段。而在实际的电催化应用过程中，往往需在所制备的碳基粉末催化剂中加入聚合物粘合剂（如Nafion 和PVDF），再压制成一定形状的薄膜。然而，聚合物粘合剂的引入会对碳基催化剂的结构和性能造成显著的不利影响。此次报告将围绕这一科学问题和技术挑战，介绍一类新颖的基于聚离子液体的氮掺杂多孔碳膜，这...

报告介绍 Abstract:　　 “Publish or Perish” is an often-heard expression. It is true that a scientist, who does not publish his or her scientific results in a reputable (electronic) journal, will not receive the necessary recognition or scientific respect as a scientist. In this presentation I will discuss some of the various key parameters that are used in scientific publishing to indicate the impact or su...

报告介绍 报告摘要： 固体的局域结构是研究固体在原子到纳米范围内原子的空间排布。纳米固体结构由于表界面效应，长周期的平均晶体结构往往不能准确描述纳米颗粒的本征属性，其结构的局域化需要局域结构的方法和手段表征。本课题组近年对无机固体和纳米固体，如合金PtNi、PtFe、永磁体Ho2Fe17，氧化物CeO2、SnO2 、TiO2，氟化物ScF3等，开展了局域结构和负热膨胀及相关物性的研究。高能同步辐射X射线/中子全散射技术（PDF/nPDF），结合反向蒙...

报告介绍 报告摘要：　　Small angle neutron scattering (SANS), resonant inelastic X-ray scattering (RIXS) and X-ray absorption spectroscopy have been carried out to study the correlations of magnetic properties and electronic/atomic structures in an XY-like spin-glass (SG) state of Ni0.4Mn0.6TiO3 (NMTO) single crystal. SANS presents the texture of toroidal glass and H (magentic)-T (temperature) phase diagram ...

报告介绍 Abstract:　　Superconductivity was and continues to be the most astonishing collective electronic state of electrons in metals. Electricity can be transported without energy loss, and the superconducting state causes magnetic fields to be expelled or excluded from the metal. This latter property enables the superconducting state to be demonstrated on a tabletop: levitation of a magnet above a superc...

报告介绍 Abstract： Here we report a recent joint experimental photoelectron spectroscopy (PES) and quantum chemical calculations study in our group: observation of highly stable and symmetrical lanthanide octa-boron inverse sandwich clusters-La2B8- and Pr2B8-.PES spectra showed simple patterns of these two clusters, suggesting highly symmetric structures. Quantum chemical calculations revealed that bot...

报告介绍 Abstract： Quantum anomalous Hall (QAH) systems are of great fundamental interest and of potential application (e.g. quantum computing) because of dissipationless conduction without external magnetic field.1–3 The QAH effect has been realized in magnetically doped topological insulator (TI) thin films.4–7 However, full quantization requires extremely low temperature (<50 mK) in the in...

报告介绍 Abstract： Since two-dimensional (2D) materials were discovered, particularly graphene and graphene oxide (GO), intensive efforts have been made on utilising these materials as building blocks to form laminar membranes via various methods. The unique 2D channels in these laminar membranes offer a new approach to control the mass transport, which might have some promising potentials in various applic...

报告介绍 报告摘要： 　　产电微生物能够催化降解有机物，将有机物蕴含的化学能转化为电能，具有清洁高效、原位利用/循环利用的优点。然而，微生物催化产业化的前提和难点问题是如何大幅度提高微生物催化降解有机物产电的效率。本质上，微生物催化降解有机物产电的效率主要受微生物胞外电子转移速率制约，因此强化微生物的附着力及电子传递能力可以提升微生物催化降解有机物产电的效率。针对微生物电子传递路径，设计了具有大的孔道、良好的导...

报告介绍 Abstract： Use of synthetic organic approaches1a for the preparation of novel aniline-based materials allow us to exploit their tuneable conductive, redox and optical properties.1b We have thus explored the use of such and related materials in two key areas: Functional 1D Wires: We are exploiting this functional aniline-based platform to prepare novel redox-active cationic surfactants, and inve...

报告介绍 报告摘要： We are fosucsed on protein misfolding and aggregation that occur in stressed cells with deficient proteostasis. These molecular events have been associated with a variety of diseases that are termed as protein misfolding diseases. Protein aggregation is a multiple step process that involves misfolded soluble and insoluble aggregates. It is unclear which of these conformations could lead t...