报告介绍 报告人简介：　　章明秋，男，中山大学化学学院材料科学研究所所长，教授，博士生导师，教育部长江学者特聘教授，国家杰出青年科学基金项目获得者。兼任中国材料研究学会常务理事、亚澳复合材料协会（AACM）常务理事、《复合材料学报》（主编）、“Composites Science & Technology”（副主编）等职。长期从事高分子及其复合材料的科研与教学，内容涉及增强聚合物的力学性能，纳米粒子表面改性及其高分子复合材料，植物基复合材...

报告介绍 Abstract:　　Two-dimensional layered electrides have attracted significant attention as a new class of 2D materials owing to the presence of unusual anionic electrons (AEs). The electride layers are more strongly bound by ionic interactions involving AEs compared with van der Waals layers, which is also critical to the physical and chemical properties of the materials. However, to date, the role of ...

报告介绍 报告摘要：　　形如AMnPn2(A= Ca, Sr, Ba, Yb, Eu; Pn = Bi, Sb)的锰基112化合物被认为有可能实现Weyl半金属态，关键是如何在这类化合物中引入铁磁性。非化学计量比的Sr1−yMn1−zSb2(y, z< 0.1)单晶观察到的铁磁性[1]存在争议。为了研究SrMnSb2单晶的本征磁性，我们在不同条件下生长了SrMnSb2单晶，并进行了磁性、输运、微结构、中子衍射等研究。粉末中子衍射在300<T<580K的温度区间没有观察到铁磁相变。单晶衍射证实了T<...

报告介绍 Abstract:　　Plasmonic tips can be used to effectively confine light on the Å scale, surpassing the diffraction limit by more than three orders of magnitude, and setting a new record in spatial resolution of optical microscopy. This is put to use in tip-enhanced Raman spectromicroscopy (TER-sm), which allows the imaging of dynamical state. Seeing an atom with chemical selectivity, the vibration of a...

报告介绍 报告摘要：　　全固态热电转化过程是实现热能-电能直接转化的最简单的绿能技术。传统热电研究的核心是研发高性能热电材料，基本属于半导体物理和固体化学的范畴，主要涉及材料中的电荷和晶格两个自由度。本次报告将从“流”和“熵“的角度来解读材料中的一般性的热电过程，并以（锗，铅，锰）掺杂的碲化锡为具体例证，从高（构型）熵合金四个核心效应的角度来看待高熵合金化对热电材料性能的影响，尤其关注载流子散射机制随组元增加...

报告介绍 报告摘要：　　聚合物电解质膜燃料电池技术可以在温和的工作条件下高效、清洁地把储存在氢气里的化学能转化为电能，被普遍认为有潜力取代传统的内燃机技术，帮助解决人类社会在能源和环境上所面临的问题。经过数十年的研究和发展，聚合物电解质膜燃料电池技术已经取得了一些长足的发展，然而目前并没有实现真正的大规模应用。其中一个主要应用瓶颈来源于其阴极（即氧气还原电极）铂基催化剂的高成本。研究和开发低成本、高性能的铂合...

报告介绍 报告摘要：　　冷原子干涉仪是一种新型的高精度绝对重力测量仪器。它利用微观的原子作为测试质量，基于冷原子物质波干涉的方法实现精密的重力加速度测量。冷原子作为一团独特的量子物质，利用它可以实现类似与光波干涉的原子物质波干涉，通过激光脉冲实现原子波包的分束、偏转、合束，从而实现原子干涉条纹，重力加速度会改变微观原子的下落路径，因此改变干涉条纹的相位。通过提取原子干涉条纹的相位，得到重力加速度的信息。与经典...

报告介绍 报告摘要：　　纳米加工技术的兴起与发展极大的推动了各个科学领域的基础研究和工程建设的发展。复旦大学信息学院陈宜方团队利用“复旦大学微纳科技平台”拥有的国际先进的、完整的现代化加工设备和条件，建立起了具有国际水平的纳米加工工艺基础。目前正在将这个工艺技术应用到纳米电子、纳米光子学（包括可见光波段的超材料、超表面材料、超分辨聚焦、光场调控、纳米仿生学）和X射线光学部件的研制等领域，取得了具有国际先进水平...

报告介绍 Abstract：　　Quantum control of systems plays an important role in modern science and technology. We focus in the spins in solids which are important platform for quantum information science. In this talk, I would like to present our recent progress in quantum control over spins in nitrogen-vacancy centers in diamonds [1-4]. The initialization, readout and high-fidelity quantum gate operations of s...

报告介绍 Abstract:　　When the potential energy surface (PES) does not have a special form (e.g. a sum of products), it is common to use quadrature to compute a vibrational spectrum. Direct-product quadrature grids are most popular. The size of a direct-product grid scales exponentially with the number of atoms and it is not not possible to store values of the PES for molecules with more than 5 atoms. In thi...

报告介绍 报告摘要：　　在半导体载体中负载特定的金属粒子，合成一系列负载型莫特-肖特基催化材料。应类复合纳米催化剂对于催化转移氢化，催化加氢，催化氧化，光催化，电催化等诸多反应也都表现出高催化效率、选择性和循环稳定性。诸多催化剂催化活性或者选择性的明显改善皆归因于我们对半导体载体和活性纳米粒子界面的功函与能带结构的针对性调控。而这种界面效应，也进一步强化了金属纳米粒子自身的化学稳定性，为该类复合催化材料在精细...

报告介绍 Abstract：　　Majorana zero mode (MZM) can be used in fault-tolerant quantum computation relying on their non-Abelian braiding statistics, therefore, lots of efforts have been made to find them. Signatures of the MZM have been reported as zero energy modes in various systems. As predicted, MZM in the vortex of a topological superconductor appears as a zero energy mode with a cone like spatial distri...

报告介绍 Abstract:　　Femtosecond laser pulses in the ultraviolet, visible, and near-infrared are very efficient in promoting reactions at metal surfaces that cannot be initiated by thermal activation [1,2]. In pump-probe time-resolved vibrational spectroscopy, the femtosecond laser pulse (the pump) is combined with an IR pulse (the probe) in an attempt to time-resolve the initial dynamics of the adsorbate b...

报告介绍 报告摘要：　　量子材料，包含拓扑材料、超导材料、二维材料等，是非常有望带来颠覆性应用的新型材料。二维材料由于其与当代硅基芯片工艺兼容而有望实现规模化应用，成为当代跨学科交叉研究的热点材料体系。二维材料由于其原子层结构而具有极大的比表面积，其电子态和声子态都分布在表面。因此二维材料对界面非常敏感，跟其它材料在界面上的相互作用可以显著地改变其生长动力学和物理性质。通过设计和利用这种界面相互作用，我们可以...

报告介绍 报告摘要：　　Radiation damages to living tissue play an important role in DNA mutation. In addition to the primary ionizing and secondary particles damaging mechanism, molecular environment can also play important role. Here, we report two new ionization-fragmentation mechanisms which can only be happened in hydration/cluster system: (i) the intermolecular Coulombic decay (ICD) where one primary io...

报告介绍 Abstract：　　Electrical control of quantum bits could pave the way for scalable quantum computation. An acceptor spin qubit in Si, based on spin-3/2 holes, can be controlled by electrical means using a gate electrode, which offers fast one- and two-qubit rotations and long coherence times at certain sweet spots. The relaxation time T1, while allowing 105 operations, is the primary limiting factor [...