报告介绍 Abstract： 　　I will discuss our recent progress on engineering of 2D materials, with a focus on metal ion intercalation and ultra-high temperature treatment (up to 3000-3500K). We developed a nano-battery platform that allows in situ measurement of optical, electrical and structure changes of 2D materials during ion intercalations. We used the nano-battery setup to investigate various properties o...

报告介绍 报告摘要： Many approaches, computational and experimental, are being pursued to solve the protein folding problem. One particularly exciting area is fast time-resolved spectroscopy, both in the infrared and ultraviolet regions of the electromagnetic spectrum, the latter via time-resolved electronic circular dichroism spectroscopy. These spectroscopic methods offer resolution on a nanosecond (or fas...

报告介绍 Biosketch：　　I am a senior editor for Nature. I have worked as a manuscript editor at Nature for 15 years. I am in the physical sciences editorial team, overseeing peer review and making decisions on the editorial suitability of submissions in various areas of materials science and engineering. I handle materials synthesis, characterization, biomaterials, some aspects of soft matter, structural ma...

报告介绍 Abstract： In this talk, I summarize our recent progresses on the modelling of interlayer interactions of various two-dimensional materials, e.g. weakened van der Waals interaction in twisted graphene1 and ReS22, covalent-like quasi-bonding in PtS23/PtSe24 and BP5,6, and subtle balance between inter- and intra-layer interactions in organic molecules7. In addition, air stability of BP was theoretical...

报告介绍 Abstract： The interaction of light with molecular conduction junctions is attracting growing interest as a challenging experimental and theoretical problem on one hand, and because of its potential application as a characterization and control tool on the other. From both its scientific aspect and technological potential it stands at the interface of two important fields: molecular electronics and ...

报告介绍 报告摘要： 马旅雁研究组致力于细菌生物被膜（biofilm，亦称生物膜）的研究，旨在了解细菌的群体行为以及微生物间的信息交流，解析细菌生物被膜形成与瓦解的分子机理，为环境治理中有效发挥生物被膜的功能奠定理论基础，为防治和控制生物被膜相关问题提供理论依据及可能的解决办法。几年来系统的研究了在生物被膜中起关键作用的胞外多糖，从其结构、功能、合成调控到降解及与其它胞外分子的互作等。在Cell Research，PLoS Pathogens...

报告介绍 报告摘要： 天然金刚石自发现以来一直被公认为是自然界中最硬的材料。合成出比天然金刚石更硬的新材料一直是学术界和产业界的共同追求，而且这种追求依赖于可靠的设计理论。根据极性共价晶体硬度的微观模型，的确很难设计出比金刚石更硬的单晶材料。然而，多晶共价材料硬度与显微组织特征尺寸关系的建立，我们发现量子限域效应与霍尔佩奇效应将共同主导多晶共价材料在纳米尺度的硬化行为，纳米结构化仍将成为提高多晶材料硬度的有效...

报告介绍 Abstract：　　Our research program focuses on applying and developing new spectroscopic tools to determine chirality and to establish chirality recognition models at the molecular level. Our recent rotational spectroscopic studies of clusters of 2-fluoroethanol and trifluoroethanol, two common organic solvents, highlight the importance of bifurcated H-bonds and F···F attractive intera...

报告介绍 Abstract： Atmospheric aerosols can severely affect human health and cause allergies, asthma, and cardiovascular and respiratory diseases. Aerosols have also significant effects on Earth’s climate. They have direct effects of Earth’s energy balance by scattering of, for example, incoming solar radiation and indirect effects by serving as cloud condensation nuclei.The first part of the pr...

报告介绍 Abstract： 　　The rapid development of microsystems and nanoengineering has increased the demand for advanced microfabrication technologies. Here, we introduce two kinds of specialty optical fabrication technologies and their applications on the development of functional microdevices and sensors. Firstly, phase-mask assisted laser scanning technologies with high-power UV pulses are demonstrated to ...

报告介绍 Abstract： Phononic crystals are artificial periodical structures with energy bands for sound in momentum space. Dirac conic dispersions can be realized at the Brillouin zone corners of the crystals with hexagonal lattice. By reducing the symmetry of the crystals, the degeneracy at Dirac point can be lifted and a bandgap opens, and two inequivalent valleys with opposite vortex appear. The valley vor...

报告介绍 Abstract： Many of the electronic properties of materials are enclosed in the symmetry of their atomic or molecular lattice. Good examples are ferroelectrics that break space inversion symmetry or ferromagnets that break time reversal symmetry. In recent years advances in scanning probe microscopies show that in addition to these macroscopic phenomena, novel properties emerge at the nanoscale. In ad...

报告介绍 Abstract：Ultracold atoms on optical lattices form a versatile platform for studying many-body physics, with the potential of addressing some of the most important issues in strongly correlated matter. In this talk, I will present experimental results on the characterization of the BEC-BCS crossover with ultracold atoms, the phases of a spin-polarized Fermi gas in one and three dimensions, and ...

报告介绍 Biosketch：Join Dr. Pollack, PhD, University of Washington professor, as he shares his revolutionary findings on water. His work, described as “a revolution in cell biology”, will provide you with new tools to revitalize your own body. He is recognized world wide as a dynamic speaker, who is passionate about frontier science and holistic practices.　　Dr. Pollack is a recipient of numero...

报告介绍 报告摘要： 石墨烯是一种真正意义上的二维晶体体系，单层石墨烯独特的物理性质使其在光学，电学和光电子学等方面有着广泛的应用前景。单层石墨烯可以逐层按AB方式堆垛而成多层石墨烯。两个单层或多层石墨烯可以按不同层数和不同旋转角度进行堆垛，组成多层石墨烯异质结。这些异质结材料具有比其子系统(单层或多层石墨烯)更加丰富的物理性质，为石墨烯的研究提供了无穷的可能性，同时也对材料性能的设计和构造产生了很大影响。拉曼散...

报告介绍 Abstract： The discovery of the two dimensional electron gas (2DEG) at the interface between two band insulators LaAlO3 (LAO) and SrTiO3 (LAO) triggered intensive researches on this system, and intriguing electronic properties have been found in this heterointerface. In this interfacial 2DEG system, the transport properties of the LAO/STO interfacial conducting states are extremely sensitive to the ...