报告介绍 Unlike conventional infrared transmission/reflection spectroscopy, which probes the longitudinal conductivity sxx of materials, infrared polarization-sensitive magneto-spectroscopy probes the transverse/Hall conductivity sxy. Whereas sxx reflects the sum of the optical response for left and right circularly polarized light, sxy is related to the difference and therefore is sensitive to small changes...

报告介绍 报告摘要：We are keen to develop chiral guanidine as general brønsted base catalyst. We found them to be excellent enantioselective catalysts for Michael, Phospha-Michael and Diels-Alder reactions. In this seminar, we would like to present these reaction and two other reactions relating to the enantioselective transfer of protons. In the first reaction, the conjugate addition of arylthiol to ...

报告介绍 The selective oxidation of alcohols to the corresponding aldehydes or ketones, in particular benzyl alcohol to benzaldehyde, can be effectively catalyzed using noble metal nanoparticles. Choosing an appropriate support with well-defined structure and suitable surface chemistry is a feasible and effective approach to make metal nanoparticles with specific size, shape, structure, and to avoid agglomer...

报告介绍 A morphotropic phase boundary (MPB)-like behavior driven by epitaxial strain has been observed in a lead-free multiferroic BiFeO3 thin films and the strain-driven phase transitions were widely reported to be iso-symmetric Cc-Cc ones by recent works. We suggest that the tetragonal-like BiFeO3 phase identified in epitaxial films on (001) LaAlO3 single crystal substrates is monoclinic MC. This MC phase...

报告介绍 Carbon-based nanostructures are promising candidates for nano-electronics due to their natural small scales as well as their mechanical, thermal, and electrical properties. In this talk, I will discuss some issues related to dissipation in carbon nanotubes for use as interconnects under electric stress, as well as non-linear transport and modeling in graphene field-effect transistors. Our approach i...

报告介绍 报告摘要：A key application of nanotechnology is in the clean energy and clean technology sector. Work at QUT covers a range of solar energy applications of nanostructured materials and their characterisation, including in dye-sensitised solar cells, organic polymer-carbon nanotube hybrids, solar photocatalytic production of hydrogen and solar photocatalytic water purification. Dye-sensitised solar ...

报告介绍 Abstract: In this talk, I will present a d-wave superconducting ground state for a doped Mott insulator, which is distinguished from a Gutzwiller-projected BCS superconductor by an explicit separation of Cooper pairing and resonating valence bond (RVB) pairing. Such a state satisfies the precise sign structure of the t-J model, just like that a BCS state satisfies the Fermi-Dirac statistics. I will ...

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报告介绍 报告摘要：To control and understand strength and ductility of materials is always one of the most important issues for materials sciences, not only for practical applications but also for fundamental sciences. This talk will survey two types of strengthening ways: extra-electron induced covalent strengthening in quasicrystal-related aluminides and oxygen-enriched nanoparticle dispersion-strengthenin...

报告介绍 报告人简介　　胡教授1978—1982年在美国斯坦福大学从事黄体酮的合成研究并获博士学位，1999年当选发展中国家科学院院士（第三世界科学院院士），2005年被评为英国皇家化学学会院士，是IUPAC有机化学命名委员会委员，是美国约翰霍普金斯大学、北京大学等著名大学兼职教授。　　胡纪如教授在有机硅化学、药物化学、高分子化学、天然产物全合成化学等领域做出了卓越的贡献。近年来，专注于生物科技、基因工程与药物开发领域研究，...

报告介绍 陈创天    1937年出生于浙江省奉化市，1962年毕业于北京大学物理系，现任职于中国科学院理化技术研究所晶体中心主任、研究员。1990年当选为第3世界科学院院士，2003年当选为中国科院院士。陈创天教授是国际知名的晶体材料科学家，他提出“晶体非线性光学效应的阴离子基团理论”在国际学术界得到很高评价，已被国内外的科学家逐渐接受并应用于新型非线性光学材料的探索。在中科院福建物质结构研究所期间，他...

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报告介绍 In my talk I will present a general overview of the business of Nature Publishing Group, which includes the Nature journals, but also a number of other ventures. I will then describe the editorial policies of Nature Materials, which are shared by all journals from the Nature family. Based on these, strategies are presented on how to interact with our editorial office, and I will also provide brief t...

报告介绍 Electron Momentum Spectroscopy (EMS) is a powerful “orbital imaging” technique, which enables direct experimental reconstructions of one-electron transition momentum densities associated to specific ionization channels. In this talk, we will illustrate for a number of cases treated by our group over the last 10 years how a proper analysis of EMS experiments gives insight in momentum spac...

报告介绍 In this talk we will discuss in some computational and analytical details the issue of half-metallicity in zig-zag graphene nanoribbons and nanoislands of finite width, i.e. the coexistence of metallic nature for electrons with one spin orientation and insulating nature for the electrons of opposite spin, which has been recently predicted from so-called first-principle calculations employing Density...