报告介绍 Biography：　　Zhen Zhang received his B.S. degree in Chemistry from Nanjing University. Then, he entered Dalian Institute of Chemical Physics, the Chinese Academy of Sciences and completed his Ph.D. degree with the thesis on ultrahigh vacuum surface science and model catalysis under the supervision of Professor Xinhe Bao. Afterwards, he became a postdoc at University of Virginia under the directors...

报告介绍 Abstract:　　In this talk, I will propose that the mixed valence phenomena in some of the rare earth compounds will naturally lead to non-trivial topology in band structure. One of the typical examples is SmB6, where the intermediate valence of Sm generates band inversion at the X point and the non-trivial Z2 index. Other than SmB6, YbB6 and YbB12 are both mix valence compounds. By applying LDA+Gutz...

报告介绍 报告摘要： 　　As advances in aberration-corrected transmission electron microscopy (TEM) have enabled the determination of the three-dimensional structure of materials with sub-angstrom resolution, the recent development of in situ TEM in combination with scanning probe techniques allows us to study the dynamic behaviors of nanostructures under applied fields or stress while the atomic structure is...

报告介绍 Cooks教授简介： 　　R.Graham Cooks教授于1971年至今在美国Purdue大学化学系任教，现任该系杰出教授(Henry Bohn Hass Distinguished Professor)。主要研究方向为质谱学，曾任美国和国际质谱学会主席，中国质谱学会荣誉会员，1985年被授予质谱领域的最高荣誉Thomson奖。由于在离子阱串联质谱领域的杰出贡献，2002年获诺贝尔化学奖提名。2010年当选美国科学与艺术院院士，2013年获Dreyfus奖。 　　Cooks教授是国际质谱领域最著名科学...

报告介绍 Abstract: 　　Investigation on organic semiconductors (OS) has greatly been motivated by device applications such as light-emitting diodes (LED), field-effect transistors and solar cells. Recent years, organic spintronics including spin injection and transport, magnetic-field effects in these materials has become a new hot subject of research. Especially a strong magnetic-field effect (OMFE), i.e. a...

报告介绍 Abstract: This presentation includes following two topics:1) Porous metal-organic frameworks (MOFs) as platforms for functional applications2) Metal nanoparticle-catalyzed hydrogen generation from liquid-phase chemical hydrogen storage materials. Biosketch:　　Qiang Xu received his PhD degree in Physical Chemistry in 1994 at Osaka University, Japan. After one year working as a postdoctoral fell...

报告介绍 Abstract　　Clean and efficient power systems based on solid oxide fuel cells have been under development for a variety of applications by many companies in Europe, Asia and North America for the last three decades. Bloom Energy (USA) has begun commercialization of large distributed power generation systems (>100 kW), Kyocera and its partners (Japan) of residential CHP units (700 W), and Lilliput...

报告介绍 Abstract: 　　Inter-molecular excited states are essentially inter-molecular electron-hole pairs with tunable electric and magnetic dipoles in organic semiconducting materials. It has been experimentally observed that inter-molecular excited states are sensitive to a low magnetic field (< 100 mT), leading to a magnetic field-dependent singlet/triplet ratio. Because the singlets and triplets have ...

报告介绍 报告摘要：　　As the evidence of global climate change becomes ubiquitous and the resulting environmental impact is increasingly severe, there is a pressing need to mitigate the negative effects of fossil energy consumption, of which CO2 emission is the major concern. Photocatalytic reduction of CO2 offers a promising solution because it not only reduces the amount of CO2 released to ...

报告介绍 报告摘要： Understanding charge separation and recombination processes and developing materials that can efficiently direct charge carriers with nanoscale precision are of fundamental importance in advancing next-generation electronics, optoelectronics and energy technologies. In particular, low-dimensional materials with their inherent shape anisotropy provide promising platforms. In this talk, I w...

报告介绍 Abstract:Although silicon-based CMOS devices have dominated the integrated circuit applications over the past few decades, it is expected that the development of CMOS would reach its limits after the next decade because of the difficulties in downsizing and some fundamental limits of MOSFETs. However, there are no promising candidates which can replace CMOS with better performance with high-density ...

报告介绍 报告摘要： The advancement of sensing technologies makes ever new natural phenomena accessible to experimental examination. The next sensing frontier is set by the detection of individual electron and nuclear spins in ambient conditions that are starting to become accessible with the help of defect centers in diamond. Indeed, the detection of tiny magnetic fields emanating from small numbers of spin...

报告介绍 Abstract: 　　The monolayers of group VI transition metal dichalcogenides feature a valence band spin splitting with opposite sign in the two valleys located at corners of 1st Brillouin zone. This spin-valley coupling, particularly pronounced in tungsten dichalcogenides, can benefit potential spintronics and valleytronics with the important consequences of spin-valley interplay and the suppression o...

报告介绍 报告摘要： We explore the two most exciting properties intrinsic to magnetic insulators, namely spin-filter effect and interfacial magnetic proximity effect. The former is based on spin dependent quantum tunneling across the magnetic barrier, where the two spin channels face different tunnel barrier heights and dramatically different tunnel probabilities, enabling the barrier actively filtering spin...

报告介绍 报告摘要： In this talk, we will report our progress in developing an AFM based, and scalable (batch processed tip) non-resonance microwave impedance microscope that achieves a resolution ~ 50 nm and reduces stray field coupling. The non-resonance approach and merge with the AFM platform also greatly reduce many of the “practical problems” that severely compromises advances of the e...

报告介绍 Biography:　　Baron Peters received his Doctorate in Chemical Engineering (Ph.D.) from the University of California, Berkeley in 2004 under the instruction of Arup Chakraborty and Alexis T. Bell. He pursued postdoctoral studies under Bernhardt L. Trout at the Massachusetts Institute of Technology and also under Berend Smit in the CECAM at the Ecole Normale Superieure in Lyon, France. Baron join...