报告介绍 报告摘要： Recent times have seen a surge of activity in the exploration of two dimensional atomic layered structures with a range of properties. Here we will discuss our recent efforts in exploring various two-dimensional materials including graphene, hexagonal boron nitride (h-BN), various dichalcogenide systems and hybrid atomic layers consisting of multiple compositions. Scalable synthesis throu...

报告介绍 Abstract:　　Topological insulators (TIs) are novel quantum materials with topologically nontrivial band structure induced by strong spin-orbit coupling. Breaking the time reversal symmetry (TRS) in TIs has been predicted to create a variety of exotic topological magnetoelectric effects such as image magnetic monopole and quantized anomalous Hall effect. In this talk we report transport studies of m...

报告介绍 Abstract:         Current medical imaging modalities rely on differences in tissue properties rather than on chemical-content changes deep inside the body. Consequently, a biopsy is routinely needed for ultimate diagnosis of a malignancy. Thus, we need noninvasive imaging technologies that can be used in vivo and can determine in real time the chemical content of d...

报告介绍 报告摘要： Self-assembly has been approved to be a useful method to fabricate oxide thin films with a rich variety of periodic nanoscale patterns. Recent efforts have been focused on how to make the self-assembly controllable. In a film-on-substrate geometry, epitaxial composite films can be divided into two forms: horizontal and vertical. Success of the investigation critically replies on obtain an...

报告介绍 报告摘要： 　　金纳米棒是近年来广受关注的一类近红外光学材料，具有波长可调的、强的近红外表面等离激元共振吸收峰和极好的光热转换效率，在生物医学等领域展现出极好的应用价值。 本次报告的内容主要讲述报告人课题组近年来在相关领域的研究进展。在合成技术方面，我们建立了“种子介导外延生长法”，以金纳米棒为种子，在水相下合成出了金/金属硫化物核壳结构复合纳米材料，并通过离子交换技术有效调节壳层成分，...

报告介绍 Biosketch:　　Dr Ganguli is the founding Director of Institute of Nano Science and Technology in Mohali (India) where he is building strong research teams on cancer therapeutics, solutions for clean energy using nanotechnology, online diagnostics and nanotoxicology. He obtained M.Sc (chemistry) degree from University of Delhi , PhD from Indian Institute of Science , Bangalore and did post docto...

报告介绍 报告摘要： Photocatalysis has attracted continuous interest and extensive research around the world due to its potential applications in energy and environmental fields since the discovery of photolysis of water at a semiconductor TiO2 electrode in 1972. With persistent efforts over the last forty years, significant progress has been made with the assistance of both nanotechnology and advanced chara...

报告介绍 报告摘要： Mesoscopic properties emerge when the size of an object matches a characteristic physical length scale, such as the exciton radius in a semiconductor or the coherence length of Cooper pairs in a superconductor. Nanowires are particularly interesting in this context as quasi-1D materials. By using anodic alumina and track-etched polymer membranes as templates, we have made “striped&r...

报告介绍 Abstract: 　　Inter-atomic interactions have been a key source of systematic uncertainty for the world’s best atomic clocks in the past six years. Thanks to the development of ultrastable lasers with 1×10-16 instability, these interactions are now characterized to very high precision, which not only allows our single clock ("JILA SrII") to achieve the best performance in two ke...

报告介绍 报告摘要： Small unsaturated hydrocarbons, such as acetylene, ethylene, allene, methylacetylene and propene, are crucial intermediates in hydrocarbon combustion, where their dominant consumption pathways are reactions with ground-state oxygen atoms, O(3P). These reactions are characterized by a variety of energetically open, competing radical and molecular product channels, some of which can take pl...

报告介绍 Abstract: 　　Graphene carrier dynamics and optical absorption property have attracted lots of interest due to its potential application in photonics and optoelectronic devices. Before, normally incident beam was wieldy used to study the carrier relaxation process and optical absorption of graphene. In this talk, I will present our pump-probe experimental work on graphene carrier dynamics process wi...

报告介绍 报告摘要： 　　The description of nucleation has been dominated by the classical nucleation theory (CNT) for more than 80 years. However, significant problems exist for the understanding and description of real nucleation or crystallization events using CNT. Most problematic in CNT is certainly the assumption of bulk properties even for the smallest metastable clusters. Instead, it has turned out fo...

报告介绍 报告摘要： 　　To make two-dimensional materials available in real electric devices, it is highly desired to design new properties which are naturally absent in native 2D materials. Here, we will present our recent theoretical studies on the electronic, magnetic, and other properties of graphene-like materials. We will show that functionalization maybe the possible way to tune the properties of 2D m...

报告介绍 Biosketch:　　Prof. Miron Ya Amusia is a famous atomic physicist. He is Fellow of American Physical Society since 1995 and an Academician of Russian Academy of Natural Sciences since 2002. His research field covers theory of the many-body systems, interaction of radiation and electron with atoms, molecules, clusters,fullerenes and endohedrals, as well as theory of electron gas. In this talk, he will...

报告介绍 Abstract:      　　A research field of molecular spintronics attracts attentions. One of advantages of organic molecules for the use in spintronics devices is that the spin and electronic states are strongly correlated with their structures. By using ‘molecule switching’ with outer simulations like as current and light, a single spin of a single molecule could be...

报告介绍 报告摘要： Spin-orbit coupling is one of the most interesting concepts in condensed matter physics. Anomalous Hall effect is one example of the many concequencies of spin-orbit coupling. Conventional wisdom assumes that the anomalous Hall effect is proportional to the net magnetization of a material. However, using simple symmetry arguments and first-principles calculations, we counter this assumpti...