报告介绍 Abstract： Discoveries and rediscoveries of “star” materials with exceptional functionalities have been the central theme of materials science and propelled the modern technologies in the past decades. In this talk, I will share our passion and discoveries while studying perovskite-structured materials including both transition-metal oxides and organic-inorganic halides. Perovskite is pr...

报告介绍

报告介绍

报告介绍 报告摘要： In this seminar, I will brief overview the history of MOF chemistry will be overviewed, and then describe our approaches on pore and function engineering to develop multifunctional MOF materials. The intrinsic optical and photonic properties of metal ions and organic ligands, and guest molecules and/or ions can be collaboratively assembled and/or encapsulated into their frameworks, so we ...

报告介绍 Abstract： Spin Hall effect (SHE) refers to the generation of transverse spin current in nonmagnetic solids by an applied electric field due to relativistic spin-orbit coupling. Spin current generation, detection and manipulation are three key elements of the emerging spintronics. Large room temperature SHE not only provides dissipationless spin current but also is used to probe spin current and to ...

报告介绍 Abstract： Polariton condensates consist of coupled and coherent vertical cavity-photon and semiconductor quantum well matter-excitation fields. I will discuss the concept of light-matter transfer in polariton condensates and its relationship to Andreev scattering at superconductor/normal metal interfaces and to spin-transfer in spintronics. Light-matter transfer relies on the dressing of electronic...

报告介绍 Abstract： Charge transport through and between molecules is central to many important processes in nature. In particular, studying the conductivity of single molecules can contribute to a better understanding of charge transport, and also help develop better molecular wires and other building blocks of molecular electronics, light harvesting devices, etc. We will discuss the results of different ex...

报告介绍 报告摘要： Recent advance in solution phase synthesis has made it possible to obtain nanoparticles (NPs) with their dimensions controlled at near-atomic precision for catalytic applications. In this talk, I highlight two examples demonstrated in our lab on the synthesis and self-assembly of Co-, and Cu-based NPs for enhanced electrocatalytic reactions.Monodisperse Co NPs were synthesized via thermal...

报告介绍 Abstract： The deep understanding of the physical properties of 2D materials requires the study crossing over from microscopic to macroscopic. New quantum phenomena emerge at the mesoscopic and macroscopic level, such as interference effects, quantum confinement effects, and charging effects. For structures with scales larger than 100 nanometers, the ab initio calculations are unfeasible. Tight-bind...

报告介绍 Abstract： Computational chemistry has become a more and more important technique in scientific discovery process. It has been recognized that the computational chemistry methods "can be used to study all kinds of chemistry; from the molecules of life to industrial chemical processes. Scientists can optimise solar cells, catalysts in motor vehicles or even drugs, to take but a few examples.&quo...

报告介绍 Abstract： The remarkable performance of lead halide perovskites in solar cells comes from the long carrier lifetimes and low non-radiative recombination rates, the same physical properties that are ideal for lasers and light-emitting devices (LEDs). I will first discuss a general growth mechanism of anisotropic nanomaterials, in which screw dislocation defects provide the self-perpetuating steps to...

报告介绍 Abstract： Stretchable and wearable electronics is attracting intensive attention due to their promising applications in many areas where electronic devices undergo large deformation and/or form intimate contact with curvilinear surfaces. On the other hand, a plethora of nanomaterials with outstanding properties have emerged over the past decades. In this talk, I will summarize recent advances in st...

报告介绍 Abstract： The problem of unconventional magnetism in materials without d and f electrons has attracted continuous attention. In particular, a lot of efforts have been devoted to understand the origin and effects of magnetic moments induced in graphene with structure defects such as missing carbon atoms, absorption of light atoms such as hydrogen or fluorine. We have measured the magnetoresista...

报告介绍 Abstract： The fundamental energy gap of a solid is not only an excitation energy but also a ground state energy difference (ionization energy minus electron affinity). The corresponding gap in the band structure of the exact Kohn-Sham theory is less than the fundamental gap, as found by Perdew and Levy, and by Sham and Schlueter, in 1982. The reason is that a multiplicative effective potential that...

报告介绍 Abstract： Ultrafast nonlinear spectroscopy and microscopy are powerful approaches for obtaining structural features, equilibrium dynamics, and spatial arrangements of molecular systems. In this talk, I will first describe the application of ultrafast two-dimensional infrared (2D-IR) spectroscopy to oligopeptides that serve as a paradigm for studies of backbone conformations in proteins. Using multi...

报告介绍 Abstract： The photo- and electro-catalysts play a critical role in clean energy generation and conversion technologies. Although the precious metal-based materials are widely recognized as superior catalysts for energy applications, their large-scale commercial use has been hindered by their expensive and scarcity nature. The development of high performance, plentiful and cheap nonprecious-metal ca...