The talk is organized in two parts. In the first ten minutes, the Institute of Physics, CAS, in Beijing will be briefly introduced. The institute was initiated in 1928 and is devoted to fundamental research for the improvement of our knowledge on condensed matter physics, optical physics, atomic and molecular physics, and biophysics. Currently, it has about 300 staffs and 600 graduate students in 10 research labs.
The second part is about the speakers personal research interest: Formation and decay of surface-based nanostructures. Self-assembly has been ingeniously used in nature, such as the formation of beautiful snowflakes. However, our present understanding is still too shallow to achieve such complex process. By using ab initio kinetic Monte Carlo simulation, we can uncover some of the building regulations of the surface-based nanostructures down to atomic-scale. Here a one-, two-, and three-dimensional Ehrlich-Schwoebel (ES) barrier in kinetics-driven growth will be introduced. Within this framework, it will be shown how one can control the island shape, the island instability, and the film roughness. Furthermore, a novel concept: a true upward adatom diffusion on metal surface, which is beyond the traditional Ehrlich-Schwoebel (ES) barrier model will be discussed.


Vortragssprache: Englisch