It is well understood that material properties are encoded in their three-dimensional arrangements and dynamics under external stimuli. Here, I introduce a genetic evolution 3D method, simulation annealing (SA)-energy minimization (EM), to quantitatively describe single-atom dynamics at 3D atom high space/time resolution in helix and moire materials composed of not well defined atom columns. The detail algorithm of SA-EM for C60/ CNT, DNA and Ag nano-icosahedron will be presented in the meeting. The most challenge to reveal the 3D atom dynamics with high space/time resolution is the “radiation damage”. Reducing radiation damage is becoming a crucial factor in the development of future electron microscopes. In my talk I will briefly introduce the concept of interaction-free (quantum) electron microscopes. The concept of interaction-free imaging utilizing a Mach-Zehnder interferometer has been proposed originally in 1993 by Elitzur and Vaidman. Using the Quantum Zeno effect the quantum efficiency for interaction-free measurements can be increased to near 100% with increasing number of interrogations provided the sample is a perfect (thick) absorber. In my talk, I will discuss the design of a quantum electron microscope which is composed of a quantum resonator and the imaging theory of quantum electron microscopes.

陈福荣，教授，现任香港城市大学协理副校长暨内地研究院院长、香港城市大学材料科学工程系讲座教授及高时空分辨电子显微镜中心主任。其主要研究方向为三维空间原子动态电子显微学、量子电子显微镜的设计与制造。陈教授荣获多项奖项与荣誉，包括美国显微镜学会（超快/超高压）电子显微镜设计创新奖，以及欧洲学术界年度最佳文章奖。已发表SCI论文350余篇，涵盖Nature、Nature Materials、Nature communications、PNAS、Angew Chem.等，平均每年受国际会议邀请作报告5次。此外，他还创办了两家高科技公司，分别致力于电致变色节能智能玻璃和高端电子显微镜的研发与生产。