报告时间：2013年3月6日（星期三）下午14:00

报告地点：能源楼一号楼一楼会议室

报告人：Prof. Etsuo Akiba

Department of Mechanical Engineering, Kyushu University

报告人简介：

Professor of Department of mechanical engineering, Faculty of Engineering and Lead of the Hydrogen Storage Material Division and Principal Investigator of the International Institute for Carbon-Neutral Energy Research (I2CNER), Kyushu University.

1974 B.S., Department of Chemistry, Saitama University, Japan

1976 M.S. in Chemistry, Faculty of Science, The University of Tokyo, Japan

1979 Ph.D. in Chemistry, The University of Tokyo, Japan

报告摘要：

There are more than a few meanings of “structure” from sub-nano to micron size. We usually called them, crystal structure, morphology, shape, form and etc. depending of their size.

In this lecture, I will focus on crystalline in poly crystalline materials including hydrogen storage materials. There must be at least two types of “structures” in a crystalline; crystal (or averaged structure) and local structure (or pair distribution function). In addition, because hydrogen has only one electron, any method sensitive to electrons cannot be applied. Therefore, neutron is only the method to analyze both crystal and local structures.

Here, I will introduce how to analyze the diffraction data to obtain these structures. Then, some of the examples will be introduced.

Finally, we will discuss the changes in structures with hydrogenation and dehydrogenation.