Prof. Choong-Shik Yoo [Washington State University, USA]

  Series Lecture II  

Title: Combinatory Chemistry in Dense Solid Mixtures

Time: 10:00 - 11:00 AM, Tuesday, May 10, 2016

Place: Auditorium Room 410, Building 6, HPSTAR (Shanghai)

Host: Dr. Jung-Fu Lin

Abstract:

In recent years, a significant number of new materials and novel structures have been designed and discovered in dense elemental solids such as H2, B, C, N2, O2, and CO2. Yet, few studies have been done on their mixtures, despite the possibility they offer opportunities for development of a greater number of new materials via solid-state combinatory reactions, as well as possibility to control the transitions, properties and stabilities of materials. In this lecture, I will describe several examples of combinatory reactions in dense solid mixtures (both homogeneous and heterogeneous) and point out several important chemical concepts governing the transformations of dense mixtures, including internal chemical pressure, metastability, miscibility, and kinetics.

Biography of the Speaker:

Choong-Shik Yoo is a Professor in the Department of Chemistry and in the internationally recognized WSU Institute for Shock Physics. Prior to his arrival at WSU, he worked for nearly 20 years at the Lawrence Livermore National Laboratory where he developed and led a large multi-disciplinary research group in High Pressure Physics. Professor Yoo received his Ph.D in Physical Chemistry in 1986 from UCLA. His research expertise is on novel materials research under extreme environments of pressure, temperature, and chemical composition. His work has utilized static and dynamic high-pressure capabilities coupled with the state-of-the-art laser spectroscopic methods and x-ray diffraction and spectroscopy at the national synchrotron facilities. Dr. Yoo’s current research studies focus on energetic materials and processes, as well as developments of novel high energy density materials, reactive materials, wear-resistive super hard materials, and novel functional nanocomposites and intermetallics. Professor Yoo twice earned the DOE awards (1995 and 2006), for Excellence in Weapons Materials Research. He currently serves as the US Regional Editor for High Pressure Research and is a member of American Chemical Society, American Physical Society, American Geophysics Union, Materials Research Society, and Three Materials Society.