报告题目：High-throughput measurements of thermophysical properties using ultrafast laser based pump-probe metrology

报告时间：2013年12月16日,下午15：00

报告地点：光学楼525

报告人简介：

      Mr. Changdong Wei joined Department of Materials Science & Engineering at the Ohio State University as a Ph.D student working with Prof. Ji-Cheng Zhao after earning his Bachelor’s degree in Optical Science & Engineering from Fudan University in 2009. His current research focuses on developing novel ultrafast laser metrology approaches of materials properties; high-temperature high-strength steels; thermal and electrical transport behaviors of metallic materials systems.

报告摘要：

        Spatially resolved measurements of thermophysical properties have attracted a lot of research interests ranging from nanostructure engineering and microelectronics to computational databases constructions and alloy design. In this talk, we will review the pump-probe measurement techniques we have developed for thermal conductivity, heat capacity and coefficient of thermal expansion (CTE). These methods have been tested as accurate and robust. A diffusion multiple is a metal junction made of three or more metal blocks to create solid-solution phases of various compositions and intermetallic compounds by long-term high-temperature annealing. These micron-scale-spatial-resolution measurement methods, together with diffusion couples/multiples, will greatly promote the measurement efficiency – orders of magnitude higher efficiency than traditional individual alloy method. This high-throughput approach will also greatly accelerate the establishment of composition-structure-property relationship, which is very critical in the newly emerging disciplines of Integrated Computational Materials Engineering (ICME) and Materials Genome Initiative (MGI). Examples of typical applications on several materials systems will be discussed.

   欢迎参加！会后将和光科系的研究生进行座谈，请没有课的研究生积极参加。