报告题目：Materials at extreme conditions
报 告 人: Yuejian Wang, Physics Department, Oakland University
报告时间：2016年5月20日（周五）下午4:00
报告地点：物理科技楼101
报告摘要：Pressure along with temperature and chemical composition defines the state of matter. High pressure could decrease the distance among atoms, shorten the chemical bonds, and distort the electron orbitals. Beyond a certain pressure point, materials may reach a new state of equilibrium and transit into a phase with distinctive atomic arrangement and crystal structure exhibiting properties quite different from that stable phase at ambient conditions. For example, under high pressure soft and black graphite transforms into a superhard and light-transparent diamond. With the rapid development of technology (high pressure generation apparatus, synchrotron X-ray, Raman), high-pressure technique has become a prevalent and important tool for exploring the unique nature of matter in solid, liquid, or gaseous state under extreme conditions. In the talk, I will briefly go over the basics of the high-pressure technology, its advantages, and its application in materials physics as well as the study of graphite under high pressure.
个人简介：Yuejian Wang is an assistant professor at the physics department of Oakland University, Michigan. He obtained his PhD in materials physics from Texas Christian University in 2009. After that, he did postdocs at Los Alamos National Laboratory and Yale University, respectively. In 2011, he joined Oakland University as a tenure track faculty member. His research interest focuses on high-pressure materials physics.
报 告 人: Yuejian Wang, Physics Department, Oakland University
报告时间：2016年5月20日（周五）下午4:00
报告地点：物理科技楼101
报告摘要：Pressure along with temperature and chemical composition defines the state of matter. High pressure could decrease the distance among atoms, shorten the chemical bonds, and distort the electron orbitals. Beyond a certain pressure point, materials may reach a new state of equilibrium and transit into a phase with distinctive atomic arrangement and crystal structure exhibiting properties quite different from that stable phase at ambient conditions. For example, under high pressure soft and black graphite transforms into a superhard and light-transparent diamond. With the rapid development of technology (high pressure generation apparatus, synchrotron X-ray, Raman), high-pressure technique has become a prevalent and important tool for exploring the unique nature of matter in solid, liquid, or gaseous state under extreme conditions. In the talk, I will briefly go over the basics of the high-pressure technology, its advantages, and its application in materials physics as well as the study of graphite under high pressure.
个人简介：Yuejian Wang is an assistant professor at the physics department of Oakland University, Michigan. He obtained his PhD in materials physics from Texas Christian University in 2009. After that, he did postdocs at Los Alamos National Laboratory and Yale University, respectively. In 2011, he joined Oakland University as a tenure track faculty member. His research interest focuses on high-pressure materials physics.