物理大讲堂—名家系列讲座(十九)

时间:2019-09-12    点击:

报告题目:Synthesis of novel compounds with unique compositions and properties at high pressures

报告人:Alexander Goncharov(Geophysical Laboratory, Carnegie Institution of Washington, Washington, DC 20015, USA)

报告时间:2019年9月30日(星期一)上午9:30

报告地点:前卫南区唐敖庆楼C区603报告厅

报告摘要:A major focus of the field of Chemistry is the prediction as to how various atoms form bonds, and how such bonding controls the structure and properties of matter. The majority of matter in the Universe resides at extreme pressures and temperatures (P-T) that force atoms into extremely close contact, where very exotic compounds can become stable. Theoretical first principles calculations and laboratory experiments at extreme P-T conditions address this problem. I will present experiments at extreme pressures up to 280 GPa that include recent discoveries of unusual “salts” (KCl3 and XeFe3), stable compounds with noble gasses (Na2He), polyhydrides of Na, U, and S, and N-H polymers among others. These exotic materials hold a promise of potentially unparalleled physical and chemical properties such as high-temperature superconductivity, super-hardness, energy storage capacity, and others. Many of these newly discovered extreme materials are likely to be present in the interiors of the planets.



举办单位:吉林大学物理学院

     计算物理方法与软件创新中心

     超硬材料国家重点实验室

     吉林省物理学会

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