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物理大講堂—名家系列講座(十九)

時間:2019-09-12    點擊:

報告題目:Synthesis of novel compounds with unique compositions and properties at high pressures

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

報告時間:2019年9月30日(星期一)上午9:30

報告地點:前衛南區唐敖慶樓C區603報告廳

報告摘要: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.



舉辦單位:吉林大學物理學院

     計算物理方法與軟件創新中心

     超硬材料國家重點實驗室

     吉林省物理學會

上一條:物理大講堂—青年學者論壇(50) 下一條:物理大講堂—名家系列講座(十八)

地址:吉林省長春市前進大街2699號 郵編:130012 版權所有:吉林大學物理學院 ? 2017 電話:0431-85166112 郵箱:wlxy@jlu.edu.cn
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