【基礎論壇】第173期 劉冰冰


主講人:劉冰冰

主題:Novel Structured Carbon Materials under High Pressure

時間:2019413日星期六,下午16:00

地點:沙河校區通信樓818

個人簡介:劉冰冰,吉林大學教授。1989年獲吉林大學物理系學士學位;1995年在吉林大學超硬材料國家重點實驗室獲博士學位并留校工作,期間赴瑞典于默奧大學進行了兩年博士后研究,現任吉林大學超硬材料國家重點實驗室主任。長期從事高壓物理和納米材料的基礎研究,在高壓新結構、新性質以及高壓新材料研究方面取得了系列結果。在Science、PNAS、PRL、Adv Mater 等刊物上發表SCI論文200 余篇。教育部長江學者、國家杰出青年基金獲得者、中組部“萬人計劃”人選、中國青年女科學家獎獲得者。

報告摘要: Design and synthesis of new carbon materials have been attracting intensive attention due to their application in various fields. The study of carbon nano materials under high pressure provides us a very effective method to the creation of new carbon materials, especially superhard material which is hardly discovered at ambient condition because of the appearance of nanometer scale size effect and the novel high pressure behavior. Deeply understanding those unusual high pressure structures and physical phenomena also unveils new aspects of the intrinsic physics of nanomaterials. Fullerene, for example C60 is an important member and a representative zero-dimensional nano material in carbon family which has twice as much bulk modulus as diamond. It provides us an ideal carbon source to study novel phase and design new carbon materials induced by high pressure. In this presentation, several examples on high pressure induced novel structural phase transition in recently studied typical nano-confined fullerene will be outlined, including unique long range ordered crystal with amorphous nano clusters as building blocks (OACC)  in solvated C60 and C70 crystals which brings new physical insight to understand order and disorder concept and new approach to design superhard carbon materials, a new carbon allotrope with a fully sp3 bonded monoclinic structure (termed V carbon) from compressed C70 inside of single wall nanotubes (C70 peapod). These findings present a new strategy for constructing new carbon material with application of high pressure and nano-carbon material as building blocks.


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