High pressure chemistry of solids and liquids

我们将探索在高压和高温的极端条件下发生的新的固态化学反应，将大体积装置中的高压合成与金刚石对顶砧单元中的原位研究相结合。我们的研究重点是发展以C、O、N、H、B等为基础的新的轻元素、化合物的固态化学，这些通常提供分子气体、液体和有机化合物，但它们也产生超硬固体，如金刚石和立方氮化硼。我们还将探索在高压条件下制备新材料的亚稳态热力学途径，结合化学前体路线以产生不寻常的新化合物和材料，以及亚稳态压缩/减压策略以调整所得材料的性能。我们将研究高压下液体和玻璃的物理化学，探索密度驱动相变和多晶现象的新现象，据报道，这些现象发生在化学成分恒定的液体和玻璃中。这是液体物理科学中一个需要探索和发展的新领域。

We will explore new solid state chemistries occurring under extreme conditions of high pressure and high temperature, combining high-pressure synthesis in large-volume devices with in situ studies in the diamond anvil cell. We will focus our studies on developing the solid state chemistry of new light element , compounds, based on C, O, N, H, B etc. , These usually provide molecular gases, liquids and organic compounds, but they also give rise to superhard solids like diamond and cubic boron nitride. We will also explore metastable thermodynamic pathways to new materials prepared under high-pressure conditions, combining chemical precursor routes to yield unusual new compounds and materials, and metastable compression/decompression strategies to tune the properties of the resulting materials. We will study the physical chemistry of liquids and glasses at high pressure, to explore the new phenomena of density-driven phase transitions and polyamorphism that are reported to occur in liquids and glasses at constant chemical composition. This is a new area in the physical science of liquids that needs to be explored and developed.