High Pressure Synthesis of Covalently-Bonded Networks

小行星9705551 该项目探索在压力下合成新型共价键合网络。 该实验利用金刚石砧室技术，以实现在20至100吉帕斯卡的极端压力下合成，并在4至3000开尔文的温度下，结合原位和非原位测量由共价结合网络组成的新材料的形成和性能，包括氮化碳和石墨的新型碳相。 现有的拉曼系统将适用于在光谱的紫外区操作，并用作表征的原位技术。 碳在科学和技术中起着核心作用，正如目前对富勒烯和纳米管材料的强调所展示的那样。 合成其他碳基共价网络的高压和高温路线将提供具有壮观的光学，机械和电子特性的其他新类型的化合物。 ***

9705551 Badding This project explores the synthesis under pressure of novel covalently bonded networks. The experiments utilize diamond anvil cell techniques, to achieve synthesis at extreme pressures of 20 to 100 gigapascals, and at temperatures from 4 to 3000 Kelvin, combined with in-situ and ex-situ measurements of the formation and properties of new materials consisting of covalently binded networks to include carbon nitrides and novel carbon phases of graphite. An existing Raman system will be adapted for operation in the ultraviolet region of the spectrum and used as an in-situ technique for characterization. %%% Carbon plays a central role in science and technology as exhibited by the present emphasis upon the class of materials variously referred to as fullerenes and nanotubes. High-pressure and temperature routes to the synthesis of other carbon based covalent networks will provide additional new classes of compounds with spectacular optical, mechanical, and electronic properties. ***