A Study of Supercooled Liquids and Low Temperature Polyamorphism

过冷液体与低温多晶现象的研究

• 批准号: 9629913
• 负责人: Daniel Kivelson
• 金额: $ 40.4万
• 依托单位: University of California-Los Angeles
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-07-01 至 1999-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9629913&HistoricalAwards=false
• 关键词: Study; Supercooled; Liquids; Low; Temperature

Daniel Kivelson of the Chemistry Department of the University of California at Los Angeles is supported by a grant from the Theoretical and Computational Chemistry Program to continue his studies of supercooled liquids and low temperature polyamorphism. He plans a theoretical and experimental study of supercooled liquids, the glass transition, and a newly identified first order phase change (called glaciation) from a supercooled liquid to a rigid amorphous phase. Kivelson will employ a newly developed thermodynamic (nonmolecular) theory of an avoided critical point, the avoidance being associated with geometric frustration. The project will involve theoretical modeling of supercooled liquids and experimental investigations of the related, apparently amorphous rigid phases. Glasses are non-crystalline states of matter which have unique materials properties of significant commercial importance. Glassy states exist in many chemical systems including polymeric materials and biological systems such as DNA and RNA. Kivelson's research employs both theoretical and experimental approaches to the study of glassy materials in an attempt to obtain a molecular level understanding of the physical properties which are unique to this class of materials.

密歇根大学化学系的丹尼尔·基弗森说， 洛杉矶的加州由理论研究所的资助。 和计算化学计划，继续他的研究， 过冷液体和低温多晶现象。 他计划 过冷液体玻璃的理论和实验研究 过渡，和一个新确定的一阶相变（称为 冰川作用）从过冷液体到刚性无定形相。 Kivelson将采用新开发的热力学（非分子） 避免临界点理论，避免与 几何挫折 该项目将涉及理论建模， 过冷液体和相关的实验研究， 明显无定形的刚性相。 玻璃是物质的非晶体状态，具有独特的材料 具有重要商业价值的资产。 玻璃态存在于 许多化学系统包括聚合物材料和生物 例如DNA和RNA。 Kivelson的研究同时使用了 玻璃材料研究的理论和实验方法 试图从分子水平上理解 这是这类材料所独有的特性。