A Study of Supercooled Liquids and Low Temperature Polyamorphism

加州大学洛杉矶分校化学系的Daniel Kivelson得到了理论与计算化学项目的资助，继续他对过冷液体和低温多晶体的研究。他计划对过冷液体、玻璃化转变和新发现的一阶相变（称为冰化）进行理论和实验研究，从过冷液体到刚性非晶相。Kivelson将采用一种新开发的热力学（非分子）理论来避免临界点，这种避免与几何挫折有关。该项目将涉及过冷液体的理论建模和相关的实验研究，显然是无定形的刚性相。玻璃是物质的非结晶状态，具有独特的材料性质，具有重要的商业意义。玻璃态存在于许多化学系统中，包括高分子材料和生物系统，如DNA和RNA。Kivelson的研究采用理论和实验两种方法来研究玻璃材料，试图从分子水平上了解这类材料独特的物理特性。

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.