Dynamics of Vapor-deposited Glasses and Liquids

气相沉积玻璃和液体的动力学

• 批准号: 1265737
• 负责人: Mark Ediger
• 金额: $ 48万
• 依托单位: University of Wisconsin-Madison
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-09-15 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1265737&HistoricalAwards=false
• 关键词: Dynamics; Vapor; deposited; Glasses; Liquids

In this award, funded by the Chemical Structure, Dynamics and Mechanisms Program of the Chemistry Division, Prof. Mark Ediger of the University of Wisconsin - Madison and his graduate research students will explore the dynamics of vapor-deposited glasses and liquids. The recent discovery that highly stable glasses can be prepared by physical vapor deposition has prompted many questions about the mechanism by which these materials are prepared and what their ultimate properties might be. The research will involve advanced characterization tools including nanocalorimetry and, in collaboration with Professor Ranko Richert of Arizona State University, dielectric spectroscopy measurements. The researchers will directly probe mobility at the surface of glasses and use this to understand how stable glasses are formed. They will investigate the extent to which surface mobility can be eliminated by coatings. The researchers will attempt to use dielectric relaxation to quantify the very small amounts of mobility in highly stable glasses.The glassy state of matter is ubiquitous in nature, and also has a number of useful technological applications, from the fabrication of better structural materials to the development of organic electronics and improved formulations for pharmaceuticals. Besides the broader technological impacts of the research being supported, Prof. Ediger and his student colleagues will continue their involvement in the University of Wisconsin - Madison's PEOPLE Program, providing educational enrichment in the summer for high school juniors from groups under-represented in the sciences.

该奖项由化学系化学结构、动力学和机制项目资助，威斯康星州-麦迪逊大学的Mark Ediger教授和他的研究生将探索气相沉积玻璃和液体的动力学。最近的发现，高稳定的玻璃可以通过物理气相沉积制备，引发了许多问题的机制，这些材料的制备和它们的最终性能可能是什么。这项研究将涉及先进的表征工具，包括纳米量热法，并与亚利桑那州立大学的Ranko里切特教授合作，进行介电光谱测量。研究人员将直接探测玻璃表面的流动性，并利用它来了解玻璃是如何形成的。 他们将研究涂层可以消除表面流动性的程度。 研究人员将尝试使用介电弛豫来量化高度稳定的玻璃中非常少量的迁移率。物质的玻璃态在自然界中无处不在，也有许多有用的技术应用，从制造更好的结构材料到开发有机电子产品和改进药物配方。Ediger教授和他的学生同事将继续参与威斯康星州-麦迪逊大学的人计划，在夏季为来自科学代表性不足的群体的高中三年级学生提供教育丰富。