Unusually mobile supercooled liquids

异常流动的过冷液体

• 批准号: 1012124
• 负责人: Mark Ediger
• 金额: $ 48.03万
• 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: 2010
• 资助国家: 美国
• 起止时间: 2010-09-01 至 2013-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1012124&HistoricalAwards=false
• 关键词: Unusually; mobile; supercooled; liquids

In this award, funded by the Chemical Structure, Dynamics and Mechanisms Program of the Chemistry Division, Prof. Mark Ediger and Dr. Stephen Swallen of the University of Wisconsin - Madison and their graduate research students will explore the dynamics of supercooled liquid phases prepared via physical vapor deposition. The recent discovery of unusual molecular mobility within these phases has prompted many questions that reach to the heart of glassy material behavior. The research will involve a number of advanced tools, including secondary ion mass spectrometry (SIMS), probe molecule photobleaching and, in collaboration with Professor Ranko Richert of Arizona State University, dielectric spectroscopy measurements. The researchers will probe the nature of these unusually mobile liquids by observing the manner in which they transform into the ordinary liquid.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 sophomores 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Stephen Swallen博士及其研究生将探索通过物理气相沉积制备的过冷液相的动力学。最近发现的不寻常的分子在这些阶段的流动性，引发了许多问题，达到玻璃材料行为的核心。这项研究将涉及一些先进的工具，包括二次离子质谱（西姆斯），探针分子光漂白，并与亚利桑那州州立大学的Ranko里切特教授合作，进行介电光谱测量。 研究人员将通过观察这些异常移动的液体转变为普通液体的方式来探索它们的性质。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毕业生提供教育丰富。