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.

在该奖项中，由化学结构，动力学和机制计划资助，威斯康星大学的马克·埃德格（Mark Ediger）和斯蒂芬·瓦伦（Stephen Swallen）博士 - 麦迪逊大学 - 麦迪逊及其研究生研究专业的学生将探索通过物理蒸发量制备的超冷液相的动力学。这些阶段中最近发现异常分子迁移率的发现引发了许多问题，这些问题涉及玻璃材料行为的核心。该研究将涉及许多高级工具，包括二级离子质谱法（SIMS），探针分子光漂白，并与亚利桑那州立大学的Ranko Richert教授合作，介电光谱测量值。 研究人员将通过观察它们转化为普通液体的方式来探测这些异常流动的液体的性质。物质的玻璃状态本质上是无处不在的，并且还具有许多有用的技术应用，从制造更好的结构材料到有机电子学的开发和制药的改进配方。除了得到支持的研究的更广泛的技术影响外，Ediger教授和他的学生同事将继续参与威斯康星大学 - 麦迪逊人的人民计划，为夏季提供教育丰富的高中大二学生的教育丰富。