Nonlinear-Optical Spectroscopy and Microscopy of Confined Liquids

受限液体的非线性光学光谱学和显微镜学

• 批准号: 0314020
• 负责人: John Fourkas
• 金额: $ 39.18万
• 依托单位: Boston College
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-07-15 至 2005-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0314020&HistoricalAwards=false
• 关键词: Nonlinear; Optical; Spectroscopy; Microscopy; Confined

In this project, funded by the Experimental Physical Chemistry Program of the Chemistry Division, Fourkas will investigate nanoporous sol-gel glasses to study the confinement effects on a distance scale that is within approximately the order of a molecular dimension. At such distances there can be significant effects on the structure and dynamics of liquids. The materials are highly porous, of optical quality, and the average pore size and chemical nature of the pore surfaces can be controlled readily. The experiments are based on the use of ultrafast optical Kerr effect (OKE) techniques. The role of molecular shapes on the dynamics of weakly wetting liquids at solid/liquid interfaces will be investigated as function of temperature and pore size.There are several ways in which this research will make an impact. Confined liquids are found throughout nature and are also important in many areas of technology. The knowledge gained from this work will be of importance to many areas of science and technology, such as, for example, how water behaves in biological contexts, while the work on the confined alkanes will have direct bearing on lubrication and oil recovery. The university and high school students, as well as high school teachers who will participate in this project will be involved in a multidisciplinary undertaking that broadens their outlook and understanding of how contemporary science is practiced.

在该项目中，由化学划分的实验物理化学计划资助，Fourkas将研究纳米孔溶胶玻璃玻璃，以在距离尺度上研究限制效果，该距离大约在分子维度的顺序之内。 在这样的距离上，可能对液体的结构和动力学产生重大影响。 这些材料是高度多孔的，具有光学质量，并且可以轻松控制孔隙表面的平均孔径和化学性质。 实验基于使用超快光学KERR效应（OKE）技术。 分子形状在固体/液体界面处弱润湿液体动力学方面的作用将作为温度和孔径的函数进行研究。这项研究会产生影响。 在大自然中发现了狭窄的液体，并且在许多技术领域也很重要。 从这项工作中获得的知识对于许多科学技术领域都非常重要，例如，在生物学环境中，水的行为方式，而在受限的烷烃上的工作将直接与润滑和石油回收有关。 大学和高中生以及将参加该项目的高中老师将参与一项多学科的事业，从而扩大了他们对当代科学的实践方式的了解和理解。