X-Ray Scattering Studies of Thin Liquid Films

w：\awards\awards96\*.doc 9624055 Dutta 的 项目 利用同步辐射 研究 非常薄的液体膜中的分子间关联。这是一个相对容易控制和几何定义良好的类 的 “禁闭的” 液体，其 性能 可以 与散装液体的那些显著不同。待研究的系统包括浓缩金属盐溶液的薄膜、粘性液体的铺展膜和固体基底上的润湿膜。 膜平面内和垂直于膜平面的结构被探测为膜厚度、温度、溶质浓度和施加电势的函数。调查是根本的利益，是相关的应用程序，不仅涉及润滑，润湿和传播，而且对其他有限的系统，如液滴，多孔矿物，毛细管和生物细胞的液体。 %%% 本课题研究的是 分子在非常薄的液体膜中的运动。同步辐射用于测量结构，因为它可以与散装液体完全不同。当液体呈非常薄的薄膜或其他“受限”的几何形状时，其性质就会发生变化。 调查不仅是基本的兴趣，但相关的润湿和蔓延过程（如发生在油漆或石油泄漏）， 和相关的工业过程。 所获得的信息很可能有助于更好地了解其他封闭系统的特性，如云中的液滴、油滴、水滴、水滴 在多孔岩石中，以及生物细胞和毛细血管中的液体。 ***

w:\awards\awards96\*.doc 9624055 Dutta The project employs synchrotron radiation to study the intermolecular correlations within very thin liquid films. These are a relatively easily controlled and geometrically well defined class of `confined' liquids, whose properties can be significantly different from those of bulk liquids. Systems to be studied include thin films of concentrated metal salt solutions, spreading films of viscous liquids, and wetting films on solid substrates. The structures within and normal to the film plane are to be probed as functions of film thickness, temperature, solute concentration, and applied potential. The investigations are of fundamental interest and are relevant to applications involving not only lubrication, wetting, and spreading, but also to other confined systems such as liquids in droplets, porous minerals, capillaries, and biological cells. %%% This project investigates the structural arrangement of molecules within very thin liquid films. Synchrotron radiation is used to measure the structure as it can be quite different from bulk liquids. The properties of liquids change when they are in the form of very thin films or in other `confined' geometries. The investigation is not only of basic interest but is related wetting and spreading processes (such as occur in painting or oil spills), and related industrial processes. The information obtained is likely to lead to a better understanding of the properties of other confined systems such as droplets in a cloud, oil in porous rocks, and fluids in biological cells and capillaries. ***