Dynamic Processes in Complex Thin Fluid Films Between Solid Surfaces (Expedited Award)

这项研究涉及一种新的 直接测量动态摩擦学性能的实验技术 两固体间复杂流体膜的相互作用 表面。 该计划的核心是地面部队设备， 测量液体中具有一定距离的表面之间的力 分辨率（表面之间）为1埃。 这种技术将 使快速分子弛豫过程能够首次被研究， 时间 该方法包括例如，各种粘弹性， 在非常薄的流体膜中， 表面相互作用对这些性质的影响。 流体以 将研究的聚合物表面活性剂类型，润滑剂，和 这些的混合物。

This research is concerned with the exploratory development of a new experimental technique for directly measuring the dynamic tribologic interactions in complex fluid films confined between two solid surfaces. Central to the program is the Surface Forces Apparatus for measuring the forces between surfaces in liquids with a distance resolution (between the surfaces) of one Angstrom. This technique will enable fast molecular relaxation processes to be studied for the first time. This process involves for example, various viscoelastic, hysteric, and interfacial shear properties in very thin fluid films and the effect of surface interactions on these properties. The fluids to be studied will be of the polymer-surfactant type, lubricants, and mixtures of these.