Microscale Origins of Wetting in Complex Systems

9411900在许多自然和技术环境中，液体对表面的润湿会发生。尽管湿润现象很常见，但在工艺过程中，人们既不能完全理解它，也不能完全控制它。悬而未决的科学问题源于对所涉及的界面的详细物理和化学的敏感性。使用光学、X射线和中子技术，首席调查员将在宏观和微观尺度上调查润湿现象。该提案试图了解接触线及其附近界面所限制的流体微观结构中复杂的宏观润湿行为的起源。液体对表面的润湿发生在许多自然和技术环境中，例如回收液体化石燃料、薄膜涂层和先进复合材料的加工。尽管湿润现象很常见，但在工艺过程中，人们既不能完全理解它，也不能完全控制它。该计划将使用各种实验技术来研究润湿过程的微观起源，包括在国家设施中进行的中子和X射线散射。拟议的研究结果将增加工程先进材料和其他以润湿为主的工艺所需的科学基础。***

9411900 Garoff Wetting of a surface by a fluid arises in many natural and technical settings. Despite its common occurrence, wetting is neither completely understood nor entirely controllable in technical processes. The open scientific questions arise from the sensitivity to the detailed physics and chemistry of the interfaces involved. Using optical, x-ray, and neutron techniques, the Principal Investigators will investigate wetting phenomena on both the macroscopic and microscopic scales. The proposal seeks to understand the origins of the complex, macroscopic wetting behavior within the microscopic structures of fluids confined by the interfaces at and near the contact line. % % % % Wetting of a surface by a fluid arises in many natural and technological settings such as recovery of fluid fossil fuels, film coating, and the processing of advanced composite materials. Despite its common occurrence, wetting is neither completely understood nor entirely controllable in technical processes. The program will study the microscopic origins of wetting processes using a variety of experimental techniques, including neutron and x-rays scattering performed at national facilities. Results of the proposed research will add to the scientific basis needed for engineering advanced materials and for other technological processes dominated by wetting. ***